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-rw-r--r--posix/regex.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/posix/regex.c b/posix/regex.c
index 5f8e38c791..ba01f73508 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -2210,10 +2210,13 @@ regex_compile (pattern, size, syntax, bufp)
for (;;)
{
PATFETCH (c);
- if ((c == ':' && *p == ']') || p == pend
- || c1 == CHAR_CLASS_MAX_LENGTH)
+ if ((c == ':' && *p == ']') || p == pend)
break;
- str[c1++] = c;
+ if (c1 < CHAR_CLASS_MAX_LENGTH)
+ str[c1++] = c;
+ else
+ /* This is in any case an invalid class name. */
+ str[0] = '\0';
}
str[c1] = '\0';