[Bug c++/98232] New: [9 branch] [regression] ICE when compiling libreoffice

[Bug c++/98232] New: [9 branch] [regression] ICE when compiling libreoffice

[me at hussam dot eu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

            Bug ID: 98232
           Summary: [9 branch] [regression] ICE when compiling libreoffice
           Product: gcc
           Version: 9.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: me at hussam dot eu.org
  Target Milestone: ---

this worked in the 20201120 snapshot and broke in the 20201127 snapshot.

[CXX] vcl/workben/vcldemo.cxx
/home/hussam/cache/system/libreoffice/src/libreoffice/vcl/workben/vcldemo.cxx:
In destructor ‘virtual {anonymous}::DemoWin::RenderThread::~RenderThread()’:
/home/hussam/cache/system/libreoffice/src/libreoffice/vcl/workben/vcldemo.cxx:1726:18:
internal compiler error: Segmentation fault
 1726 |             join();


I don't know what other information to provide.
Let me know please.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[9 branch] [regression] ICE |[9 Regression] ICE when
                   |when compiling libreoffice  |compiling libreoffice
   Last reconfirmed|                            |2020-12-11
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |WAITING
      Known to work|                            |9.3.0
      Known to fail|                            |9.3.1
     Ever confirmed|0                           |1
           Priority|P3                          |P1
   Target Milestone|---                         |9.4

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please provide preprocessed source of vcldemo.cxx and the G++ command-line
options used as well as the host/target you are compiling on/for.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[ht990332 at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #2 from Hussam Al-Tayeb <ht990332 at gmx dot com> ---
(In reply to Richard Biener from comment #1)
> Please provide preprocessed source of vcldemo.cxx and the G++ command-line
> options used as well as the host/target you are compiling on/for.

Can you please instruct me on how to do so?
Thank you.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Run build system with in a verbose mode (V=1 or VERBOSE=1), or so.
And then for the problematic TU do -E, which will save pre-processed source
file instead of the object file.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[ht990332 at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #4 from Hussam Al-Tayeb <ht990332 at gmx dot com> ---
(In reply to Martin Liška from comment #3)
> Run build system with in a verbose mode (V=1 or VERBOSE=1), or so.
> And then for the problematic TU do -E, which will save pre-processed source
> file instead of the object file.

Can you please tell me what to type for -E? And what is a TU?

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[ht990332 at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #5 from Hussam Al-Tayeb <ht990332 at gmx dot com> ---
I also found this https://bugzilla.redhat.com/show_bug.cgi?id=1858036

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Hussam Al-Tayeb from comment #4)
> (In reply to Martin Liška from comment #3)
> > Run build system with in a verbose mode (V=1 or VERBOSE=1), or so.
> > And then for the problematic TU do -E, which will save pre-processed source
> > file instead of the object file.
> 
> Can you please tell me what to type for -E? And what is a TU?

You need to display full command line where vcl/workben/vcldemo.cxx is
compiler.
In order to do that do: make V=1 VERBOSE=1

then take the command line and append '-E'.
And attach pre-processed source file that will be in '-o xxxx.o' file.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[ht990332 at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #7 from Hussam Al-Tayeb <ht990332 at gmx dot com> ---
The patch in bug 95719 fixes the ICE. Can you please backport it to the gcc-9
branch?
Also we need some methodology for followup patches so they are marked as
candidates for stable branches as well.

In this case https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=0ddb93ce77374004 is
the initial patch which was applied to 10 and 9 branches.
The a followup patch
https://gcc.gnu.org/g:554eb7d2e1ef5660d6a8e1c12ee1d751a70bbf31 was only applied
in gcc-10 branch but not gcc-9 branch.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[ht990332 at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

--- Comment #8 from Hussam Al-Tayeb <ht990332 at gmx dot com> ---
(In reply to Hussam Al-Tayeb from comment #7)
> The patch in bug 95719 fixes the ICE. Can you please backport it to the
> gcc-9 branch?
> Also we need some methodology for followup patches so they are marked as
> candidates for stable branches as well.
> 
> In this case https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=0ddb93ce77374004
> is the initial patch which was applied to 10 and 9 branches.
> The a followup patch
> https://gcc.gnu.org/g:554eb7d2e1ef5660d6a8e1c12ee1d751a70bbf31 was only
> applied in gcc-10 branch but not gcc-9 branch.

For the record, libreoffice compiles correctly with gcc 9.3.1 20210205 with
that gcc patch.

[Bug c++/98232] [9 Regression] ICE when compiling libreoffice

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98232

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
Dup.

*** This bug has been marked as a duplicate of bug 95719 ***