[gcc r16-9370] testsuite: prevent packing enum in vect-early-break_65.c [PR124112]

https://gcc.gnu.org/g:47635b3cbf0fc55dde4672b2e267c313fba486ae

commit r16-9370-g47635b3cbf0fc55dde4672b2e267c313fba486ae
Author: Torbjörn SVENSSON <[email protected]>
Date:   Mon Jul 20 21:31:59 2026 +0200

    testsuite: prevent packing enum in vect-early-break_65.c [PR124112]
    
    GCC might be compiled with -fshort-enum enabled by default.
    For those targets, it is important that the enum type is not packed into
    something smaller than int, or vectorization will not match.
    
    gcc/testsuite/ChangeLog:
    
            PR testsuite/124112
            * gcc.dg/vect/vect-early-break_65.c: Prevent packing enum to a
            smaller object.
    
    Signed-off-by: Torbjörn SVENSSON <[email protected]>
    (cherry picked from commit 7aa3a196148f8b35619f38020164d15e1eace7fb)

Diff:
---
 gcc/testsuite/gcc.dg/vect/vect-early-break_65.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/vect/vect-early-break_65.c b/gcc/testsuite/gcc.dg/vect/vect-early-break_65.c
index 8763a5ff04ec..366922b9dbab 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-early-break_65.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-early-break_65.c
@@ -4,7 +4,7 @@
 /* { dg-require-effective-target vect_int } */
 /* { dg-additional-options "-Ofast -fno-vect-cost-model -fdump-tree-vect-details" } */
 
-enum a { b };
+enum a { b, dummy = __INT_MAX__ };
 
 struct {
   enum a c;