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-rw-r--r--src/ctype/iscntrl.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ctype/iscntrl.c b/src/ctype/iscntrl.c
index 83c52e1c..454da1b6 100644
--- a/src/ctype/iscntrl.c
+++ b/src/ctype/iscntrl.c
@@ -8,6 +8,7 @@ int iscntrl(int c)
{
unsigned int *map = __get_locale()->lc_ctype.ctattr;
+ SIGNAL_SAFE(0);
ASSERT_REPRESENTABLE(c, 0, UCHAR_MAX, unsigned char, EOF);
return c == EOF ? 0 : map[c] & CT_CNTRL;