(REGEX_FREE): Define to `while (0) /* empty */' rather than nothing.

Otherwise, some uses got warnings about empty if-clause.

Declare failure_stack_ptr only #ifdef REL_ALLOC.

diff --git a/lib/regex.c b/lib/regex.c
index e275c3b..7cb8da8 100644 (file)
--- a/lib/regex.c
+++ b/lib/regex.c
@@ -240,7 +240,7 @@ char *alloca ();
    destination)
 
 /* No need to do anything to free, after alloca.  */
-#define REGEX_FREE(arg)
+#define REGEX_FREE(arg) while (0) /* empty */
 
 #endif /* not REGEX_MALLOC */
 
@@ -2857,9 +2857,11 @@ re_compile_fastmap (bufp)
   unsigned char *p = pattern;
   register unsigned char *pend = pattern + size;
 
+#ifdef REL_ALLOC
   /* This holds the pointer to the failure stack, when
      it is allocated relocatably.  */
   fail_stack_elt_t *failure_stack_ptr;
+#endif
 
   /* Assume that each path through the pattern can be null until
      proven otherwise.  We set this false at the bottom of switch
@@ -3508,9 +3510,11 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
   unsigned nfailure_points_pushed = 0, nfailure_points_popped = 0;
 #endif
 
+#ifdef REL_ALLOC
   /* This holds the pointer to the failure stack, when
      it is allocated relocatably.  */
   fail_stack_elt_t *failure_stack_ptr;
+#endif
 
   /* We fill all the registers internally, independent of what we
      return, for use in backreferences.  The number here includes