[gcc r17-3828] Fix sloppy PR121468 test

[Georg-Johann Lay]

https://gcc.gnu.org/g:9f27f4b1cd94df786f9e88173e4276151ce86362

commit r17-3828-g9f27f4b1cd94df786f9e88173e4276151ce86362
Author: Georg-Johann Lay <avr@gjlay.de>
Date:   Tue Sep 1 19:28:10 2026 +0200

    Fix sloppy PR121468 test
    
    gcc.dg/pr121468.c failed with:
    
    FAIL: gcc.dg/pr121468.c (test for excess errors)
    Excess errors:
    gcc.dg/pr121468.c:17:9: warning: overflow in conversion from 'long int' to 'int' changes value from '2147483647' to '-1' [-Woverflow]
    gcc.dg/pr121468.c:19:9: warning: overflow in conversion from 'long int' to 'int' changes value from '2147483646' to '-2' [-Woverflow]
    
    in the assumptions that the assigned vars are int32plus.
    
    gcc/testsuite/
            PR testsuite/121468
            * gcc.dg/pr121468.c: Use __INT32_TYPE__ for variables that
            obviously require int32plus.

Diff:
---
 gcc/testsuite/gcc.dg/pr121468.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/pr121468.c b/gcc/testsuite/gcc.dg/pr121468.c
index 07df274be834..1e1e05968500 100644
--- a/gcc/testsuite/gcc.dg/pr121468.c
+++ b/gcc/testsuite/gcc.dg/pr121468.c
@@ -1,10 +1,10 @@
 /* { dg-do compile } */
 /* { dg-options "-Os" } */
-int e, f, n;
+__INT32_TYPE__ e, f, n;
 static int a () { return e; }
 void b () { while (a()); }
 static int d () { return e; }
-static void g (int h) {
+static void g (__INT32_TYPE__ h) {
   if (e)
   c:
     if (d())