(GROW_FAIL_STACK): Fix test for stack size at max.

diff --git a/regex.c b/regex.c
index 6c79ba8..7efb934 100644 (file)
--- a/regex.c
+++ b/regex.c
@@ -1205,7 +1205,8 @@ typedef struct
 #define FAIL_STACK_GROWTH_FACTOR 4
 
 #define GROW_FAIL_STACK(fail_stack)                                    \
-  ((fail_stack).size >= re_max_failures * TYPICAL_FAILURE_SIZE         \
+  (((fail_stack).size * sizeof (fail_stack_elt_t)                      \
+    >= re_max_failures * TYPICAL_FAILURE_SIZE)                         \
    ? 0                                                                 \
    : ((fail_stack).stack                                               \
       = (fail_stack_elt_t *)                                           \