[gcc r12-5770] testsuite: Fix up pr103456.c testcase [PR103456]

[gcc r12-5770] testsuite: Fix up pr103456.c testcase [PR103456]

[Jakub Jelinek]

https://gcc.gnu.org/g:97ffef3553267f52ca83dbebdcc8b5e3739febee

commit r12-5770-g97ffef3553267f52ca83dbebdcc8b5e3739febee
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Dec 3 12:09:04 2021 +0100

    testsuite: Fix up pr103456.c testcase [PR103456]
    
    ubsan.exp cycles through torture options, and that includes
    -O2 -flto -fno-fat-lto-objects.  But with those options
    tree dump scans don't work for post-IPA passes, for dg-do
    compile tests nothing after IPA is done.  So we get an
    unresolved testcase:
    gcc.dg/ubsan/pr103456.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  : dump file does not exist
    UNRESOLVED: gcc.dg/ubsan/pr103456.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects   scan-tree-dump-not objsz1 "maximum object size 0"
    
    Fixed by adding -ffat-lto-objects so that we perform the post-IPA
    passes.
    
    2021-12-03  Jakub Jelinek  <jakub@redhat.com>
    
            PR tree-optimization/103456
            * gcc.dg/ubsan/pr103456.c: Add -ffat-lto-objects to dg-options.

Diff:
---
 gcc/testsuite/gcc.dg/ubsan/pr103456.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/ubsan/pr103456.c b/gcc/testsuite/gcc.dg/ubsan/pr103456.c
index 20322fbaab1..7624fa87093 100644
--- a/gcc/testsuite/gcc.dg/ubsan/pr103456.c
+++ b/gcc/testsuite/gcc.dg/ubsan/pr103456.c
@@ -1,6 +1,6 @@
 /* PR tree-optimization/103456 */
 /* { dg-do compile } */
-/* { dg-options "-fsanitize=undefined -O -fdump-tree-objsz" } */
+/* { dg-options "-fsanitize=undefined -O -fdump-tree-objsz -ffat-lto-objects" } */
 
 static char *multilib_options = "m64/m32";