[patch,testsuite,applied] Fix gcc.dg/signbit-6.c for int != 32-bit targets

[Georg-Johann Lay]

This test failed on int != 32-bit targets due to
a[0] = b[0] = INT_MIN instead of using INT32_MIN.
Johann

--

    testsuite/52641 - Fix gcc.dg/signbit-6.c for int != 32-bit targets.

            PR testsuite/52641
    gcc/testsuite/
            * gcc.dg/signbit-6.c (main): Initialize a[0] and b[0]
            with INT32_MIN (instead of with INT_MIN).

diff --git a/gcc/testsuite/gcc.dg/signbit-6.c 
b/gcc/testsuite/gcc.dg/signbit-6.c
index da186624cfa..3a522893222 100644
--- a/gcc/testsuite/gcc.dg/signbit-6.c
+++ b/gcc/testsuite/gcc.dg/signbit-6.c
@@ -38,8 +38,10 @@ int main ()
   TYPE a[N];
   TYPE b[N];

-  a[0] = INT_MIN;
-  b[0] = INT_MIN;
+  /* This will invoke UB due to -INT32_MIN.  The test is supposed to pass
+     because GCC is supposed to handle this UB case in a predictable 
way.  */
+  a[0] = INT32_MIN;
+  b[0] = INT32_MIN;

   for (int i = 1; i < N; ++i)
     {