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-rw-r--r--posix/regcomp.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 4f53944709..33ca7c91e1 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -2560,6 +2560,8 @@ build_range_exp (sbcset, start_elem, end_elem)
? __btowc (start_ch) : start_elem->opr.wch);
end_wc = ((end_elem->type == SB_CHAR || end_elem->type == COLL_SYM)
? __btowc (end_ch) : end_elem->opr.wch);
+ if (start_wc == WEOF || end_wc == WEOF)
+ return REG_ECOLLATE;
cmp_buf[0] = start_wc;
cmp_buf[4] = end_wc;
if (wcscoll (cmp_buf, cmp_buf + 4) > 0)