[committed] Fix gnu23-builtins-no-dfp

[Jeff Law]

Last patch for the night.  There's still a bit of minor fallout left in 
GCC (loongarch testsuite for example).  But things are looking good on 
the targets I test.  The plan is to start submitting the various 
newlib/libgloss fixes tomorrow.

Anyway, this test was the one I was most concerned about.  Basically 
we're testing that on a !dfp target that the builtins are not available. 
 It expects a warning, but gets an error by default now.  I just 
changed the test to use -fpermissive, so that the test behaves as it did 
previously.

Pushed to the trunk.
Jeffcommit f37744662cbc74efcceb790b99dcd6521c51a578
Author: Jeff Law <j...@ventanamicro.com>
Date:   Sat Dec 2 22:54:46 2023 -0700

    [committed] Fix gnu23-builtins-no-dfp
    
    Last patch for the night.  There's still a bit of minor fallout left in GCC
    (loongarch testsuite for example).  But things are looking good on the 
targets
    I test.  The plan is to start submitting the various newlib/libgloss fixes
    tomorrow.
    
    Anyway, this test was the one I was most concerned about.  Basically we're
    testing that on a !dfp target that the builtins are not available.  It 
expects
    a warning, but gets an error by default now.  I just changed the test to use
    -fpermissive, so that the test behaves as it did previously.
    
    Pushed to the trunk.
    
    gcc/testsuite
            * gcc.dg/gnu23-builtins-no-dfp-1.c: Add -fpermissive.

diff --git a/gcc/testsuite/gcc.dg/gnu23-builtins-no-dfp-1.c 
b/gcc/testsuite/gcc.dg/gnu23-builtins-no-dfp-1.c
index 9fa25f0dd13..8fe4efbdd98 100644
--- a/gcc/testsuite/gcc.dg/gnu23-builtins-no-dfp-1.c
+++ b/gcc/testsuite/gcc.dg/gnu23-builtins-no-dfp-1.c
@@ -1,7 +1,7 @@
 /* Test C23 built-in functions: test DFP built-in functions are not
    available when no DFP support.  Bug 91985.  */
 /* { dg-do compile { target { ! dfp } } } */
-/* { dg-options "-std=gnu23" } */
+/* { dg-options "-std=gnu23 -fpermissive" } */
 
 int fabsd32 (void);
 int fabsd64 (void);