1 files changed, 5 insertions, 5 deletions

diff --git a/src/regex.c b/src/regex.c
index faa645cdd28..75f7de34646 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -3311,15 +3311,15 @@ regex_compile (const_re_char *pattern, size_t size, reg_syntax_t syntax,
                 GET_INTERVAL_COUNT (lower_bound);
 
                 if (c == ',')
-                  {
-                    GET_INTERVAL_COUNT (upper_bound);
-                    if (upper_bound < lower_bound)
-                      FREE_STACK_RETURN (REG_BADBR);
-                  }
+                  GET_INTERVAL_COUNT (upper_bound);
                 else
                   /* Interval such as `{1}' => match exactly once. */
                   upper_bound = lower_bound;
 
+                if (lower_bound < 0
+                    || (0 <= upper_bound && upper_bound < lower_bound))
+                  FREE_STACK_RETURN (REG_BADBR);
+
                 if (!(syntax & RE_NO_BK_BRACES))
                   {
                     if (c != '\\')