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-rw-r--r--common/message.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/common/message.c b/common/message.c
index 34e0d5b..ca087ea 100644
--- a/common/message.c
+++ b/common/message.c
@@ -104,7 +104,7 @@ p11_message_err (int errnum,
char strerr[P11_MESSAGE_MAX];
va_list va;
size_t length;
-#ifdef HAVE_STRERROR_L
+#if defined(HAVE_STRERROR_L) && defined(HAVE_USELOCALE)
locale_t loc;
#endif
@@ -118,7 +118,12 @@ p11_message_err (int errnum,
buffer[length] = 0;
snprintf (strerr, sizeof (strerr), "Unknown error %d", errnum);
-#ifdef HAVE_STRERROR_L
+ /* As strerror_r() is being deprecated in POSIX:
+ * http://austingroupbugs.net/view.php?id=655
+ * we prefer to use strerror_l() with per-thread locale
+ * argument as a thread-safe variant of strerror().
+ */
+#if defined(HAVE_STRERROR_L) && defined(HAVE_USELOCALE)
loc = uselocale ((locale_t) 0);
if (loc != NULL)
strncpy (strerr, strerror_l (errnum, loc), sizeof (strerr));