diff --git a/ChangeLog b/ChangeLog
index 02c3bb2..a461008 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -63,6 +63,8 @@
    * Fix multiple X.509 functions previously returning ASN.1 low-level error
      codes to always wrap these codes into X.509 high level error codes before
      returning. Fixes #2431.
+   * Fix to allow building test suites with any warning that detects unused
+     functions. Fixes #1628.
    * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
    * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
    * Fix build failure when building with mingw on Windows by including
@@ -98,6 +100,8 @@
    * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
      improve clarity. Fixes #2258.
    * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
+   * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
+     suggests). #2671
    * Make `make clean` clean all programs always. Fixes #1862.
 
 = mbed TLS 2.17.0 branch released 2019-03-19
diff --git a/crypto b/crypto
index 47f2de1..86268e1 160000
--- a/crypto
+++ b/crypto
@@ -1 +1 @@
-Subproject commit 47f2de132936905d97a93e2ddf7f5237ab232fbe
+Subproject commit 86268e1d302355ad8fd8e5ca5f1a7c7af8640678
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index f2e9ed0..529c07f 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -277,28 +277,52 @@
  * For example, when a function accepts as input a pointer to a buffer that may
  * contain untrusted data, and its documentation mentions that this pointer
  * must not be NULL:
- * - the pointer is checked to be non-NULL only if this option is enabled
- * - the content of the buffer is always validated
+ * - The pointer is checked to be non-NULL only if this option is enabled.
+ * - The content of the buffer is always validated.
  *
  * When this flag is defined, if a library function receives a parameter that
- * is invalid, it will:
- * - invoke the macro MBEDTLS_PARAM_FAILED() which by default expands to a
- *   call to the function mbedtls_param_failed()
- * - immediately return (with a specific error code unless the function
- *   returns void and can't communicate an error).
+ * is invalid:
+ * 1. The function will invoke the macro MBEDTLS_PARAM_FAILED().
+ * 2. If MBEDTLS_PARAM_FAILED() did not terminate the program, the function
+ *   will immediately return. If the function returns an Mbed TLS error code,
+ *   the error code in this case is MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
  *
- * When defining this flag, you also need to:
- * - either provide a definition of the function mbedtls_param_failed() in
- *   your application (see platform_util.h for its prototype) as the library
- *   calls that function, but does not provide a default definition for it,
- * - or provide a different definition of the macro MBEDTLS_PARAM_FAILED()
- *   below if the above mechanism is not flexible enough to suit your needs.
- *   See the documentation of this macro later in this file.
+ * When defining this flag, you also need to arrange a definition for
+ * MBEDTLS_PARAM_FAILED(). You can do this by any of the following methods:
+ * - By default, the library defines MBEDTLS_PARAM_FAILED() to call a
+ *   function mbedtls_param_failed(), but the library does not define this
+ *   function. If you do not make any other arrangements, you must provide
+ *   the function mbedtls_param_failed() in your application.
+ *   See `platform_util.h` for its prototype.
+ * - If you enable the macro #MBEDTLS_CHECK_PARAMS_ASSERT, then the
+ *   library defines #MBEDTLS_PARAM_FAILED(\c cond) to be `assert(cond)`.
+ *   You can still supply an alternative definition of
+ *   MBEDTLS_PARAM_FAILED(), which may call `assert`.
+ * - If you define a macro MBEDTLS_PARAM_FAILED() before including `config.h`
+ *   or you uncomment the definition of MBEDTLS_PARAM_FAILED() in `config.h`,
+ *   the library will call the macro that you defined and will not supply
+ *   its own version. Note that if MBEDTLS_PARAM_FAILED() calls `assert`,
+ *   you need to enable #MBEDTLS_CHECK_PARAMS_ASSERT so that library source
+ *   files include `<assert.h>`.
  *
  * Uncomment to enable validation of application-controlled parameters.
  */
 //#define MBEDTLS_CHECK_PARAMS
 
+/**
+ * \def MBEDTLS_CHECK_PARAMS_ASSERT
+ *
+ * Allow MBEDTLS_PARAM_FAILED() to call `assert`, and make it default to
+ * `assert`. This macro is only used if #MBEDTLS_CHECK_PARAMS is defined.
+ *
+ * If this macro is not defined, then MBEDTLS_PARAM_FAILED() defaults to
+ * calling a function mbedtls_param_failed(). See the documentation of
+ * #MBEDTLS_CHECK_PARAMS for details.
+ *
+ * Uncomment to allow MBEDTLS_PARAM_FAILED() to call `assert`.
+ */
+//#define MBEDTLS_CHECK_PARAMS_ASSERT
+
 /* \} name SECTION: System support */
 
 /**
@@ -3256,13 +3280,16 @@
 
 /**
  * \brief       This macro is invoked by the library when an invalid parameter
- *              is detected that is only checked with MBEDTLS_CHECK_PARAMS
+ *              is detected that is only checked with #MBEDTLS_CHECK_PARAMS
  *              (see the documentation of that option for context).
  *
- *              When you leave this undefined here, a default definition is
- *              provided that invokes the function mbedtls_param_failed(),
- *              which is declared in platform_util.h for the benefit of the
- *              library, but that you need to define in your application.
+ *              When you leave this undefined here, the library provides
+ *              a default definition. If the macro #MBEDTLS_CHECK_PARAMS_ASSERT
+ *              is defined, the default definition is `assert(cond)`,
+ *              otherwise the default definition calls a function
+ *              mbedtls_param_failed(). This function is declared in
+ *              `platform_util.h` for the benefit of the library, but
+ *              you need to define in your application.
  *
  *              When you define this here, this replaces the default
  *              definition in platform_util.h (which no longer declares the
@@ -3271,6 +3298,9 @@
  *              particular, that all the necessary declarations are visible
  *              from within the library - you can ensure that by providing
  *              them in this file next to the macro definition).
+ *              If you define this macro to call `assert`, also define
+ *              #MBEDTLS_CHECK_PARAMS_ASSERT so that library source files
+ *              include `<assert.h>`.
  *
  *              Note that you may define this macro to expand to nothing, in
  *              which case you don't have to worry about declarations or
diff --git a/include/mbedtls/platform_util.h b/include/mbedtls/platform_util.h
index dba6d45..09d0965 100644
--- a/include/mbedtls/platform_util.h
+++ b/include/mbedtls/platform_util.h
@@ -43,6 +43,12 @@
 
 #if defined(MBEDTLS_CHECK_PARAMS)
 
+#if defined(MBEDTLS_CHECK_PARAMS_ASSERT)
+/* Allow the user to define MBEDTLS_PARAM_FAILED to something like assert
+ * (which is what our config.h suggests). */
+#include <assert.h>
+#endif /* MBEDTLS_CHECK_PARAMS_ASSERT */
+
 #if defined(MBEDTLS_PARAM_FAILED)
 /** An alternative definition of MBEDTLS_PARAM_FAILED has been set in config.h.
  *
@@ -50,6 +56,11 @@
  * MBEDTLS_PARAM_FAILED() will expand to a call to mbedtls_param_failed().
  */
 #define MBEDTLS_PARAM_FAILED_ALT
+
+#elif defined(MBEDTLS_CHECK_PARAMS_ASSERT)
+#define MBEDTLS_PARAM_FAILED( cond ) assert( cond )
+#define MBEDTLS_PARAM_FAILED_ALT
+
 #else /* MBEDTLS_PARAM_FAILED */
 #define MBEDTLS_PARAM_FAILED( cond ) \
     mbedtls_param_failed( #cond, __FILE__, __LINE__ )
diff --git a/library/version_features.c b/library/version_features.c
index 5a5f9d6..58acb5c 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -31,7 +31,7 @@
 
 #include <string.h>
 
-static const char *features[] = {
+static const char * const features[] = {
 #if defined(MBEDTLS_VERSION_FEATURES)
 #if defined(MBEDTLS_HAVE_ASM)
     "MBEDTLS_HAVE_ASM",
@@ -90,6 +90,9 @@
 #if defined(MBEDTLS_CHECK_PARAMS)
     "MBEDTLS_CHECK_PARAMS",
 #endif /* MBEDTLS_CHECK_PARAMS */
+#if defined(MBEDTLS_CHECK_PARAMS_ASSERT)
+    "MBEDTLS_CHECK_PARAMS_ASSERT",
+#endif /* MBEDTLS_CHECK_PARAMS_ASSERT */
 #if defined(MBEDTLS_TIMING_ALT)
     "MBEDTLS_TIMING_ALT",
 #endif /* MBEDTLS_TIMING_ALT */
@@ -792,7 +795,7 @@
 
 int mbedtls_version_check_feature( const char *feature )
 {
-    const char **idx = features;
+    const char * const *idx = features;
 
     if( *idx == NULL )
         return( -2 );
diff --git a/programs/Makefile b/programs/Makefile
index a914407..2cb7366 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -19,9 +19,9 @@
 LOCAL_CXXFLAGS += -I../crypto/include
 
 ifndef SHARED
-DEP=../library/libmbedcrypto.a ../library/libmbedx509.a ../library/libmbedtls.a
+DEP=../crypto/library/libmbedcrypto.a ../library/libmbedx509.a ../library/libmbedtls.a
 else
-DEP=../library/libmbedcrypto.$(DLEXT) ../library/libmbedx509.$(DLEXT) ../library/libmbedtls.$(DLEXT)
+DEP=../crypto/library/libmbedcrypto.$(DLEXT) ../library/libmbedx509.$(DLEXT) ../library/libmbedtls.$(DLEXT)
 endif
 
 ifdef DEBUG
diff --git a/programs/aes/aescrypt2.c b/programs/aes/aescrypt2.c
index bdeac3a..8242ea7 100644
--- a/programs/aes/aescrypt2.c
+++ b/programs/aes/aescrypt2.c
@@ -80,17 +80,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index f58e616..a5acf5b 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -82,17 +82,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/hash/generic_sum.c b/programs/hash/generic_sum.c
index 4b7fe37..709a149 100644
--- a/programs/hash/generic_sum.c
+++ b/programs/hash/generic_sum.c
@@ -52,17 +52,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static int generic_wrapper( const mbedtls_md_info_t *md_info, char *filename, unsigned char *sum )
 {
diff --git a/programs/hash/hello.c b/programs/hash/hello.c
index 6046f86..55a0c7e 100644
--- a/programs/hash/hello.c
+++ b/programs/hash/hello.c
@@ -48,17 +48,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index 1dce31a..86b260c 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -72,17 +72,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index cca43ca..bf5482e 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -69,17 +69,6 @@
  */
 #define GENERATOR "4"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char **argv )
 {
diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c
index a797e60..c011774 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -72,17 +72,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/pkey/ecdh_curve25519.c b/programs/pkey/ecdh_curve25519.c
index 9267c7e..9f849dd 100644
--- a/programs/pkey/ecdh_curve25519.c
+++ b/programs/pkey/ecdh_curve25519.c
@@ -53,17 +53,6 @@
 #include "mbedtls/ctr_drbg.h"
 #include "mbedtls/ecdh.h"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/ecdsa.c b/programs/pkey/ecdsa.c
index 4471a20..b851c31 100644
--- a/programs/pkey/ecdsa.c
+++ b/programs/pkey/ecdsa.c
@@ -100,17 +100,6 @@
 #define dump_pubkey( a, b )
 #endif
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 35fc149..23e4e14 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -137,17 +137,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index 0bd61e4..7939309 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -64,7 +64,6 @@
     "    password_file=%%s    default: \"\"\n"          \
     "\n"
 
-
 #if !defined(MBEDTLS_BIGNUM_C) ||                                  \
     !defined(MBEDTLS_PK_PARSE_C) || !defined(MBEDTLS_FS_IO)
 int main( void )
@@ -75,17 +74,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index b81530c..6096429 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -98,17 +98,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/pkey/mpi_demo.c b/programs/pkey/mpi_demo.c
index 80573c0..ecdcd32 100644
--- a/programs/pkey/mpi_demo.c
+++ b/programs/pkey/mpi_demo.c
@@ -50,17 +50,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/pkey/pk_decrypt.c b/programs/pkey/pk_decrypt.c
index 978f39e..bf42507 100644
--- a/programs/pkey/pk_decrypt.c
+++ b/programs/pkey/pk_decrypt.c
@@ -48,7 +48,6 @@
 #include <string.h>
 #endif
 
-
 #if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_PK_PARSE_C) ||  \
     !defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_ENTROPY_C) || \
     !defined(MBEDTLS_CTR_DRBG_C)
@@ -61,17 +60,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/pk_encrypt.c b/programs/pkey/pk_encrypt.c
index 806c59a..a32b147 100644
--- a/programs/pkey/pk_encrypt.c
+++ b/programs/pkey/pk_encrypt.c
@@ -61,17 +61,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/pk_sign.c b/programs/pkey/pk_sign.c
index 7354082..47a098a 100644
--- a/programs/pkey/pk_sign.c
+++ b/programs/pkey/pk_sign.c
@@ -60,17 +60,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/pk_verify.c b/programs/pkey/pk_verify.c
index 9fcf029..a6bfe3f 100644
--- a/programs/pkey/pk_verify.c
+++ b/programs/pkey/pk_verify.c
@@ -56,17 +56,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
@@ -112,7 +101,6 @@
         goto exit;
     }
 
-
     i = fread( buf, 1, sizeof(buf), f );
 
     fclose( f );
diff --git a/programs/pkey/rsa_decrypt.c b/programs/pkey/rsa_decrypt.c
index dc8a920..ff71bd0 100644
--- a/programs/pkey/rsa_decrypt.c
+++ b/programs/pkey/rsa_decrypt.c
@@ -59,17 +59,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_encrypt.c b/programs/pkey/rsa_encrypt.c
index e9effe8..4a71c15 100644
--- a/programs/pkey/rsa_encrypt.c
+++ b/programs/pkey/rsa_encrypt.c
@@ -59,17 +59,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_genkey.c b/programs/pkey/rsa_genkey.c
index 81867ee..d556c19 100644
--- a/programs/pkey/rsa_genkey.c
+++ b/programs/pkey/rsa_genkey.c
@@ -64,17 +64,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/pkey/rsa_sign.c b/programs/pkey/rsa_sign.c
index f014872..9bcd7a6 100644
--- a/programs/pkey/rsa_sign.c
+++ b/programs/pkey/rsa_sign.c
@@ -56,17 +56,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_sign_pss.c b/programs/pkey/rsa_sign_pss.c
index 5131745..42209e2 100644
--- a/programs/pkey/rsa_sign_pss.c
+++ b/programs/pkey/rsa_sign_pss.c
@@ -60,17 +60,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_verify.c b/programs/pkey/rsa_verify.c
index 5d1c085..94f0ef9 100644
--- a/programs/pkey/rsa_verify.c
+++ b/programs/pkey/rsa_verify.c
@@ -55,17 +55,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_verify_pss.c b/programs/pkey/rsa_verify_pss.c
index 34122ca..148cd51 100644
--- a/programs/pkey/rsa_verify_pss.c
+++ b/programs/pkey/rsa_verify_pss.c
@@ -60,17 +60,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
@@ -125,7 +114,6 @@
         goto exit;
     }
 
-
     i = fread( buf, 1, MBEDTLS_MPI_MAX_SIZE, f );
 
     fclose( f );
diff --git a/programs/random/gen_entropy.c b/programs/random/gen_entropy.c
index 3b350ed..6ae63b7 100644
--- a/programs/random/gen_entropy.c
+++ b/programs/random/gen_entropy.c
@@ -51,17 +51,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/random/gen_random_ctr_drbg.c b/programs/random/gen_random_ctr_drbg.c
index a50402f..59df34b 100644
--- a/programs/random/gen_random_ctr_drbg.c
+++ b/programs/random/gen_random_ctr_drbg.c
@@ -54,17 +54,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/random/gen_random_havege.c b/programs/random/gen_random_havege.c
index ef888ff..5ea52ae 100644
--- a/programs/random/gen_random_havege.c
+++ b/programs/random/gen_random_havege.c
@@ -52,17 +52,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 90db06c..3ea2a68 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -82,17 +82,6 @@
 
 #define DEBUG_LEVEL 0
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static void my_debug( void *ctx, int level,
                       const char *file, int line,
diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
index dd21fbf..bb32724 100644
--- a/programs/ssl/dtls_server.c
+++ b/programs/ssl/dtls_server.c
@@ -91,17 +91,6 @@
 #define READ_TIMEOUT_MS 10000   /* 5 seconds */
 #define DEBUG_LEVEL 0
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static void my_debug( void *ctx, int level,
                       const char *file, int line,
diff --git a/programs/ssl/mini_client.c b/programs/ssl/mini_client.c
index ff36128..4b8140e 100644
--- a/programs/ssl/mini_client.c
+++ b/programs/ssl/mini_client.c
@@ -166,17 +166,6 @@
     ssl_write_failed,
 };
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( void )
 {
diff --git a/programs/ssl/query_config.c b/programs/ssl/query_config.c
index 8bf93d3..98a5df2 100644
--- a/programs/ssl/query_config.c
+++ b/programs/ssl/query_config.c
@@ -282,6 +282,14 @@
     }
 #endif /* MBEDTLS_CHECK_PARAMS */
 
+#if defined(MBEDTLS_CHECK_PARAMS_ASSERT)
+    if( strcmp( "MBEDTLS_CHECK_PARAMS_ASSERT", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_CHECK_PARAMS_ASSERT );
+        return( 0 );
+    }
+#endif /* MBEDTLS_CHECK_PARAMS_ASSERT */
+
 #if defined(MBEDTLS_TIMING_ALT)
     if( strcmp( "MBEDTLS_TIMING_ALT", config ) == 0 )
     {
diff --git a/programs/ssl/ssl_client1.c b/programs/ssl/ssl_client1.c
index 646909f..b723243 100644
--- a/programs/ssl/ssl_client1.c
+++ b/programs/ssl/ssl_client1.c
@@ -71,17 +71,6 @@
 
 #define DEBUG_LEVEL 1
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static void my_debug( void *ctx, int level,
                       const char *file, int line,
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 515a42d..4221159 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -131,6 +131,7 @@
 #define DFL_ETM                 -1
 #define DFL_CA_CALLBACK         0
 #define DFL_EAP_TLS             0
+#define DFL_REPRODUCIBLE        0
 
 #define GET_REQUEST "GET %s HTTP/1.0\r\nExtra-header: "
 #define GET_REQUEST_END "\r\n\r\n"
@@ -313,6 +314,9 @@
 #define USAGE_ETM ""
 #endif
 
+#define USAGE_REPRODUCIBLE \
+    "    reproducible=0/1     default: 0 (disabled)\n"
+
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
 #define USAGE_RENEGO \
     "    renegotiation=%%d    default: 0 (disabled)\n"      \
@@ -384,6 +388,7 @@
     USAGE_FALLBACK                                          \
     USAGE_EMS                                               \
     USAGE_ETM                                               \
+    USAGE_REPRODUCIBLE                                      \
     USAGE_CURVES                                            \
     USAGE_RECSPLIT                                          \
     USAGE_DHMLEN                                            \
@@ -405,17 +410,6 @@
 #define ALPN_LIST_SIZE  10
 #define CURVE_LIST_SIZE 20
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
@@ -484,6 +478,7 @@
     const char *cid_val;        /* the CID to use for incoming messages     */
     const char *cid_val_renego; /* the CID to use for incoming messages
                                  * after renegotiation                      */
+    int reproducible;           /* make communication reproducible          */
 } opt;
 
 int query_config( const char *config );
@@ -540,6 +535,28 @@
     fflush(  (FILE *) ctx  );
 }
 
+
+mbedtls_time_t dummy_constant_time( mbedtls_time_t* time )
+{
+    (void) time;
+    return 0x5af2a056;
+}
+
+int dummy_entropy( void *data, unsigned char *output, size_t len )
+{
+    size_t i;
+    int ret;
+    (void) data;
+
+    ret = mbedtls_entropy_func( data, output, len );
+    for ( i = 0; i < len; i++ )
+    {
+        //replace result with pseudo random
+        output[i] = (unsigned char) rand();
+    }
+    return( ret );
+}
+
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
 int ca_callback( void *data, mbedtls_x509_crt const *child,
                  mbedtls_x509_crt **candidates )
@@ -1027,6 +1044,7 @@
     opt.etm                 = DFL_ETM;
     opt.dgram_packing       = DFL_DGRAM_PACKING;
     opt.eap_tls             = DFL_EAP_TLS;
+    opt.reproducible        = DFL_REPRODUCIBLE;
 
     for( i = 1; i < argc; i++ )
     {
@@ -1413,6 +1431,10 @@
             if( opt.eap_tls < 0 || opt.eap_tls > 1 )
                 goto usage;
         }
+        else if( strcmp( p, "reproducible" ) == 0 )
+        {
+            opt.reproducible = 1;
+        }
         else
             goto usage;
     }
@@ -1451,7 +1473,6 @@
     }
 #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
 
-
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     if( opt.psk_opaque != 0 )
     {
@@ -1665,13 +1686,28 @@
     fflush( stdout );
 
     mbedtls_entropy_init( &entropy );
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
-                                       &entropy, (const unsigned char *) pers,
-                                       strlen( pers ) ) ) != 0 )
+    if (opt.reproducible)
     {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
-                        -ret );
-        goto exit;
+        srand( 1 );
+        if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy,
+                                           &entropy, (const unsigned char *) pers,
+                                           strlen( pers ) ) ) != 0 )
+        {
+            mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
+                            -ret );
+            goto exit;
+        }
+    }
+    else
+    {
+        if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
+                                           &entropy, (const unsigned char *) pers,
+                                           strlen( pers ) ) ) != 0 )
+        {
+            mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
+                            -ret );
+            goto exit;
+        }
     }
 
     mbedtls_printf( " ok\n" );
@@ -1964,6 +2000,16 @@
         }
 #endif
 
+    if (opt.reproducible)
+    {
+#if defined(MBEDTLS_HAVE_TIME)
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)
+        mbedtls_platform_set_time( dummy_constant_time );
+#else
+        fprintf( stderr, "Warning: reproducible option used without constant time\n" );
+#endif
+#endif
+    }
     mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
     mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
 
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index b6f1cc4..80407e4 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -87,17 +87,6 @@
 
 #define DEBUG_LEVEL 0
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static void my_debug( void *ctx, int level,
                       const char *file, int line,
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index c73297c..3163e21 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -142,17 +142,6 @@
     "    force_ciphersuite=<name>    default: all enabled\n"  \
     " acceptable ciphersuite names:\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/ssl/ssl_pthread_server.c b/programs/ssl/ssl_pthread_server.c
index b502695..0624d33 100644
--- a/programs/ssl/ssl_pthread_server.c
+++ b/programs/ssl/ssl_pthread_server.c
@@ -81,17 +81,6 @@
 #include "mbedtls/memory_buffer_alloc.h"
 #endif
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 #define HTTP_RESPONSE \
     "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
@@ -463,7 +452,6 @@
 
     mbedtls_printf( " ok\n" );
 
-
     /*
      * 2. Setup the listening TCP socket
      */
diff --git a/programs/ssl/ssl_server.c b/programs/ssl/ssl_server.c
index 1852b2b..3e1d9a4 100644
--- a/programs/ssl/ssl_server.c
+++ b/programs/ssl/ssl_server.c
@@ -83,17 +83,6 @@
 
 #define DEBUG_LEVEL 0
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static void my_debug( void *ctx, int level,
                       const char *file, int line,
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 3c75c65..bbe93cb 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -173,6 +173,7 @@
 #define DFL_ETM                 -1
 #define DFL_CA_CALLBACK         0
 #define DFL_EAP_TLS             0
+#define DFL_REPRODUCIBLE        0
 
 #define LONG_RESPONSE "<p>01-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
     "02-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
@@ -403,6 +404,9 @@
 #define USAGE_ETM ""
 #endif
 
+#define USAGE_REPRODUCIBLE \
+    "    reproducible=0/1     default: 0 (disabled)\n"
+
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
 #define USAGE_RENEGO \
     "    renegotiation=%%d    default: 0 (disabled)\n"      \
@@ -471,6 +475,7 @@
     "\n"                                                    \
     USAGE_TICKETS                                           \
     USAGE_EAP_TLS                                           \
+    USAGE_REPRODUCIBLE                                      \
     USAGE_CACHE                                             \
     USAGE_MAX_FRAG_LEN                                      \
     USAGE_TRUNC_HMAC                                        \
@@ -496,7 +501,6 @@
     "                                is printed if it is defined\n"     \
     " acceptable ciphersuite names:\n"
 
-
 #define ALPN_LIST_SIZE  10
 #define CURVE_LIST_SIZE 20
 
@@ -512,17 +516,6 @@
     (out_be)[(i) + 7] = (unsigned char)( ( (in_le) >> 0  ) & 0xFF );    \
 }
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
@@ -599,6 +592,7 @@
     const char *cid_val;        /* the CID to use for incoming messages     */
     const char *cid_val_renego; /* the CID to use for incoming messages
                                  * after renegotiation                      */
+    int reproducible;           /* make communication reproducible          */
 } opt;
 
 int query_config( const char *config );
@@ -654,6 +648,26 @@
     fflush(  (FILE *) ctx  );
 }
 
+mbedtls_time_t dummy_constant_time( mbedtls_time_t* time )
+{
+    (void) time;
+    return 0x5af2a056;
+}
+
+int dummy_entropy( void *data, unsigned char *output, size_t len )
+{
+    size_t i;
+    int ret;
+    (void) data;
+
+    ret = mbedtls_entropy_func( data, output, len );
+    for (i = 0; i < len; i++ ) {
+        //replace result with pseudo random
+        output[i] = (unsigned char) rand();
+    }
+    return( ret );
+}
+
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
 int ca_callback( void *data, mbedtls_x509_crt const *child,
                  mbedtls_x509_crt **candidates)
@@ -1730,6 +1744,7 @@
     opt.extended_ms         = DFL_EXTENDED_MS;
     opt.etm                 = DFL_ETM;
     opt.eap_tls             = DFL_EAP_TLS;
+    opt.reproducible        = DFL_REPRODUCIBLE;
 
     for( i = 1; i < argc; i++ )
     {
@@ -2148,6 +2163,10 @@
             if( opt.eap_tls < 0 || opt.eap_tls > 1 )
                 goto usage;
         }
+        else if( strcmp( p, "reproducible" ) == 0 )
+        {
+            opt.reproducible = 1;
+        }
         else
             goto usage;
     }
@@ -2448,13 +2467,28 @@
     fflush( stdout );
 
     mbedtls_entropy_init( &entropy );
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
-                                       &entropy, (const unsigned char *) pers,
-                                       strlen( pers ) ) ) != 0 )
+    if (opt.reproducible)
     {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
-                        -ret );
-        goto exit;
+        srand( 1 );
+        if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy,
+                                           &entropy, (const unsigned char *) pers,
+                                           strlen( pers ) ) ) != 0 )
+        {
+            mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
+                            -ret );
+            goto exit;
+        }
+    }
+    else
+    {
+        if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
+                                           &entropy, (const unsigned char *) pers,
+                                           strlen( pers ) ) ) != 0 )
+        {
+            mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
+                            -ret );
+            goto exit;
+        }
     }
 
     mbedtls_printf( " ok\n" );
@@ -2786,6 +2820,16 @@
         }
 #endif
 
+    if (opt.reproducible)
+    {
+#if defined(MBEDTLS_HAVE_TIME)
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)
+        mbedtls_platform_set_time( dummy_constant_time );
+#else
+        fprintf( stderr, "Warning: reproducible option used without constant time\n" );
+#endif
+#endif
+    }
     mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
     mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
 
diff --git a/programs/test/benchmark.c b/programs/test/benchmark.c
index e31faaf..2b86566 100644
--- a/programs/test/benchmark.c
+++ b/programs/test/benchmark.c
@@ -258,17 +258,6 @@
          rsa, dhm, ecdsa, ecdh;
 } todo_list;
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index 9d3ea7e..727054e 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -77,17 +77,6 @@
 #include "mbedtls/memory_buffer_alloc.h"
 #endif
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#include "mbedtls/platform_util.h"
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 static int test_snprintf( size_t n, const char ref_buf[10], int ref_ret )
 {
diff --git a/programs/util/pem2der.c b/programs/util/pem2der.c
index 0cc9d06..f184939 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -65,17 +65,6 @@
 }
 #else
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#define mbedtls_exit            exit
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 38fbd51..432eefb 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -100,17 +100,6 @@
     "    permissive=%%d       default: 0 (disabled)\n"  \
     "\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#define mbedtls_exit            exit
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index b2052ec..f3d9157 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -107,16 +107,6 @@
     "                          SHA384, SHA512\n"       \
     "\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 497c337..c3e89be 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -154,17 +154,6 @@
     "                            object_signing_ca\n"     \
     "\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#define mbedtls_exit            exit
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index a951570..127320a 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -61,17 +61,6 @@
     "    filename=%%s         default: crl.pem\n"      \
     "\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#define mbedtls_exit            exit
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index 04ad119..3bb4277 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -61,17 +61,6 @@
     "    filename=%%s         default: cert.req\n"      \
     "\n"
 
-#if defined(MBEDTLS_CHECK_PARAMS)
-#define mbedtls_exit            exit
-void mbedtls_param_failed( const char *failure_condition,
-                           const char *file,
-                           int line )
-{
-    mbedtls_printf( "%s:%i: Input param failed - %s\n",
-                    file, line, failure_condition );
-    mbedtls_exit( MBEDTLS_EXIT_FAILURE );
-}
-#endif
 
 /*
  * global options
diff --git a/scripts/data_files/version_features.fmt b/scripts/data_files/version_features.fmt
index 767eda1..63ae94c 100644
--- a/scripts/data_files/version_features.fmt
+++ b/scripts/data_files/version_features.fmt
@@ -31,7 +31,7 @@
 
 #include <string.h>
 
-static const char *features[] = {
+static const char * const features[] = {
 #if defined(MBEDTLS_VERSION_FEATURES)
 FEATURE_DEFINES
 #endif /* MBEDTLS_VERSION_FEATURES */
@@ -40,7 +40,7 @@
 
 int mbedtls_version_check_feature( const char *feature )
 {
-    const char **idx = features;
+    const char * const *idx = features;
 
     if( *idx == NULL )
         return( -2 );
diff --git a/tests/Makefile b/tests/Makefile
index c263e64..27ce338 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -3,7 +3,7 @@
 # To compile with PKCS11: add "-lpkcs11-helper" to LDFLAGS
 
 CFLAGS	?= -O2
-WARNING_CFLAGS ?= -Wall -W -Wdeclaration-after-statement -Wno-unused-function -Wno-unused-value
+WARNING_CFLAGS ?= -Wall -W -Wdeclaration-after-statement -Wunused
 LDFLAGS ?=
 
 LOCAL_CFLAGS = $(WARNING_CFLAGS) -I../include -D_FILE_OFFSET_BITS=64
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index c2d81b9..9d628f8 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -846,9 +846,21 @@
     if_build_succeeded env OPENSSL_CMD="$OPENSSL_NEXT" tests/compat.sh -e '^$' -f 'ARIA\|CHACHA'
 }
 
+component_test_check_params_functionality () {
+    msg "build+test: MBEDTLS_CHECK_PARAMS functionality"
+    scripts/config.pl full # includes CHECK_PARAMS
+    # Make MBEDTLS_PARAM_FAILED call mbedtls_param_failed().
+    scripts/config.pl unset MBEDTLS_CHECK_PARAMS_ASSERT
+    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
+    # Only build and run tests. Do not build sample programs, because
+    # they don't have a mbedtls_param_failed() function.
+    make CC=gcc CFLAGS='-Werror -O1' lib test
+}
+
 component_test_check_params_without_platform () {
     msg "build+test: MBEDTLS_CHECK_PARAMS without MBEDTLS_PLATFORM_C"
     scripts/config.pl full # includes CHECK_PARAMS
+    # Keep MBEDTLS_PARAM_FAILED as assert.
     scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # too slow for tests
     scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
     scripts/config.pl unset MBEDTLS_PLATFORM_EXIT_ALT
@@ -866,6 +878,7 @@
     msg "build+test: MBEDTLS_CHECK_PARAMS with alternative MBEDTLS_PARAM_FAILED()"
     scripts/config.pl full # includes CHECK_PARAMS
     scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # too slow for tests
+    # Set MBEDTLS_PARAM_FAILED to nothing.
     sed -i 's/.*\(#define MBEDTLS_PARAM_FAILED( cond )\).*/\1/' "$CONFIG_H"
     make CC=gcc CFLAGS='-Werror -O1' all test
 }
@@ -1017,7 +1030,7 @@
     # Build once with -O0, to compile out the i386 specific inline assembly
     msg "build: i386, make, gcc -O0 (ASan build)" # ~ 30s
     scripts/config.pl full
-    make CC=gcc CFLAGS='-O0 -Werror -Wall -Wextra -m32 -fsanitize=address'
+    make CC=gcc CFLAGS='-O0 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32'
 
     msg "test: i386, make, gcc -O0 (ASan build)"
     make test
@@ -1036,7 +1049,7 @@
     scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE
     scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
     scripts/config.pl unset MBEDTLS_MEMORY_DEBUG
-    make CC=gcc CFLAGS='-O1 -Werror -Wall -Wextra -m32 -fsanitize=address'
+    make CC=gcc CFLAGS='-O1 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32'
 
     msg "test: i386, make, gcc -O1 (ASan build)"
     make test
@@ -1051,7 +1064,7 @@
 component_test_mx32 () {
     msg "build: 64-bit ILP32, make, gcc" # ~ 30s
     scripts/config.pl full
-    make CC=gcc CFLAGS='-Werror -Wall -Wextra -mx32'
+    make CC=gcc CFLAGS='-Werror -Wall -Wextra -mx32' LDFLAGS='-mx32'
 
     msg "test: 64-bit ILP32, make, gcc"
     make test
@@ -1065,39 +1078,13 @@
 
 component_build_arm_none_eabi_gcc () {
     msg "build: arm-none-eabi-gcc, make" # ~ 10s
-    scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_NET_C
-    scripts/config.pl unset MBEDTLS_TIMING_C
-    scripts/config.pl unset MBEDTLS_FS_IO
-    scripts/config.pl unset MBEDTLS_ENTROPY_NV_SEED
-    scripts/config.pl set MBEDTLS_NO_PLATFORM_ENTROPY
-    scripts/config.pl unset MBEDTLS_PSA_CRYPTO_STORAGE_C
-    scripts/config.pl unset MBEDTLS_PSA_ITS_FILE_C
-    # following things are not in the default config
-    scripts/config.pl unset MBEDTLS_HAVEGE_C # depends on timing.c
-    scripts/config.pl unset MBEDTLS_THREADING_PTHREAD
-    scripts/config.pl unset MBEDTLS_THREADING_C
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # execinfo.h
-    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C # calls exit
+    scripts/config.pl baremetal
     make CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -Wall -Wextra' lib
 }
 
 component_build_arm_none_eabi_gcc_no_udbl_division () {
     msg "build: arm-none-eabi-gcc -DMBEDTLS_NO_UDBL_DIVISION, make" # ~ 10s
-    scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_NET_C
-    scripts/config.pl unset MBEDTLS_TIMING_C
-    scripts/config.pl unset MBEDTLS_FS_IO
-    scripts/config.pl unset MBEDTLS_ENTROPY_NV_SEED
-    scripts/config.pl set MBEDTLS_NO_PLATFORM_ENTROPY
-    scripts/config.pl unset MBEDTLS_PSA_CRYPTO_STORAGE_C
-    scripts/config.pl unset MBEDTLS_PSA_ITS_FILE_C
-    # following things are not in the default config
-    scripts/config.pl unset MBEDTLS_HAVEGE_C # depends on timing.c
-    scripts/config.pl unset MBEDTLS_THREADING_PTHREAD
-    scripts/config.pl unset MBEDTLS_THREADING_C
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # execinfo.h
-    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C # calls exit
+    scripts/config.pl baremetal
     scripts/config.pl set MBEDTLS_NO_UDBL_DIVISION
     make CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -Wall -Wextra' lib
     echo "Checking that software 64-bit division is not required"
@@ -1106,20 +1093,7 @@
 
 component_build_arm_none_eabi_gcc_no_64bit_multiplication () {
     msg "build: arm-none-eabi-gcc MBEDTLS_NO_64BIT_MULTIPLICATION, make" # ~ 10s
-    scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_NET_C
-    scripts/config.pl unset MBEDTLS_TIMING_C
-    scripts/config.pl unset MBEDTLS_FS_IO
-    scripts/config.pl unset MBEDTLS_ENTROPY_NV_SEED
-    scripts/config.pl unset MBEDTLS_PSA_CRYPTO_STORAGE_C
-    scripts/config.pl unset MBEDTLS_PSA_ITS_FILE_C
-    scripts/config.pl set MBEDTLS_NO_PLATFORM_ENTROPY
-    # following things are not in the default config
-    scripts/config.pl unset MBEDTLS_HAVEGE_C # depends on timing.c
-    scripts/config.pl unset MBEDTLS_THREADING_PTHREAD
-    scripts/config.pl unset MBEDTLS_THREADING_C
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # execinfo.h
-    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C # calls exit
+    scripts/config.pl baremetal
     scripts/config.pl set MBEDTLS_NO_64BIT_MULTIPLICATION
     make CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -O1 -march=armv6-m -mthumb' lib
     echo "Checking that software 64-bit multiplication is not required"
@@ -1128,24 +1102,7 @@
 
 component_build_armcc () {
     msg "build: ARM Compiler 5, make"
-    scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_NET_C
-    scripts/config.pl unset MBEDTLS_TIMING_C
-    scripts/config.pl unset MBEDTLS_FS_IO
-    scripts/config.pl unset MBEDTLS_ENTROPY_NV_SEED
-    scripts/config.pl unset MBEDTLS_HAVE_TIME
-    scripts/config.pl unset MBEDTLS_HAVE_TIME_DATE
-    scripts/config.pl set MBEDTLS_NO_PLATFORM_ENTROPY
-    scripts/config.pl unset MBEDTLS_PSA_CRYPTO_STORAGE_C
-    scripts/config.pl unset MBEDTLS_PSA_ITS_FILE_C
-    # following things are not in the default config
-    scripts/config.pl unset MBEDTLS_DEPRECATED_WARNING
-    scripts/config.pl unset MBEDTLS_HAVEGE_C # depends on timing.c
-    scripts/config.pl unset MBEDTLS_THREADING_PTHREAD
-    scripts/config.pl unset MBEDTLS_THREADING_C
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # execinfo.h
-    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C # calls exit
-    scripts/config.pl unset MBEDTLS_PLATFORM_TIME_ALT # depends on MBEDTLS_HAVE_TIME
+    scripts/config.pl baremetal
 
     make CC="$ARMC5_CC" AR="$ARMC5_AR" WARNING_CFLAGS='--strict --c99' lib
     make clean
diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index 269cdad..cf7a1c5 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -215,7 +215,7 @@
 #define TEST_VALID_PARAM( TEST )                                    \
     TEST_ASSERT( ( TEST, 1 ) );
 
-#define assert(a) if( !( a ) )                                      \
+#define TEST_HELPER_ASSERT(a) if( !( a ) )                                      \
 {                                                                   \
     mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n",   \
                              __FILE__, __LINE__, #a );              \
@@ -286,7 +286,7 @@
 /*----------------------------------------------------------------------------*/
 /* Helper Functions */
 
-static void test_fail( const char *test, int line_no, const char* filename )
+void test_fail( const char *test, int line_no, const char* filename )
 {
     test_info.failed = 1;
     test_info.test = test;
@@ -377,11 +377,11 @@
 }
 #endif /* __unix__ || __APPLE__ __MACH__ */
 
-static int unhexify( unsigned char *obuf, const char *ibuf )
+int unhexify( unsigned char *obuf, const char *ibuf )
 {
     unsigned char c, c2;
     int len = strlen( ibuf ) / 2;
-    assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
+    TEST_HELPER_ASSERT( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
 
     while( *ibuf != 0 )
     {
@@ -393,7 +393,7 @@
         else if( c >= 'A' && c <= 'F' )
             c -= 'A' - 10;
         else
-            assert( 0 );
+            TEST_HELPER_ASSERT( 0 );
 
         c2 = *ibuf++;
         if( c2 >= '0' && c2 <= '9' )
@@ -403,7 +403,7 @@
         else if( c2 >= 'A' && c2 <= 'F' )
             c2 -= 'A' - 10;
         else
-            assert( 0 );
+            TEST_HELPER_ASSERT( 0 );
 
         *obuf++ = ( c << 4 ) | c2;
     }
@@ -411,7 +411,7 @@
     return len;
 }
 
-static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
+void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
 {
     unsigned char l, h;
 
@@ -448,7 +448,7 @@
     size_t actual_len = ( len != 0 ) ? len : 1;
 
     p = mbedtls_calloc( 1, actual_len );
-    assert( p != NULL );
+    TEST_HELPER_ASSERT( p != NULL );
 
     memset( p, 0x00, actual_len );
 
@@ -465,7 +465,7 @@
  *
  * For convenience, dies if allocation fails.
  */
-static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
+unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
 {
     unsigned char *obuf;
 
@@ -475,7 +475,7 @@
         return( zero_alloc( *olen ) );
 
     obuf = mbedtls_calloc( 1, *olen );
-    assert( obuf != NULL );
+    TEST_HELPER_ASSERT( obuf != NULL );
 
     (void) unhexify( obuf, ibuf );
 
@@ -516,7 +516,7 @@
  *
  * rng_state shall be NULL.
  */
-static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
+int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
 {
     if( rng_state != NULL )
         rng_state  = NULL;
@@ -543,7 +543,7 @@
  *
  * After the buffer is empty it will return rand();
  */
-static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
+int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
 {
     rnd_buf_info *info = (rnd_buf_info *) rng_state;
     size_t use_len;
@@ -589,7 +589,7 @@
  *
  * rng_state shall be a pointer to a rnd_pseudo_info structure.
  */
-static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
+int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
 {
     rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state;
     uint32_t i, *k, sum, delta=0x9E3779B9;
diff --git a/tests/suites/host_test.function b/tests/suites/host_test.function
index 3c43032..fe6a2bc 100644
--- a/tests/suites/host_test.function
+++ b/tests/suites/host_test.function
@@ -179,7 +179,7 @@
             if( p + 1 < buf + len )
             {
                 cur = p + 1;
-                assert( cnt < params_len );
+                TEST_HELPER_ASSERT( cnt < params_len );
                 params[cnt++] = cur;
             }
             *p = '\0';
diff --git a/tests/suites/target_test.function b/tests/suites/target_test.function
index 56abf29..e4c3e30 100644
--- a/tests/suites/target_test.function
+++ b/tests/suites/target_test.function
@@ -13,11 +13,11 @@
  */
 #define INCR_ASSERT(p, start, len, step) do                     \
 {                                                               \
-    assert( ( p ) >= ( start ) );                               \
-    assert( sizeof( *( p ) ) == sizeof( *( start ) ) );         \
+    TEST_HELPER_ASSERT( ( p ) >= ( start ) );                               \
+    TEST_HELPER_ASSERT( sizeof( *( p ) ) == sizeof( *( start ) ) );         \
     /* <= is checked to support use inside a loop where         \
        pointer is incremented after reading data.       */      \
-    assert( (uint32_t)( ( ( p ) - ( start ) ) + ( step ) ) <= ( len ) );\
+    TEST_HELPER_ASSERT( (uint32_t)( ( ( p ) - ( start ) ) + ( step ) ) <= ( len ) );\
     ( p ) += ( step );                                          \
 }                                                               \
 while( 0 )
@@ -127,7 +127,7 @@
     /* Read data length */
     *data_len = receive_uint32();
     data = (uint8_t *)malloc( *data_len );
-    assert( data != NULL );
+    TEST_HELPER_ASSERT( data != NULL );
 
     greentea_getc(); // read ';' received after key i.e. *data_len
 
@@ -221,7 +221,7 @@
     hex_count = find_hex_count(count, data, data_len);
 
     params = (void **)malloc( sizeof( void *) * ( count + hex_count ) );
-    assert( params != NULL );
+    TEST_HELPER_ASSERT( params != NULL );
     cur = params;
 
     p = data;
@@ -360,7 +360,7 @@
         {
             /* Read dependency count */
             count = *p;
-            assert( count < data_len );
+            TEST_HELPER_ASSERT( count < data_len );
             INCR_ASSERT( p, data, data_len, sizeof( uint8_t ) );
             ret = verify_dependencies( count, p );
             if ( ret != DEPENDENCY_SUPPORTED )