[Bug c++/94493] New: FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[Bug c++/94493] New: FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

            Bug ID: 94493
           Summary: FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if
                    building ftp/filezilla
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc-bugs at opsec dot eu
  Target Milestone: ---

Created attachment 48200
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48200&action=edit
output of test-compile

ftp/filezilla is at version 3.40.0 in the FreeBSD ports tree.

As maintainer for that port, I try to update to 3.47.2.1, but all newer
versions fail to compile, because the g++9 used (lang/gcc9) crashes.

The generated *.i* file is empty (!)

-rw-------  1 pi  wheel  83460096 Apr  5 22:30 cc1plus.core
-rw-rw-r--  1 pi  wheel         0 Apr  5 22:30 engine_context.ii

The coredump can be found at:

https://opsec.eu/backup/cc1plus.core

The script to run the compile is attached, as well as the output.

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #1 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
Created attachment 48201
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48201&action=edit
the compile script

The compile script

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #2 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
An attempt to produce a reduced test case failed.

Even commenting the first line of of the first include in engine_context.cpp
cause a crash.

FreeBSD version:
FreeBSD fc.opsec.eu 13.0-CURRENT FreeBSD 13.0-CURRENT #1 r359631M: Sun Apr  5
01:05:13 CEST 2020     pi@fc.opsec.eu:/usr/obj/usr/src/amd64.amd64/sys/GENERIC 
amd64

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #3 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
g++9 -v
Using built-in specs.
COLLECT_GCC=g++9
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc9/gcc/x86_64-portbld-freebsd13.0/9.3.0/lto-wrapper
Target: x86_64-portbld-freebsd13.0
Configured with: /wrkdirs/usr/ports/lang/gcc9/work/gcc-9.3.0/configure
--enable-multilib --enable-plugin --with-build-config=bootstrap-debug
--disable-nls --enable-gnu-indirect-function --libdir=/usr/local/lib/gcc9
--libexecdir=/usr/local/libexec/gcc9 --program-suffix=9
--with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc9/include/c++/
--with-ld=/usr/local/bin/ld --with-pkgversion='FreeBSD Ports Collection'
--with-system-zlib --enable-languages=c,c++,objc,fortran --prefix=/usr/local
--localstatedir=/var --mandir=/usr/local/man
--infodir=/usr/local/share/info/gcc9 --build=x86_64-portbld-freebsd13.0
Thread model: posix
gcc version 9.3.0 (FreeBSD Ports Collection)

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #4 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
Created attachment 48202
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48202&action=edit
The source code

As described, it crashes very early in the compile

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-04-06
             Status|UNCONFIRMED                 |WAITING
                 CC|                            |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please provide a pre-processed test-case (-E option)?

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you try if not using PCH fixes the issue?

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #7 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
This command produces -E output, see attached out.txt and err.txt:

g++9 \
        -v \
        -E \
        -std=c++17 \
        -DHAVE_CONFIG_H \
        -I. \
        -I../../src/include \
        -isystem /usr/local/include \
        -fpch-preprocess \
        -fno-strict-aliasing \
        -fwrapv \
        -fno-aggressive-loop-optimizations \
        -fsanitize=undefined \
        -O2 \
        -Wl,-rpath=/usr/local/lib/gcc9 \
        -Wall \
        -Wextra \
        -g \
        engine_context.cpp

Adding -fstack-protector-strong causes it to crash without producing output.

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #8 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
Created attachment 48215
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48215&action=edit
stderr of working build

stdout is at: https://people.freebsd.org/~pi/logs/out.txt

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gerald at pfeifer dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

Gerald Pfeifer <gerald at pfeifer dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gerald at pfeifer dot com

--- Comment #9 from Gerald Pfeifer <gerald at pfeifer dot com> ---
Created attachment 48216
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48216&action=edit
Preprocessed sources

(In reply to Kurt Jaeger from comment #8)
> stdout is at: https://people.freebsd.org/~pi/logs/out.txt

I am attaching this here in GCC Bugzilla as x.ii, pre-processed sources.


Kurt, I tried to reproduce this on x86_64-suse-linux (9.2.1 20200306), 
i386-unknown-freebsd 11.3 (10.0.1 20200406), but did not succeed with
your input file and the invocation you shared.

Can you run your build with option -save-temps and see whether the resulting
.ii files differs from what you shared? (It should not, I think.)

And once you have that run that through the compiler that crashes and try to
identify the minimal set of options required?  -std=c++17 is one of those
necessary to make it build, are the others all required to see the crash?

Probably best to start with the full set and remove one after the other
until it stops failing. Thanks!.

[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #10 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
If the option -fstack-protector-strong is used, the *.i* files are empty.