[glibc/azanella/clang] misc: Disable some atomic tests on clang

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=701018065d2fa074a274650e8c637dc87d51a149

commit 701018065d2fa074a274650e8c637dc87d51a149
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Fri Mar 25 11:22:44 2022 -0300

    misc: Disable some atomic tests on clang
    
    clang warns on some atomic macros, disable for now:
    
      tst-atomic.c:463:7: error: unsupported inline asm: input with type
      'int64_t' (aka 'long') matching output with type 'typeof (*&mem)' (aka
      'int')
        if (catomic_exchange_and_add (&mem, 11) != 2
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:213:3: note: expanded from macro
      'catomic_exchange_and_add'
        __arch_exchange_and_add_body (__arch_exchange_and_add_cprefix,
      __arch_c,    \
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:199:12: note: expanded from macro
      '__arch_exchange_and_add_body'
                               : "0" ((int64_t) cast_to_integer (__addval)),
      \
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      tst-atomic.c:487:7: error: unsupported inline asm: input with type
      'int64_t' (aka 'long') matching output with type 'typeof (*(&mem))' (aka
      'int')
        if (catomic_increment_val (&mem) != 3)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../include/atomic.h:313:38: note: expanded from macro
      'catomic_increment_val'
      # define catomic_increment_val(mem) (catomic_exchange_and_add ((mem), 1)
      + 1)
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:213:3: note: expanded from macro
      'catomic_exchange_and_add'
        __arch_exchange_and_add_body (__arch_exchange_and_add_cprefix,
      __arch_c,    \
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:199:12: note: expanded from macro
      '__arch_exchange_and_add_body'
                               : "0" ((int64_t) cast_to_integer (__addval)),
      \
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      tst-atomic.c:501:7: error: unsupported inline asm: input with type
      'int64_t' (aka 'long') matching output with type 'typeof (*(&mem))' (aka
      'int')
        if (catomic_decrement_val (&mem) != 15)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../include/atomic.h:340:38: note: expanded from macro
      'catomic_decrement_val'
      # define catomic_decrement_val(mem) (catomic_exchange_and_add ((mem),
      -1) - 1)
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:213:3: note: expanded from macro
      'catomic_exchange_and_add'
        __arch_exchange_and_add_body (__arch_exchange_and_add_cprefix,
      __arch_c,    \
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../sysdeps/x86/atomic-machine.h:199:12: note: expanded from macro
      '__arch_exchange_and_add_body'
                               : "0" ((int64_t) cast_to_integer (__addval)),
      \
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Diff:
---
 misc/tst-atomic.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/misc/tst-atomic.c b/misc/tst-atomic.c
index 6d681a7bfd..2212ef66ce 100644
--- a/misc/tst-atomic.c
+++ b/misc/tst-atomic.c
@@ -459,6 +459,7 @@ do_test (void)
       ret = 1;
     }
 
+#ifndef __clang__
   mem = 2;
   if (catomic_exchange_and_add (&mem, 11) != 2
       || mem != 13)
@@ -466,6 +467,7 @@ do_test (void)
       puts ("catomic_exchange_and_add test failed");
       ret = 1;
     }
+#endif
 
   mem = -21;
   catomic_add (&mem, 22);
@@ -483,12 +485,14 @@ do_test (void)
       ret = 1;
     }
 
+#ifndef __clang__
   mem = 2;
   if (catomic_increment_val (&mem) != 3)
     {
       puts ("catomic_increment_val test failed");
       ret = 1;
     }
+#endif
 
   mem = 17;
   catomic_decrement (&mem);
@@ -498,11 +502,13 @@ do_test (void)
       ret = 1;
     }
 
+#ifndef __clang__
   if (catomic_decrement_val (&mem) != 15)
     {
       puts ("catomic_decrement_val test failed");
       ret = 1;
     }
+#endif
 
   /* Tests for C11-like atomics.  */
   mem = 11;