[PATCH 15/14] Use fold_for_warn in get_atomic_generic_size

[David Malcolm]

I rebased the v2 patchkit; here's an extra patch to fix an issue
with it uncovered by a recently-added testcase (in r254990).

With the patch kit, but without this patch, g++'s
  c-c++-common/pr83059.c
fails to emit the "invalid memory model argument 6" warning.

Successfully bootstrapped&regrtested on x86_64-pc-linux-gnu, as
part of the kit.

Is this OK for trunk, assuming the rest of the kit is approved?

gcc/c-family/ChangeLog:
        * c-common.c (get_atomic_generic_size): Call fold_for_warn on the
        params before checking for INTEGER_CST.
---
 gcc/c-family/c-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
index 3438b87..ab03b7d 100644
--- a/gcc/c-family/c-common.c
+++ b/gcc/c-family/c-common.c
@@ -6720,7 +6720,7 @@ get_atomic_generic_size (location_t loc, tree function,
   /* Check memory model parameters for validity.  */
   for (x = n_param - n_model ; x < n_param; x++)
     {
-      tree p = (*params)[x];
+      tree p = fold_for_warn ((*params)[x]);
       if (TREE_CODE (p) == INTEGER_CST)
         {
          /* memmodel_base masks the low 16 bits, thus ignore any bits above
-- 
1.8.5.3