It's been inconvenient to compile testcases preprocessed with GCC 12 or
earlier because they break on
typedef __float128 _Float128;
We already had code for handling this with bool and wchar_t, it just needs
to be extended to _FloatNN as well.
PR c++/107128
gcc/cp/ChangeLog:
* parser.cc (cp_parser_set_decl_spec_type): Use
redefined_builtin_type for extended_float_type_p.
gcc/testsuite/ChangeLog:
* g++.dg/warn/pragma-system_header6.h: New test.
* g++.dg/warn/pragma-system_header6.C: New test.
C++-safe. */
if (decl_spec_seq_has_spec_p (decl_specs, ds_typedef)
&& !type_definition_p
+ && TYPE_P (type_spec)
&& (type_spec == boolean_type_node
|| type_spec == char8_type_node
|| type_spec == char16_type_node
|| type_spec == char32_type_node
+ || extended_float_type_p (type_spec)
|| type_spec == wchar_type_node)
&& (decl_specs->type
|| decl_spec_seq_has_spec_p (decl_specs, ds_long)
--- /dev/null
+#include "pragma-system_header6.h"
--- /dev/null
+#pragma GCC system_header
+
+typedef float _Float32;