[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 Martin Liška changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |DUPLICATE --- Comment #11 from Martin Liška --- Dup. *** This bug has been marked as a duplicate of bug 94612 ***
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #10 from Richard Biener --- (In reply to Martin Liška from comment #9) > (In reply to Martin Liška from comment #8) > > @Richi: Can you please enable zstd for our nvptx cross compiler: > > > > $ x86_64-suse-linux-accel-nvptx-none-gcc-10 -v > > ... > > Supported LTO compression algorithms: zlib > > > > We'll need to add > > BuildRequires: libzstd-devel > > > > into cross spec file. > > @Richi: PING done
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #9 from Martin Liška --- (In reply to Martin Liška from comment #8) > @Richi: Can you please enable zstd for our nvptx cross compiler: > > $ x86_64-suse-linux-accel-nvptx-none-gcc-10 -v > ... > Supported LTO compression algorithms: zlib > > We'll need to add > BuildRequires: libzstd-devel > > into cross spec file. @Richi: PING
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #8 from Martin Liška --- @Richi: Can you please enable zstd for our nvptx cross compiler: $ x86_64-suse-linux-accel-nvptx-none-gcc-10 -v ... Supported LTO compression algorithms: zlib We'll need to add BuildRequires: libzstd-devel into cross spec file.
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #7 from Matthias Klose --- $ gfortran-10 -flto -c program.f90 $ readelf -SW program.o | grep lto_.lto [ 6] .gnu.lto_.lto.c7eb6f75a94ea29a PROGBITS cc 08 00 E 0 0 1 $ objdump -s -j .gnu.lto_.lto.c7eb6f75a94ea29a program.o program.o: file format elf64-x86-64 Contents of section .gnu.lto_.lto.c7eb6f75a94ea29a: 0900 01000100 Yes, I get the very same stacktrace ending in lto_uncompression_zlib.
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #6 from Martin Liška --- (In reply to Matthias Klose from comment #3) > $ gfortran-10 -v -fopenacc program.f90 2>&1 |grep zstd > Supported LTO compression algorithms: zlib zstd > Supported LTO compression algorithms: zlib zstd > > afaics both builds are correctly configured. Then you can dump lto header in a .o file: $ gcc -flto -c bss.c $ readelf -SW bss.o | grep lto_.lto [ 6] .gnu.lto_.lto.2cfeb5fb4c8095f PROGBITS 62 08 00 E 0 0 1 $ objdump -s -j .gnu.lto_.lto.2cfeb5fb4c8095f bss.o bss.o: file format elf64-x86-64 Contents of section .gnu.lto_.lto.2cfeb5fb4c8095f: 0900 01000100 that ending 0100 is zstd == 1.
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #5 from Richard Biener --- Btw, your backtrace ends up in lto_uncompression_zlib but Matthias shows the Ubuntu packages have zstd enabled. I'd have expected only zstd compressed sections there. Matthias, can you reproduce the issue?
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 --- Comment #4 from Richard Biener --- So I tried it with the SUSE GCC 10 packages and it works fine (I've double-checked nvptx is offloaded). But my packages are only configured for zlib ... (I'm testing on Leap 15.1 which doesn't have zstd I think).
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 Matthias Klose changed: What|Removed |Added CC||doko at debian dot org --- Comment #3 from Matthias Klose --- $ gfortran-10 -v -fopenacc program.f90 2>&1 |grep zstd Supported LTO compression algorithms: zlib zstd Supported LTO compression algorithms: zlib zstd afaics both builds are correctly configured.
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129
Martin Liška changed:
What|Removed |Added
Ever confirmed|0 |1
Last reconfirmed||2020-03-11
Status|UNCONFIRMED |NEW
--- Comment #2 from Martin Liška ---
(In reply to Richard Biener from comment #1)
> You should report this to Ubuntu, I suspect a build problem there,
> eventually enabling zstd compression for gfortran-10 but zlib compression
> for gcc-10-offload-nvptx (I'm not sure we inter-operate here - Martin?)
Yes, I bet one of the compilers does not have enabled ZSTD compression.
You can see it with gcc -v:
$ gcc -v
...
Supported LTO compression algorithms: zlib zstd
gcc version 10.0.1 20200310 (experimental) (GCC)
Right now we should catch different compression algorithm:
void
lto_end_uncompression (struct lto_compression_stream *stream,
lto_compression compression)
{
#ifdef HAVE_ZSTD_H
if (compression == ZSTD)
{
lto_uncompression_zstd (stream);
return;
}
#endif
if (compression == ZSTD)
internal_error ("compiler does not support ZSTD LTO compression");
lto_uncompression_zlib (stream);
}
[Bug fortran/94129] Using almost any openacc !$acc directive causes ICE "compressed stream: data error"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94129 Richard Biener changed: What|Removed |Added Keywords||openacc CC||doko at gcc dot gnu.org, ||marxin at gcc dot gnu.org --- Comment #1 from Richard Biener --- You should report this to Ubuntu, I suspect a build problem there, eventually enabling zstd compression for gfortran-10 but zlib compression for gcc-10-offload-nvptx (I'm not sure we inter-operate here - Martin?)
