[PATCH] testsuite: Fixes for test case pr117546.c

[Dimitar Dimitrov]

This test fails on AVR.

Debugging the test on x86 host, I noticed that u in function s sometimes
has value 16128.  The "t <= 3 * u" expression in the same function
results in signed integer overflow for targets with sizeof(int)=16.

Fix by requiring int32 effective target.

Also add return statement for the main function.

gcc/testsuite/ChangeLog:

        * gcc.dg/torture/pr117546.c: Require effective target int32.
        (main): Add return statement.

Ok for trunk?

Cc: Sam James <s...@gentoo.org>
Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
---
 gcc/testsuite/gcc.dg/torture/pr117546.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/torture/pr117546.c 
b/gcc/testsuite/gcc.dg/torture/pr117546.c
index 21e2aef18b9..b60f877a906 100644
--- a/gcc/testsuite/gcc.dg/torture/pr117546.c
+++ b/gcc/testsuite/gcc.dg/torture/pr117546.c
@@ -1,4 +1,4 @@
-/* { dg-do run } */
+/* { dg-do run { target int32 } } */
 
 typedef struct {
   int a;
@@ -81,4 +81,6 @@ int main() {
   l.glyf.coords[4] = (e){2, 206};
   l.glyf.coords[6] = (e){0, 308, 5};
   w(&l);
+
+  return 0;
 }
-- 
2.47.1