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-rw-r--r--src/stdlib/wctomb.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/stdlib/wctomb.c b/src/stdlib/wctomb.c
index ce4c8e82..d1de2dd8 100644
--- a/src/stdlib/wctomb.c
+++ b/src/stdlib/wctomb.c
@@ -6,6 +6,7 @@
int wctomb(char * s, wchar_t wchar)
{
SIGNAL_SAFE(0);
+ ASSERT_CTYPE(s);
/* FIXME: forward dependency on AMD1 */
#if 0