[gcc r14-6751] c-family: Use -Wdiscarded-qualifiers for ignored qualifiers in __atomic_*

[Florian Weimer]

https://gcc.gnu.org/g:a48dd581bf917fcd52fb9eab60943825ed96b6d4

commit r14-6751-ga48dd581bf917fcd52fb9eab60943825ed96b6d4
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Dec 20 17:23:40 2023 +0100

    c-family: Use -Wdiscarded-qualifiers for ignored qualifiers in __atomic_*
    
    This matches other compiler diagnostics.  No test updates are needed
    because c-c++-common/pr95378.c does not match a specific -W option.
    
    Fixes commit d2384b7b24f8557b66f6958a05ea99ff4307e75c ("c-family:
    check qualifiers of arguments to __atomic built-ins (PR 95378)").
    
    gcc/c-family/
    
            PR c/113050
            * c-common.cc (get_atomic_generic_size): Use
            OPT_Wdiscarded_qualifiers instead of
            OPT_Wincompatible_pointer_types.

Diff:
---
 gcc/c-family/c-common.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/c-family/c-common.cc b/gcc/c-family/c-common.cc
index 0f1de44a348..6ea727f446f 100644
--- a/gcc/c-family/c-common.cc
+++ b/gcc/c-family/c-common.cc
@@ -7637,7 +7637,7 @@ get_atomic_generic_size (location_t loc, tree function,
 		return 0;
 	      }
 	    else
-	      pedwarn (loc, OPT_Wincompatible_pointer_types, "argument %d "
+	      pedwarn (loc, OPT_Wdiscarded_qualifiers, "argument %d "
 		       "of %qE discards %<const%> qualifier", x + 1,
 		       function);
 	  }
@@ -7651,7 +7651,7 @@ get_atomic_generic_size (location_t loc, tree function,
 		return 0;
 	      }
 	    else
-	      pedwarn (loc, OPT_Wincompatible_pointer_types, "argument %d "
+	      pedwarn (loc, OPT_Wdiscarded_qualifiers, "argument %d "
 		       "of %qE discards %<volatile%> qualifier", x + 1,
 		       function);
 	  }