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-rw-r--r--src/ctype/isascii.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/ctype/isascii.c b/src/ctype/isascii.c
index 2543b224..8807bea2 100644
--- a/src/ctype/isascii.c
+++ b/src/ctype/isascii.c
@@ -11,6 +11,8 @@ int isascii(int c)
return 0;
}
+__check_1(int, 0, isascii, int)
+
/***
tests whether ARGUMENT(c) is a 7-bit US-ASCII character.
***/