[Bug c/108002] New: Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[Bug c/108002] New: Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[pefy19950714 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

            Bug ID: 108002
           Summary: Throwing exception when compiling third-parties(ZSTD)
                    libraries with optimization option
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pefy19950714 at gmail dot com
  Target Milestone: ---

I got below exception when I was compiling zstd libraries with any g++
optimization options(O1, O2, O3, etc).
But, the compilation can be passed if I remove the optimization option.
-------------------------
.//src/extern/zstd/src/zstd.c: In function ‘ZSTD_bounds 
ZSTD_cParam_getBounds(ZSTD_cParameter)’:
.//src/extern/zstd/src/zstd.c:18062: internal compiler error: in tree_nrv, at
tree-nrv.c:143
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

-------------------------

There are some required information for your reference with gcc -v.
We are using redhat-release-5Client-5.9.0.2.

-------------------------

Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../gcc-4.4.3/configure --prefix=/mu/dev/gcc/4.4.3-rhel5-64
--with-local-prefix=/mu/mtsdk/corplib/gcc443-rhel5-64 --with-as=/mu/bin/gas
--with-ar=/mu/bin/gar --with-ld=/mu/bin/gld --with-nm=/mu/bin/gnm
--enable-bootstrap --enable-targets=x86_64,i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.3 (GCC)

-------------------------

The command we used to compile zstd lib:
g++ -O3 zstd.c -c -o zstd.o

-------------------------

ZSTD lib can be downloaded from here: 
https://github.com/facebook/zstd

-------------------------
Thanks for your help, and hope I can get the updates soon!

[Bug tree-optimization/108002] Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
4.4.3 is over 12 years old now. Is there any way to move to something newer?

[Bug tree-optimization/108002] Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[pefy19950714 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

--- Comment #2 from Grant Li <pefy19950714 at gmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> 4.4.3 is over 12 years old now. Is there any way to move to something newer?

I already tried gcc 4.4.7 and 4.4.4... but also had same error.
We need to compatible gcc with our RHEL5 environment, so it is the reason why I
can't move to more higher gcc version.
Can I know is it a known issue or is it fixed on any higher gcc version?

[Bug tree-optimization/108002] Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=50602,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=47011
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
#  pragma GCC optimize("-O2")

The bugs that related to this pragma were fixed in GCC 4.8.0 (a few were fixed
before).
There were many changes that helped fix it.
You could always build a newer GCC yourself but with an over 10 year release is
not going to be really supported.
There is nothing GCC bug report can do to help you.

RHEL5 is just not supported.

[Bug tree-optimization/108002] Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[pefy19950714 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

--- Comment #4 from Grant Li <pefy19950714 at gmail dot com> ---
(In reply to Andrew Pinski from comment #3)
> #  pragma GCC optimize("-O2")
> 
> The bugs that related to this pragma were fixed in GCC 4.8.0 (a few were
> fixed before).
> There were many changes that helped fix it.
> You could always build a newer GCC yourself but with an over 10 year release
> is not going to be really supported.
> There is nothing GCC bug report can do to help you.
> 
> RHEL5 is just not supported.

Thanks! I will discuss it with my team, appreciate your prompt reply.

[Bug tree-optimization/108002] Throwing exception when compiling third-parties(ZSTD) libraries with optimization option

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108002

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, you can always try to bisect what GCC change fixed the issue and try
backporting this yourself.