From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id BEDB53858281; Tue, 31 Oct 2023 17:14:12 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BEDB53858281
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1698772452;
	bh=3Rfiu2zSk6VSJzPtYQNeXgxjUYven96uiARVd8rAnj0=;
	h=From:To:Subject:Date:From;
	b=O/Hlj+2dJmZAkAuB2iPZwP3jzpwZtqqQ3qAbcZIqh3gfhXR76u5KyV/uc5jj9npX9
	 kNXjwUGe9GWV0oBx/otVmr7fsH+qV08tmt3QWhJj4tAxvkPUMZJrs3LyCQaE+gln5r
	 vbc4aLeBrKb6A4hP0kYEBatlOmzb0qYcrLIVEMMo=
From: "krebbel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug pch/112319] New: segfault with pch and #pragma GCC diagnostic
Date: Tue, 31 Oct 2023 17:14:12 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: pch
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: krebbel at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-112319-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112319

            Bug ID: 112319
           Summary: segfault with pch and #pragma GCC diagnostic
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: pch
          Assignee: unassigned at gcc dot gnu.org
          Reporter: krebbel at gcc dot gnu.org
  Target Milestone: ---

touch s.h
touch u.h

main.cpp:
#include "s.h"
#include "u.h"

g++ s.h
g++ -c main.cpp --save-temps
In file included from main.cpp:2:
u.h:1:9: internal compiler error: Segmentation fault
    1 | #pragma GCC diagnostic
      |         ^~~
0x1764fbf crash_signal
        /home/andreas/build/../gcc/gcc/toplev.cc:314
0x10201cd maybe_read_tokens_for_pragma_lex
        /home/andreas/build/../gcc/gcc/cp/parser.cc:49713
0x10201cd pragma_lex(tree_node**, unsigned int*)
        /home/andreas/build/../gcc/gcc/cp/parser.cc:49735
0x11a962c pragma_diagnostic_lex
        /home/andreas/build/../gcc/gcc/c-family/c-pragma.cc:851
0x11a9d78 handle_pragma_diagnostic_impl<true, true>
        /home/andreas/build/../gcc/gcc/c-family/c-pragma.cc:879
0x11a9d78 handle_pragma_diagnostic_early_pp
        /home/andreas/build/../gcc/gcc/c-family/c-pragma.cc:1039
0x11abdbd c_pp_invoke_early_pragma_handler(unsigned int)
        /home/andreas/build/../gcc/gcc/c-family/c-pragma.cc:1769
0x11a8180 token_streamer::stream(cpp_reader*, cpp_token const*, unsigned in=
t)
        /home/andreas/build/../gcc/gcc/c-family/c-ppoutput.cc:293
0x11a8461 scan_translation_unit
        /home/andreas/build/../gcc/gcc/c-family/c-ppoutput.cc:351
0x11a8461 preprocess_file(cpp_reader*)
        /home/andreas/build/../gcc/gcc/c-family/c-ppoutput.cc:106
0x11a693d c_common_init()
        /home/andreas/build/../gcc/gcc/c-family/c-opts.cc:1236
0xfa35be cxx_init()
        /home/andreas/build/../gcc/gcc/cp/lex.cc:338
0xe94153 lang_dependent_init
        /home/andreas/build/../gcc/gcc/toplev.cc:1816
0xe94153 do_compile
        /home/andreas/build/../gcc/gcc/toplev.cc:2111
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Can be reproduced on x86 and s390x since:

e664ea960a200aac88ffc3c7fb9fe55ea4df2011 is the first bad commit=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
commit e664ea960a200aac88ffc3c7fb9fe55ea4df2011=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Author: Lewis Hyatt <lhyatt@gmail.com>=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20
Date:   Fri Jun 30 18:23:24 2023 -0400=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20

    c-family: Implement pragma_lex () for preprocess-only mode=