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-rw-r--r--libc/misc/regex/regcomp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/misc/regex/regcomp.c b/libc/misc/regex/regcomp.c
index b15109c93..419d879be 100644
--- a/libc/misc/regex/regcomp.c
+++ b/libc/misc/regex/regcomp.c
@@ -292,7 +292,7 @@ re_set_fastmap (char *fastmap, int icase, int ch)
{
fastmap[ch] = 1;
if (icase)
- fastmap[tolower (ch)] = 1;
+ fastmap[__tolower (ch)] = 1;
}
/* Helper function for re_compile_fastmap.