1 files changed, 2 insertions, 1 deletions

diff --git a/src/regex.c b/src/regex.c
index 32991346399..7967a481ae9 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -2939,7 +2939,8 @@ regex_compile (pattern, size, syntax, bufp)
                         for (ch = 0; ch < 1 << BYTEWIDTH; ++ch)
                           {
                             int translated = TRANSLATE (ch);
-                            if (re_iswctype (btowc (ch), cc))
+                            if (translate < 1 << BYTEWIDTH
+                                && re_iswctype (btowc (ch), cc))
                               SET_LIST_BIT (translated);
                           }