GCC5/DWARFv5 Handle DW_TAG_atomic_type for C11 _Atomic type qualifier.

gdb/ChangeLog

	* c-typeprint.c (cp_type_print_method_args): Handle '_Atomic'.
	(c_type_print_modifier): Likewise.
	* dwarf2read.c (read_tag_atomic_type): New function.
	(read_type_die_1): Handle DW_TAG_atomic_type.
	* gdbtypes.c (make_atomic_type): New function.
	(recursive_dump_type): Handle TYPE_ATOMIC.
	* gdbtypes.h (enum type_flag_values): Renumber.
	(enum type_instance_flag_value): Add TYPE_INSTANCE_FLAG_ATOMIC.
	(TYPE_ATOMIC): New macro.
	(make_atomic_type): Declare.

gdb/testsuite/ChangeLog

	* gdb.dwarf2/atomic.c: New file.
	* gdb.dwarf2/atomic-type.exp: Likewise.

include/ChangeLog

	* dwarf2.def: Add DW_TAG_atomic_type.

1 files changed, 15 insertions, 0 deletions

diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 140fc6f..2abaffe 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -714,6 +714,17 @@ make_unqualified_type (struct type *type)
 			      NULL);
 }
 
+/* Make a '_Atomic'-qualified version of TYPE.  */
+
+struct type *
+make_atomic_type (struct type *type)
+{
+  return make_qualified_type (type,
+			      (TYPE_INSTANCE_FLAGS (type)
+			       | TYPE_INSTANCE_FLAG_ATOMIC),
+			      NULL);
+}
+
 /* Replace the contents of ntype with the type *type.  This changes the
    contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus
    the changes are propogated to all types in the TYPE_CHAIN.
@@ -4012,6 +4023,10 @@ recursive_dump_type (struct type *type, int spaces)
     {
       puts_filtered (" TYPE_FLAG_RESTRICT");
     }
+  if (TYPE_ATOMIC (type))
+    {
+      puts_filtered (" TYPE_FLAG_ATOMIC");
+    }
   puts_filtered ("\n");
 
   printfi_filtered (spaces, "flags");