fixed strerror_r: it's more sensible to restore the old errno value!

1 files changed, 2 insertions, 1 deletions

diff --git a/src/port/string.c b/src/port/string.c
index cd6a93f..e05dfbd 100644
--- a/src/port/string.c
+++ b/src/port/string.c
@@ -48,6 +48,7 @@ char *wolf_port_strdup( const char *s ) {
 #include <errno.h>		/* for errno */
 
 int wolf_port_strerror_r( int num, char *buf, size_t buflen ) {
+	int safe_errno = errno;
 	const char *msg;
 
 	msg = strerror( num );
@@ -64,7 +65,7 @@ int wolf_port_strerror_r( int num, char *buf, size_t buflen ) {
 	}
 
 	strncpy( buf, msg, buflen-1 );
-	errno = 0;
+	errno = safe_errno;
 	return 0;
 }