diagnostics: enable nested diagnostics by default [PR116253]

In GCC 15 I added an experimental nesting view in text sinks
for hierarchical diagnostics, such as C++ template problems.

This patch enables it for text sinks by default.  The old
behavior can be restored via -fno-diagnostics-show-nesting,
which the patch also adds to -fdiagnostics-plain-output.

The patch does not yet enable it for text sinks in sarif-replay.

gcc/ChangeLog:
	PR diagnostics/116253
	* common.opt (fdiagnostics-show-nesting): New option.
	(fdiagnostics-show-nesting-locations): New option.
	(fdiagnostics-show-nesting-levels): New option.
	* common.opt.urls: Regenerate.
	* diagnostics/context.cc (context::set_show_nesting): New.
	(context::set_show_nesting_locations): New.
	(context::set_show_nesting_levels): New.
	* diagnostics/context.h (context::set_show_nesting): New decl.
	(context::set_show_nesting_locations): New decl.
	(context::set_show_nesting_levels): New decl.
	* diagnostics/html-sink.cc: Tweak comment.
	* diagnostics/output-spec.cc (text_scheme_handler::make_sink):
	Rename "experimental-nesting" to "show-nesting" and enable by
	default.  Rename "experimental-nesting-show-locations" to
	"show-nesting-locations".  Rename
	"experimental-nesting-show-levels" to "show-nesting-levels".
	* diagnostics/sink.h (sink::dyn_cast_text_sink): New.
	* diagnostics/text-sink.h (text_sink::dyn_cast_text_sink): New.
	* doc/invoke.texi: Add -fdiagnostics-show-nesting,
	-fdiagnostics-show-nesting-locations, and
	-fdiagnostics-show-nesting-levels.  Update for changes to
	output-spec.cc above.
	* lto-wrapper.cc (merge_and_complain): Ignore
	OPT_fdiagnostics_show_nesting,
	OPT_fdiagnostics_show_nesting_locations, and
	OPT_fdiagnostics_show_nesting_levels.
	(append_compiler_options): Likewise.
	(append_diag_options): Likewise.
	* opts-common.cc (decode_cmdline_options_to_array): Add
	"-fno-diagnostics-show-nesting" to -fdiagnostics-plain-output.
	* opts.cc (common_handle_option): Handle the new options.
	(gen_command_line_string): Ignore the new options.
	* toplev.cc (general_init): Call set_show_nesting,
	set_show_nesting_locations, and set_show_nesting_levels on
	global_dc.

gcc/testsuite/ChangeLog:
	PR diagnostics/116253
	* g++.dg/concepts/nested-diagnostics-1-truncated.C: Update for
	renamed keys to -fdiagnostics-set-output=text
	* g++.dg/concepts/nested-diagnostics-1.C: Likewise.
	* g++.dg/concepts/nested-diagnostics-2.C: Likewise.
	* gcc.dg/plugin/diagnostic-test-nesting-no-show-nesting.c: New
	test.
	* gcc.dg/plugin/diagnostic-test-nesting-show-nesting.c: New test.
	* gcc.dg/plugin/diagnostic-test-nesting-text-indented-show-levels.c:
	Update for renamed keys to -fdiagnostics-set-output=text.
	* gcc.dg/plugin/diagnostic-test-nesting-text-indented-unicode.c:
	Likewise.
	* gcc.dg/plugin/diagnostic-test-nesting-text-indented.c: Likewise.
	* gcc.dg/plugin/plugin.exp: Add the new tests.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

0 files changed, 0 insertions, 0 deletions