Merge pull request #3421 from niacat/posix_c_source
Define _POSIX_C_SOURCE to be 200112L, as a minimum for C99.
diff --git a/ChangeLog.d/bugfix_PR3421.txt b/ChangeLog.d/bugfix_PR3421.txt
new file mode 100644
index 0000000..b52dee0
--- /dev/null
+++ b/ChangeLog.d/bugfix_PR3421.txt
@@ -0,0 +1,2 @@
+Bugfix
+ * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and fix submitted in #3421 by Nia Alarie.
diff --git a/programs/aes/aescrypt2.c b/programs/aes/aescrypt2.c
index f17c641..b0c1fea 100644
--- a/programs/aes/aescrypt2.c
+++ b/programs/aes/aescrypt2.c
@@ -22,7 +22,7 @@
/* Enable definition of fileno() even when compiling with -std=c99. Must be
* set before config.h, which pulls in glibc's features.h indirectly.
* Harmless on other platforms. */
-#define _POSIX_C_SOURCE 1
+#define _POSIX_C_SOURCE 200112L
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index 1e03d43..5c70480 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -23,7 +23,7 @@
/* Enable definition of fileno() even when compiling with -std=c99. Must be
* set before config.h, which pulls in glibc's features.h indirectly.
* Harmless on other platforms. */
-#define _POSIX_C_SOURCE 1
+#define _POSIX_C_SOURCE 200112L
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
diff --git a/tests/suites/main_test.function b/tests/suites/main_test.function
index af4b84e..75656a8 100644
--- a/tests/suites/main_test.function
+++ b/tests/suites/main_test.function
@@ -21,7 +21,7 @@
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#if !defined(_POSIX_C_SOURCE)
-#define _POSIX_C_SOURCE 1 // for fileno() from <stdio.h>
+#define _POSIX_C_SOURCE 200112L // for fileno() from <stdio.h>
#endif
#endif