diff -rupN --no-dereference gcc-12.0.1-20220308/config/intdiv0.m4 gcc-12.0.1-20220308-new/config/intdiv0.m4

--- gcc-12.0.1-20220308/config/intdiv0.m4	2022-03-08 12:23:45.000000000 +0100

+++ gcc-12.0.1-20220308-new/config/intdiv0.m4	2022-03-11 16:00:24.564943437 +0100

@@ -31,10 +31,10 @@ sigfpe_handler (sig) int sig;

   exit (sig != SIGFPE);

 }

-int x = 1;

-int y = 0;

-int z;

-int nan;

+volatile int x = 1;

+volatile int y = 0;

+volatile int z;

+volatile int nan;

 int main ()

 {

diff -rupN --no-dereference gcc-12.0.1-20220308/libiberty/acinclude.m4 gcc-12.0.1-20220308-new/libiberty/acinclude.m4

--- gcc-12.0.1-20220308/libiberty/acinclude.m4	2022-03-08 12:23:45.000000000 +0100

+++ gcc-12.0.1-20220308-new/libiberty/acinclude.m4	2022-03-11 16:00:24.564943437 +0100

@@ -157,7 +157,7 @@ if test $ac_cv_os_cray = yes; then

 fi

 AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,

-[AC_TRY_RUN([find_stack_direction ()

+[AC_TRY_RUN([__attribute__ ((noclone,noinline)) find_stack_direction ()

 {

   static char *addr = 0;

   auto char dummy;