[Bug bootstrap/97451] New: [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[Bug bootstrap/97451] New: [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

            Bug ID: 97451
           Summary: [11 Regression] r11-3959 failed
                    --with-build-config=bootstrap-cet
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

On Linux/x86-64 with binutils 20201014 master branch, r11-3959 failed to
bootstrap when configured with

--enable-cet --with-demangler-in-ld  --prefix=/usr/gcc-11.0.0-cet-x32
--with-local-prefix=/usr/local --enable-gnu-indirect-function
--enable-clocale=gnu --with-system-zlib --with-target-system-zlib
--with-fpmath=sse --with-multilib-list=m32,m64,mx32 --enable-linker-build-id
--enable-gnu-unique-object --with-build-config=bootstrap-cet
--with-multilib-list=m64,mx32,m32
--enable-languages=c,c++,fortran,lto,objc,obj-c++,go

Bootstrap comparison failure!
libiberty/lbasename.o differs
x86_64-pc-linux-gnu/32/libstdc++-v3/libsupc++/eh_globals.o differs
x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/eh_globals.o differs
x86_64-pc-linux-gnu/x32/libstdc++-v3/libsupc++/eh_globals.o differs
make[4]: *** [Makefile:23878: compare] Error 1

[hjl@gnu-skx-1 build-x86_64-linux]$ cmp --ignore-initial=16
stage2-libiberty/lbasename.o stage3-libiberty/lbasename.o
stage2-libiberty/lbasename.o stage3-libiberty/lbasename.o differ: byte 965,
line 2
[hjl@gnu-skx-1 build-x86_64-linux]$ readelf -w stage2-libiberty/lbasename.o
...
The Directory Table (offset 0x1c):
  1     /tmp
  2     /export/gnu/import/git/sources/gcc/libiberty
  3     /export/gnu/import/git/sources/gcc/libiberty/../include

 The File Name Table (offset 0x87):
  Entry Dir     Time    Size    Name
  1     2       0       0       lbasename.c
  2     3       0       0       safe-ctype.h
  3     1       0       0       cccS9GKD.s
                                This seems to come from assembly file.

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
The problem is triggered by missing config/bootstrap-debug.mk.  But
cccS9GKD.s is is odd.

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://sourceware.org/bugz
                   |                            |illa/show_bug.cgi?id=26740
                 CC|                            |jakub at redhat dot com

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
This is triggered by r11-3693:

commit 6923255e35a3d54f2083ad0f67edebb3f1b86506
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Oct 7 10:55:35 2020 +0200

    debug: Pass --gdwarf-N to assembler if fixed gas is detected during
configure

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |build
   Target Milestone|---                         |11.0

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |danglin at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 97355 has been marked as a duplicate of this bug. ***

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2020-10-16
           Assignee|unassigned at gcc dot gnu.org      |hjl.tools at gmail dot com
     Ever confirmed|0                           |1

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 49389
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49389&action=edit
A patch

I am testing this patch.

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #4)
> Created attachment 49389 [details]
> A patch
> 
> I am testing this patch.

It works:

https://gcc.gnu.org/pipermail/gcc-patches/2020-October/556394.html

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:1aeb7d7d67d167297ca2f4a97ef20f68e7546b4c

commit r11-4338-g1aeb7d7d67d167297ca2f4a97ef20f68e7546b4c
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Oct 16 05:59:51 2020 -0700

    Update check for working assembler --gdwarf-4 option

    Rename HAVE_AS_WORKING_DWARF_4_FLAG to HAVE_AS_WORKING_DWARF_N_FLAG
    Don't set HAVE_AS_WORKING_DWARF_N_FLAG if --gdwarf-5/--gdwarf-4 generate
    an extra assembly input file in debug info from compiler generated
    .debug_line or fail with the APP marker:

    https://sourceware.org/bugzilla/show_bug.cgi?id=25878
    https://sourceware.org/bugzilla/show_bug.cgi?id=26740
    https://sourceware.org/bugzilla/show_bug.cgi?id=26778

    Also replace success with dwarf4_success in the 32-bit --gdwarf-4 check.

            PR bootstrap/97451
            * configure.ac (HAVE_AS_WORKING_DWARF_4_FLAG): Renamed to ...
            (HAVE_AS_WORKING_DWARF_N_FLAG): This.  Don't define if there is
            an extra assembly input file in debug info.  Replace success
            with dwarf4_success in the 32-bit --gdwarf-4 check.
            * dwarf2out.c (asm_outputs_debug_line_str): Check
            HAVE_AS_WORKING_DWARF_N_FLAG instead of
            HAVE_AS_WORKING_DWARF_4_FLAG.
            * gcc.c (ASM_DEBUG_SPEC): Likewise.
            (ASM_DEBUG_OPTION_SPEC): Likewise.
            * config.in: Regenerated.
            * configure: Likewise.

[Bug bootstrap/97451] [11 Regression] r11-3959 failed --with-build-config=bootstrap-cet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97451

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.