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-rw-r--r--src/ctype/isdigit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ctype/isdigit.c b/src/ctype/isdigit.c
index cc8db83c..bbd228ad 100644
--- a/src/ctype/isdigit.c
+++ b/src/ctype/isdigit.c
@@ -7,6 +7,7 @@
int isdigit(int c)
{
+ SIGNAL_SAFE(0);
ASSERT_REPRESENTABLE(c, 0, UCHAR_MAX, unsigned char, EOF);
return isxdigit(c) && !isalpha(c);