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-rw-r--r--lib/libcompat/4.3/regex.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libcompat/4.3/regex.c b/lib/libcompat/4.3/regex.c
index f89c32c6d7c7..89d6400b8d7d 100644
--- a/lib/libcompat/4.3/regex.c
+++ b/lib/libcompat/4.3/regex.c
@@ -59,7 +59,7 @@ char *
re_comp(s)
char *s;
{
- if (s == NULL)
+ if (s == NULL || *s == '\0')
return (NULL);
if (re_regexp)
free(re_regexp);