diff --git a/.gitignore b/.gitignore
index 288c71b..e483bc7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,3 +60,6 @@
 /TAGS
 /cscope*.out
 /tags
+
+# Clangd compilation database
+compile_commands.json
diff --git a/ChangeLog.d/armclang-compile-fix.txt b/ChangeLog.d/armclang-compile-fix.txt
new file mode 100644
index 0000000..59ae1cd
--- /dev/null
+++ b/ChangeLog.d/armclang-compile-fix.txt
@@ -0,0 +1,7 @@
+Bugfix
+   * Fix clang and armclang compilation error when targeting certain Arm
+     M-class CPUs (Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M23,
+     SecurCore SC000). Fixes #1077.
+Changes
+   * Enable Arm / Thumb bignum assembly for most Arm platforms when
+     compiling with gcc, clang or armclang and -O0.
diff --git a/ChangeLog.d/fix-unterminated-pragma-clang-attribute-push.txt b/ChangeLog.d/fix-unterminated-pragma-clang-attribute-push.txt
new file mode 100644
index 0000000..7fcb5ec
--- /dev/null
+++ b/ChangeLog.d/fix-unterminated-pragma-clang-attribute-push.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Fix "unterminated '#pragma clang attribute push'" in sha256/sha512.c when
+     built with MBEDTLS_SHAxxx_USE_A64_CRYPTO_IF_PRESENT but don't have a
+     way to detect the crypto extensions required. A warning is still issued.
diff --git a/library/bn_mul.h b/library/bn_mul.h
index ab59fbd..c5994f7 100644
--- a/library/bn_mul.h
+++ b/library/bn_mul.h
@@ -658,6 +658,20 @@
 
 #endif /* TriCore */
 
+#if defined(__arm__)
+
+#if defined(__thumb__) && !defined(__thumb2__)
+#if !defined(__ARMCC_VERSION) && !defined(__clang__) \
+    && !defined(__llvm__) && !defined(__INTEL_COMPILER)
+/*
+ * Thumb 1 ISA. This code path has only been tested successfully on gcc;
+ * it does not compile on clang or armclang.
+ *
+ * Other compilers which define __GNUC__ may not work. The above macro
+ * attempts to exclude these untested compilers.
+ */
+
+#if !defined(__OPTIMIZE__) && defined(__GNUC__)
 /*
  * Note, gcc -O0 by default uses r7 for the frame pointer, so it complains about
  * our use of r7 below, unless -fomit-frame-pointer is passed.
@@ -666,32 +680,39 @@
  * x !=0, which we can detect using __OPTIMIZE__ (which is also defined by
  * clang and armcc5 under the same conditions).
  *
- * So, only use the optimized assembly below for optimized build, which avoids
- * the build error and is pretty reasonable anyway.
+ * If gcc needs to use r7, we use r1 as a scratch register and have a few extra
+ * instructions to preserve/restore it; otherwise, we can use r7 and avoid
+ * the preserve/restore overhead.
  */
-#if defined(__GNUC__) && !defined(__OPTIMIZE__)
-#define MULADDC_CANNOT_USE_R7
-#endif
-
-#if defined(__arm__) && !defined(MULADDC_CANNOT_USE_R7)
-
-#if defined(__thumb__) && !defined(__thumb2__)
+#define MULADDC_SCRATCH              "RS .req r1         \n\t"
+#define MULADDC_PRESERVE_SCRATCH     "mov    r10, r1     \n\t"
+#define MULADDC_RESTORE_SCRATCH      "mov    r1, r10     \n\t"
+#define MULADDC_SCRATCH_CLOBBER      "r10"
+#else /* !defined(__OPTIMIZE__) && defined(__GNUC__) */
+#define MULADDC_SCRATCH              "RS .req r7         \n\t"
+#define MULADDC_PRESERVE_SCRATCH     ""
+#define MULADDC_RESTORE_SCRATCH      ""
+#define MULADDC_SCRATCH_CLOBBER      "r7"
+#endif /* !defined(__OPTIMIZE__) && defined(__GNUC__) */
 
 #define MULADDC_X1_INIT                                 \
     asm(                                                \
+    MULADDC_SCRATCH                                     \
             "ldr    r0, %3                      \n\t"   \
             "ldr    r1, %4                      \n\t"   \
             "ldr    r2, %5                      \n\t"   \
             "ldr    r3, %6                      \n\t"   \
-            "lsr    r7, r3, #16                 \n\t"   \
-            "mov    r9, r7                      \n\t"   \
-            "lsl    r7, r3, #16                 \n\t"   \
-            "lsr    r7, r7, #16                 \n\t"   \
-            "mov    r8, r7                      \n\t"
+            "lsr    r4, r3, #16                 \n\t"   \
+            "mov    r9, r4                      \n\t"   \
+            "lsl    r4, r3, #16                 \n\t"   \
+            "lsr    r4, r4, #16                 \n\t"   \
+            "mov    r8, r4                      \n\t"   \
+
 
 #define MULADDC_X1_CORE                                 \
+            MULADDC_PRESERVE_SCRATCH                    \
             "ldmia  r0!, {r6}                   \n\t"   \
-            "lsr    r7, r6, #16                 \n\t"   \
+            "lsr    RS, r6, #16                 \n\t"   \
             "lsl    r6, r6, #16                 \n\t"   \
             "lsr    r6, r6, #16                 \n\t"   \
             "mov    r4, r8                      \n\t"   \
@@ -699,12 +720,12 @@
             "mov    r3, r9                      \n\t"   \
             "mul    r6, r3                      \n\t"   \
             "mov    r5, r9                      \n\t"   \
-            "mul    r5, r7                      \n\t"   \
+            "mul    r5, RS                      \n\t"   \
             "mov    r3, r8                      \n\t"   \
-            "mul    r7, r3                      \n\t"   \
+            "mul    RS, r3                      \n\t"   \
             "lsr    r3, r6, #16                 \n\t"   \
             "add    r5, r5, r3                  \n\t"   \
-            "lsr    r3, r7, #16                 \n\t"   \
+            "lsr    r3, RS, #16                 \n\t"   \
             "add    r5, r5, r3                  \n\t"   \
             "add    r4, r4, r2                  \n\t"   \
             "mov    r2, #0                      \n\t"   \
@@ -712,9 +733,10 @@
             "lsl    r3, r6, #16                 \n\t"   \
             "add    r4, r4, r3                  \n\t"   \
             "adc    r5, r2                      \n\t"   \
-            "lsl    r3, r7, #16                 \n\t"   \
+            "lsl    r3, RS, #16                 \n\t"   \
             "add    r4, r4, r3                  \n\t"   \
             "adc    r5, r2                      \n\t"   \
+            MULADDC_RESTORE_SCRATCH                     \
             "ldr    r3, [r1]                    \n\t"   \
             "add    r4, r4, r3                  \n\t"   \
             "adc    r2, r5                      \n\t"   \
@@ -727,11 +749,15 @@
          : "=m" (c),  "=m" (d), "=m" (s)        \
          : "m" (s), "m" (d), "m" (c), "m" (b)   \
          : "r0", "r1", "r2", "r3", "r4", "r5",  \
-           "r6", "r7", "r8", "r9", "cc"         \
+           "r6", MULADDC_SCRATCH_CLOBBER, "r8", "r9", "cc" \
          );
+#endif /* !defined(__ARMCC_VERSION) && !defined(__clang__) */
 
 #elif (__ARM_ARCH >= 6) && \
     defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
+/* Armv6-M (or later) with DSP Instruction Set Extensions.
+ * Requires support for either Thumb 2 or Arm ISA.
+ */
 
 #define MULADDC_X1_INIT                            \
     {                                              \
@@ -796,7 +822,7 @@
         );                                                   \
     }
 
-#else
+#else /* Thumb 2 or Arm ISA, without DSP extensions */
 
 #define MULADDC_X1_INIT                                 \
     asm(                                                \
@@ -810,9 +836,9 @@
             "mov    r5, #0                      \n\t"   \
             "ldr    r6, [r1]                    \n\t"   \
             "umlal  r2, r5, r3, r4              \n\t"   \
-            "adds   r7, r6, r2                  \n\t"   \
+            "adds   r4, r6, r2                  \n\t"   \
             "adc    r2, r5, #0                  \n\t"   \
-            "str    r7, [r1], #4                \n\t"
+            "str    r4, [r1], #4                \n\t"
 
 #define MULADDC_X1_STOP                                 \
             "str    r2, %0                      \n\t"   \
@@ -821,12 +847,12 @@
          : "=m" (c),  "=m" (d), "=m" (s)        \
          : "m" (s), "m" (d), "m" (c), "m" (b)   \
          : "r0", "r1", "r2", "r3", "r4", "r5",  \
-           "r6", "r7", "cc"                     \
+           "r6", "cc"                     \
          );
 
-#endif /* Thumb */
+#endif /* ISA codepath selection */
 
-#endif /* ARMv3 */
+#endif /* defined(__arm__) */
 
 #if defined(__alpha__)
 
diff --git a/library/sha256.c b/library/sha256.c
index 08822f4..169229c 100644
--- a/library/sha256.c
+++ b/library/sha256.c
@@ -399,6 +399,8 @@
             SHA256_BLOCK_SIZE) ? 0 : -1;
 }
 
+#endif /* MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT || MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY */
+
 #if defined(MBEDTLS_POP_TARGET_PRAGMA)
 #if defined(__clang__)
 #pragma clang attribute pop
@@ -408,8 +410,6 @@
 #undef MBEDTLS_POP_TARGET_PRAGMA
 #endif
 
-#endif /* MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT || MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY */
-
 #if !defined(MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT)
 #define mbedtls_internal_sha256_process_many_c mbedtls_internal_sha256_process_many
 #define mbedtls_internal_sha256_process_c      mbedtls_internal_sha256_process
diff --git a/library/sha512.c b/library/sha512.c
index 67acfee..b8b2485 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -569,6 +569,8 @@
             SHA512_BLOCK_SIZE) ? 0 : -1;
 }
 
+#endif /* MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT || MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY */
+
 #if defined(MBEDTLS_POP_TARGET_PRAGMA)
 #if defined(__clang__)
 #pragma clang attribute pop
@@ -578,8 +580,6 @@
 #undef MBEDTLS_POP_TARGET_PRAGMA
 #endif
 
-#endif /* MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT || MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY */
-
 
 #if !defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT)
 #define mbedtls_internal_sha512_process_many_c mbedtls_internal_sha512_process_many
diff --git a/library/x509.c b/library/x509.c
index 8a44264..6e16c4c 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -1438,7 +1438,22 @@
                    san_buf, sizeof(*san_buf));
         }
         break;
-
+        /*
+         * IP address
+         */
+        case (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_IP_ADDRESS):
+        {
+            memset(san, 0, sizeof(mbedtls_x509_subject_alternative_name));
+            san->type = MBEDTLS_X509_SAN_IP_ADDRESS;
+            // Only IPv6 (16 bytes) and IPv4 (4 bytes) types are supported
+            if (san_buf->len == 4 || san_buf->len == 16) {
+                memcpy(&san->san.unstructured_name,
+                       san_buf, sizeof(*san_buf));
+            } else {
+                return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+            }
+        }
+        break;
         /*
          * rfc822Name
          */
@@ -1449,7 +1464,6 @@
             memcpy(&san->san.unstructured_name, san_buf, sizeof(*san_buf));
         }
         break;
-
         /*
          * directoryName
          */
@@ -1564,7 +1578,9 @@
                 ret = mbedtls_snprintf(p, n, "\n%s    uniformResourceIdentifier : ", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
                 if (san.san.unstructured_name.len >= n) {
-                    *p = '\0';
+                    if (n > 0) {
+                        *p = '\0';
+                    }
                     return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
                 }
 
@@ -1590,7 +1606,9 @@
                                        MBEDTLS_X509_SAN_DNS_NAME ? dns_name : rfc822_name);
                 MBEDTLS_X509_SAFE_SNPRINTF;
                 if (san.san.unstructured_name.len >= n) {
-                    *p = '\0';
+                    if (n > 0) {
+                        *p = '\0';
+                    }
                     return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
                 }
 
@@ -1599,7 +1617,41 @@
                 n -= san.san.unstructured_name.len;
             }
             break;
+            /*
+             * iPAddress
+             */
+            case MBEDTLS_X509_SAN_IP_ADDRESS:
+            {
+                ret = mbedtls_snprintf(p, n, "\n%s    %s : ",
+                                       prefix, "iPAddress");
+                MBEDTLS_X509_SAFE_SNPRINTF;
+                if (san.san.unstructured_name.len >= n) {
+                    if (n > 0) {
+                        *p = '\0';
+                    }
+                    return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
+                }
 
+                unsigned char *ip = san.san.unstructured_name.p;
+                // Only IPv6 (16 bytes) and IPv4 (4 bytes) types are supported
+                if (san.san.unstructured_name.len == 4) {
+                    ret = mbedtls_snprintf(p, n, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
+                    MBEDTLS_X509_SAFE_SNPRINTF;
+                } else if (san.san.unstructured_name.len == 16) {
+                    ret = mbedtls_snprintf(p, n,
+                                           "%X%X:%X%X:%X%X:%X%X:%X%X:%X%X:%X%X:%X%X",
+                                           ip[0], ip[1], ip[2], ip[3], ip[4], ip[5], ip[6],
+                                           ip[7], ip[8], ip[9], ip[10], ip[11], ip[12], ip[13],
+                                           ip[14], ip[15]);
+                    MBEDTLS_X509_SAFE_SNPRINTF;
+                } else {
+                    if (n > 0) {
+                        *p = '\0';
+                    }
+                    return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+                }
+            }
+            break;
             /*
              * directoryName
              */
@@ -1615,6 +1667,9 @@
 
                 if (ret < 0) {
                     mbedtls_x509_free_subject_alt_name(&san);
+                    if (n > 0) {
+                        *p = '\0';
+                    }
                     return ret;
                 }
 
diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index ea8e0c9..b6f347e 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -440,8 +440,12 @@
 server5-fan.crt: server5.key
 	$(OPENSSL) req -x509 -new -subj "/C=UK/O=Mbed TLS/CN=Mbed TLS FAN" -set_serial 77 -config $(test_ca_config_file) -extensions fan_cert -days 3650 -sha256 -key server5.key -out $@
 
-server5-tricky-ip-san.crt: server5.key
-	$(OPENSSL) req -x509 -new -subj "/C=UK/O=Mbed TLS/CN=Mbed TLS Tricky IP SAN" -set_serial 77 -config $(test_ca_config_file) -extensions tricky_ip_san -days 3650 -sha256 -key server5.key -out $@
+server5-tricky-ip-san.crt.der: server5.key
+	$(OPENSSL) req -x509 -new -subj "/C=UK/O=Mbed TLS/CN=Mbed TLS Tricky IP SAN" -set_serial 77 -config $(test_ca_config_file) -extensions tricky_ip_san -days 3650 -sha256 -key server5.key -outform der -out $@
+
+# malformed IP length
+server5-tricky-ip-san-malformed-len.crt.der: server5-tricky-ip-san.crt.der
+	hexdump -ve '1/1 "%.2X"' $< | sed "s/87046162636487106162/87056162636487106162/" | xxd -r -p > $@
 
 server5-directoryname.crt.der: server5.key
 	$(OPENSSL) req -x509 -outform der -new -subj "/C=UK/O=Mbed TLS/CN=Mbed TLS directoryName SAN" -set_serial 77 -config $(test_ca_config_file) -extensions directory_name_san -days 3650 -sha256 -key server5.key -out $@
diff --git a/tests/data_files/server5-tricky-ip-san-malformed-len.crt.der b/tests/data_files/server5-tricky-ip-san-malformed-len.crt.der
new file mode 100644
index 0000000..a26da6c
--- /dev/null
+++ b/tests/data_files/server5-tricky-ip-san-malformed-len.crt.der
Binary files differ
diff --git a/tests/data_files/server5-tricky-ip-san.crt b/tests/data_files/server5-tricky-ip-san.crt
deleted file mode 100644
index 135830f..0000000
--- a/tests/data_files/server5-tricky-ip-san.crt
+++ /dev/null
@@ -1,11 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIBljCCATygAwIBAgIBTTAKBggqhkjOPQQDAjBBMQswCQYDVQQGEwJVSzERMA8G
-A1UECgwITWJlZCBUTFMxHzAdBgNVBAMMFk1iZWQgVExTIFRyaWNreSBJUCBTQU4w
-HhcNMjAwNzIzMTAyNzQ2WhcNMzAwNzIxMTAyNzQ2WjBBMQswCQYDVQQGEwJVSzER
-MA8GA1UECgwITWJlZCBUTFMxHzAdBgNVBAMMFk1iZWQgVExTIFRyaWNreSBJUCBT
-QU4wWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAAQ3zFbZdgkeWnI+x1kt/yBu7nz5
-BpF00K0UtfdoIllikk7lANgjEf/qL9I0XV0WvYqIwmt3DVXNiioO+gHItO3/oyUw
-IzAhBgNVHREEGjAYhwRhYmNkhxBhYmNkLmV4YW1wbGUuY29tMAoGCCqGSM49BAMC
-A0gAMEUCIFDc8ZALA/9Zv7dZTWrZOOp/dgPAEJRT+h68nD6KF+XyAiEAs1QqugOo
-Dwru0DSEmpYkmj1Keunpd0VopM0joC1cc5A=
------END CERTIFICATE-----
diff --git a/tests/data_files/server5-tricky-ip-san.crt.der b/tests/data_files/server5-tricky-ip-san.crt.der
new file mode 100644
index 0000000..0bd06f8
--- /dev/null
+++ b/tests/data_files/server5-tricky-ip-san.crt.der
Binary files differ
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 7b0893b..78179a8 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -411,6 +411,18 @@
     done
 }
 
+pre_parse_command_line_for_dirs () {
+    # Make an early pass through the options given, so we can set directories
+    # for Arm compilers, before SUPPORTED_COMPONENTS is determined.
+    while [ $# -gt 0 ]; do
+        case "$1" in
+            --armc5-bin-dir) shift; ARMC5_BIN_DIR="$1";;
+            --armc6-bin-dir) shift; ARMC6_BIN_DIR="$1";;
+        esac
+        shift
+    done
+}
+
 pre_parse_command_line () {
     COMMAND_LINE_COMPONENTS=
     all_except=0
@@ -427,8 +439,8 @@
             --arm-none-eabi-gcc-prefix) shift; ARM_NONE_EABI_GCC_PREFIX="$1";;
             --arm-linux-gnueabi-gcc-prefix) shift; ARM_LINUX_GNUEABI_GCC_PREFIX="$1";;
             --armcc) no_armcc=;;
-            --armc5-bin-dir) shift; ARMC5_BIN_DIR="$1";;
-            --armc6-bin-dir) shift; ARMC6_BIN_DIR="$1";;
+            --armc5-bin-dir) shift; ;; # assignment to ARMC5_BIN_DIR done in pre_parse_command_line_for_dirs
+            --armc6-bin-dir) shift; ;; # assignment to ARMC6_BIN_DIR done in pre_parse_command_line_for_dirs
             --error-test) error_test=$((error_test + 1));;
             --except) all_except=1;;
             --force|-f) FORCE=1;;
@@ -3895,6 +3907,25 @@
     not grep __aeabi_lmul library/*.o
 }
 
+component_build_arm_clang_thumb () {
+    # ~ 30s
+
+    scripts/config.py baremetal
+
+    msg "build: clang thumb 2, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -Os --target=arm-linux-gnueabihf -march=armv7-m -mthumb' lib
+
+    # Some Thumb 1 asm is sensitive to optimisation level, so test both -O0 and -Os
+    msg "build: clang thumb 1 -O0, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -O0 --target=arm-linux-gnueabihf -mcpu=arm1136j-s -mthumb' lib
+
+    msg "build: clang thumb 1 -Os, make"
+    make clean
+    make CC="clang" CFLAGS='-std=c99 -Werror -Os --target=arm-linux-gnueabihf -mcpu=arm1136j-s -mthumb' lib
+}
+
 component_build_armcc () {
     msg "build: ARM Compiler 5"
     scripts/config.py baremetal
@@ -3918,7 +3949,7 @@
 
     make clean
 
-    # Compile with -O1 since some Arm inline assembly is disabled for -O0.
+    # Compile mostly with -O1 since some Arm inline assembly is disabled for -O0.
 
     # ARM Compiler 6 - Target ARMv7-A
     armc6_build_test "-O1 --target=arm-arm-none-eabi -march=armv7-a"
@@ -3937,7 +3968,14 @@
 
     # ARM Compiler 6 - Target ARMv8.2-A - AArch64
     armc6_build_test "-O1 --target=aarch64-arm-none-eabi -march=armv8.2-a+crypto"
+
+    # ARM Compiler 6 - Target Cortex-M0 - no optimisation
+    armc6_build_test "-O0 --target=arm-arm-none-eabi -mcpu=cortex-m0"
+
+    # ARM Compiler 6 - Target Cortex-M0
+    armc6_build_test "-Os --target=arm-arm-none-eabi -mcpu=cortex-m0"
 }
+
 support_build_armcc () {
     armc5_cc="$ARMC5_BIN_DIR/armcc"
     armc6_cc="$ARMC6_BIN_DIR/armclang"
@@ -4419,6 +4457,7 @@
 
 # Preliminary setup
 pre_check_environment
+pre_parse_command_line_for_dirs "$@"
 pre_initialize_variables
 pre_parse_command_line "$@"
 
diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 36f1df1..35ad93e 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -128,7 +128,7 @@
 
 X509 CRT information, Subject Alt Name + Key Usage
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA1
-x509_cert_info:"data_files/parse_input/cert_example_multi_nocn.crt":"cert. version     \: 3\nserial number     \: F7\:C6\:7F\:F8\:E9\:A9\:63\:F9\nissuer name       \: C=NL\nsubject name      \: C=NL\nissued  on        \: 2014-01-22 10\:04\:33\nexpires on        \: 2024-01-22 10\:04\:33\nsigned using      \: RSA with SHA1\nRSA key size      \: 1024 bits\nbasic constraints \: CA=false\nsubject alt name  \:\n    dNSName \: www.shotokan-braunschweig.de\n    dNSName \: www.massimo-abate.eu\n    <unsupported>\n    <unsupported>\nkey usage         \: Digital Signature, Non Repudiation, Key Encipherment\n"
+x509_cert_info:"data_files/parse_input/cert_example_multi_nocn.crt":"cert. version     \: 3\nserial number     \: F7\:C6\:7F\:F8\:E9\:A9\:63\:F9\nissuer name       \: C=NL\nsubject name      \: C=NL\nissued  on        \: 2014-01-22 10\:04\:33\nexpires on        \: 2024-01-22 10\:04\:33\nsigned using      \: RSA with SHA1\nRSA key size      \: 1024 bits\nbasic constraints \: CA=false\nsubject alt name  \:\n    dNSName \: www.shotokan-braunschweig.de\n    dNSName \: www.massimo-abate.eu\n    iPAddress \: 192.168.1.1\n    iPAddress \: 192.168.69.144\nkey usage         \: Digital Signature, Non Repudiation, Key Encipherment\n"
 
 X509 CRT information, Subject Alt Name with uniformResourceIdentifier
 depends_on:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA256
@@ -190,6 +190,10 @@
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA256
 x509_cert_info:"data_files/parse_input/non-ascii-string-in-issuer.crt":"cert. version     \: 3\nserial number     \: 05\:E6\:53\:E7\:1B\:74\:F0\:B5\:D3\:84\:6D\:0C\:6D\:DC\:FA\:3F\:A4\:5A\:2B\:E0\nissuer name       \: C=JP, ST=Tokyo, O=?????????????????? Ltd, CN=?????????????????? CA\nsubject name      \: C=JP, ST=Tokyo, O=?????????????????? Ltd, CN=?????????????????? CA\nissued  on        \: 2020-05-20 16\:17\:23\nexpires on        \: 2020-06-19 16\:17\:23\nsigned using      \: RSA with SHA-256\nRSA key size      \: 2048 bits\nbasic constraints \: CA=true\n"
 
+X509 CRT information Parsing IPv4 and IPv6 IP names
+depends_on:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_cert_info:"data_files/server5-tricky-ip-san.crt.der":"cert. version     \: 3\nserial number     \: 4D\nissuer name       \: C=UK, O=Mbed TLS, CN=Mbed TLS Tricky IP SAN\nsubject name      \: C=UK, O=Mbed TLS, CN=Mbed TLS Tricky IP SAN\nissued  on        \: 2023-06-05 11\:30\:36\nexpires on        \: 2033-06-02 11\:30\:36\nsigned using      \: ECDSA with SHA256\nEC key size       \: 256 bits\nsubject alt name  \:\n    iPAddress \: 97.98.99.100\n    iPAddress \: 6162\:6364\:2E65\:7861\:6D70\:6C65\:2E63\:6F6D\n"
+
 X509 SAN parsing otherName
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_MD_CAN_SHA256
 x509_parse_san:"data_files/parse_input/server5-othername.crt":"type \: 0\notherName \: hardware module name \: hardware type \: 1.3.6.1.4.1.17.3, hardware serial number \: 313233343536\n":0
@@ -230,6 +234,10 @@
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_CAN_SHA256
 x509_parse_san:"data_files/parse_input/test_cert_rfc822name.crt.der":"type \: 1\nrfc822Name \: my@other.address\ntype \: 1\nrfc822Name \: second@other.address\n":0
 
+X509 CRT information Parsing IP (invalid data)
+depends_on:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_parse_san:"data_files/server5-tricky-ip-san-malformed-len.crt.der":"":MBEDTLS_ERR_X509_BAD_INPUT_DATA
+
 X509 CRL information #1
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_MD_CAN_SHA1:MBEDTLS_RSA_C:!MBEDTLS_X509_REMOVE_INFO
 mbedtls_x509_crl_info:"data_files/parse_input/crl_expired.pem":"CRL version   \: 1\nissuer name   \: C=NL, O=PolarSSL, CN=PolarSSL Test CA\nthis update   \: 2011-02-20 10\:24\:19\nnext update   \: 2011-02-20 11\:24\:19\nRevoked certificates\:\nserial number\: 01 revocation date\: 2011-02-12 14\:44\:07\nserial number\: 03 revocation date\: 2011-02-12 14\:44\:07\nsigned using  \: RSA with SHA1\n"
@@ -1016,32 +1024,32 @@
 x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl-futureRevocationDate.pem":"NULL":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_REVOKED:"compat":"NULL"
 
 X509 CRT verification: domain identical to IPv4 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"abcd":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"abcd":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
 
 X509 CRT verification: domain identical to IPv6 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"abcd.example.com":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_VERIFY:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"abcd.example.com":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
 
 X509 CRT verification: matching IPv4 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"97.98.99.100":0:0:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"97.98.99.100":0:0:"":"NULL"
 
 X509 CRT verification: mismatching IPv4 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"7.8.9.10":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"7.8.9.10":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
 
 X509 CRT verification: IPv4 with trailing data in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"97.98.99.100?":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"97.98.99.100?":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
 
 X509 CRT verification: matching IPv6 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"6162\:6364\:2E65\:7861\:6D70\:6C65\:2E63\:6F6D":0:0:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"6162\:6364\:2E65\:7861\:6D70\:6C65\:2E63\:6F6D":0:0:"":"NULL"
 
 X509 CRT verification: mismatching IPv6 in SubjectAltName
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
-x509_verify:"data_files/server5-tricky-ip-san.crt":"data_files/server5-tricky-ip-san.crt":"data_files/crl_sha256.pem":"6162\:6364\:\:6F6D":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
+depends_on:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
+x509_verify:"data_files/server5-tricky-ip-san.crt.der":"data_files/server5-tricky-ip-san.crt.der":"data_files/crl_sha256.pem":"6162\:6364\:\:6F6D":MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:MBEDTLS_X509_BADCERT_CN_MISMATCH:"":"NULL"
 
 X509 CRT verification: matching URI in SubjectAltName
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_PK_CAN_ECDSA_SOME:MBEDTLS_MD_CAN_SHA256:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C