LLVM/Clang version 7.0.0rc2 fails with gcc (Debian 8.2.0-4)

dileks · August 27, 2018, 4:09pm

Hi,

I have not sent yet any bug-reports to llvm-dev but I am seeing this
build-failure:

...
[574/3685] Building CXX object
lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o
FAILED: lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o
/usr/bin/g++-8 -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GNU_SOURCE
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-Ilib/Bitcode/Reader
-I/home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader -Iinclude
-I/home/sdi/src/llvm-toolchain/llvm/include -fPIC
-fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra
-Wno-unused-parameter -Wwrite-strings -Wcast-qual
-Wno-missing-field-initializers -pedantic -Wno-long-long
-Wno-maybe-uninitialized -Wno-class-memaccess
-Wdelete-non-virtual-dtor -Wno-comment -fdiagnostics-color
-ffunction-sections -fdata-sections -O3 -UNDEBUG -fno-exceptions
-fno-rtti -MD -MT
lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o
-MF lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o.d
-o lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o
-c /home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
/home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader/MetadataLoader.cpp:
In member function 'llvm::Error
llvm::MetadataLoader::MetadataLoaderImpl::parseOneMetadata(llvm::SmallVectorImpl<long
unsigned int>&, unsigned int,
{anonymous}::{anonymous}::PlaceholderQueue&, llvm::StringRef, unsigned
int&)':
/home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader/MetadataLoader.cpp:1771:1:
internal compiler error: Segmentation fault
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.

root@inizai# gcc --version
gcc (Debian 8.2.0-4) 8.2.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Is that a known issue?
Any workoround or fix available?

Regards,
- Sedat -

dileks · August 28, 2018, 8:26am

Building with my selfmade llvm-toolchain was successful.
So this seems to be a GCC bug.

Interesting is that building with LLVM/Clang reduces disk-usage
(default compression-level for gzip):

root@iniza:/opt/archives# du -m *.tar.gz
353 llvm-toolchain-7.0.0rc2.tar.gz
468 llvm-toolchain-7.0.0.tar.gz

- Sedat -

Hans_Wennborg · August 28, 2018, 8:59am

I tried building the 7.0.0 branch with a vanilla gcc 8.2.0 build, but
I couldn't reproduce the error.

Have you reported the bug to the gcc bugzilla?

Even if it's not an LLVM bug, it would be unfortunate if the release
doesn't build with Debian's gcc, so it would be good to get to the
bottom of this.

Thanks,
Hans

dileks · August 28, 2018, 11:55am

[ CC debian-gcc and Matthias Klose ]

My last GCC bug report is a while ago.
Maybe this is a known issue in the Debian world.

Adding my scripts for the sake of completeness.

- sed@ -

[1] LLVM 7.0.0 Release Candidates

build_clang-with-ninja.sh (2.23 KB)

install_clang-with-ninja.sh (1.23 KB)

unpack_llvm-tarballs.sh (675 Bytes)

Matthias_Klose · August 29, 2018, 5:51am

Debian's GCC is built from the gcc-8-branch. See gcc -v how it is configured.
You didn't tell how you configured your GCC build. Please provide the
preprocessed source and the command line options used for the build.

Thanks, Matthias

dileks · August 29, 2018, 7:29am

Hi Matthias,

not sure if I understand this correctly, I am using the GCC from
Debian/buster not a selfmade one.

root@iniza# gcc-8 -v
Using built-in specs.
COLLECT_GCC=gcc-8
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian
8.2.0-4' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++
--prefix=/usr --with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-objc-gc=auto --enable-multiarch --disable-werror
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-4)

I have to check how to get the full cmake line(s) and the preprocessed
source file.

Thanks.

Regards,
- Sedat -

dileks · August 29, 2018, 11:10am

Hi Matthias,

I hope this got all informations you need?

[ gcc-bug_preprocessed.sh ]

LANG=C

cd build

/usr/bin/g++-8 \
        -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GNU_SOURCE \
        -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS \
        -Ilib/Bitcode/Reader \
        -I/home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader
-Iinclude -I/home/sdi/src/llvm-toolchain/llvm/include \
        -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11
-Wall -Wextra \
        -Wno-unused-parameter -Wwrite-strings -Wcast-qual \
        -Wno-missing-field-initializers -pedantic -Wno-long-long \
        -Wno-maybe-uninitialized -Wno-class-memaccess \
        -Wdelete-non-virtual-dtor -Wno-comment -fdiagnostics-color \
        -ffunction-sections -fdata-sections -O3 -UNDEBUG -fno-exceptions \
        -fno-rtti -MD -MT \
        lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o \
        -MF lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o.d
\
        -o lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/MetadataLoader.cpp.o
\
        -c /home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader/MetadataLoader.cpp

/usr/bin/g++-8 \
        -o /tmp/preprocessed.ii \
        -I/home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader
-Iinclude -I/home/sdi/src/llvm-toolchain/llvm/include \
        -E /home/sdi/src/llvm-toolchain/llvm/lib/Bitcode/Reader/MetadataLoader.cpp

Thanks.

Regards,
- Sedat -

preprocessed.ii (3.59 MB)

Matthias_Klose · August 29, 2018, 2:36pm

I get errors when running this command. I assume the first command is the one
which is run by the build process. Please could you just run that one with an
additional -save-temps option and then send the (compressed) MetadataLoader.ii?

Matthias

dileks · August 29, 2018, 2:55pm

Hi Matthias,

thank you for jumping in this issue.

I have collected all relevant files in the attached tarball.

Hope that helps you.

Regards,
- Sedat -

P.S.: List content of for-doko directory

sdi@iniza:~/src/llvm-toolchain$ LC_ALL=C ls -lhR for-doko/
for-doko/:
total 4.5M
-rw-r--r-- 1 sdi sdi 271K Aug 29 16:47 MetadataLoader.cpp.o
-rw-r--r-- 1 sdi sdi 20K Aug 29 16:47 MetadataLoader.cpp.o.d
-rw-r--r-- 1 sdi sdi 3.6M Aug 29 16:47 MetadataLoader.ii
-rw-r--r-- 1 sdi sdi 603K Aug 29 16:47 MetadataLoader.s
-rwxr-xr-x 1 sdi sdi 1009 Aug 29 16:46 gcc-bug_preprocessed_doko.sh
-rw-r--r-- 1 sdi sdi 602 Aug 29 16:50 ls-lh.txt

for-doko.tar.gz (636 KB)

for-doko.tar.gz.sha256sum (82 Bytes)

dileks · September 6, 2018, 1:17pm

Hi Matthias,

do you had a chance to look into this issue?

I have pulled latest commits from release_70 Git branches (see below) ...

$ cd llvm-git/

$ git log --oneline -1
a5b9a59eac78 (HEAD -> release_70, origin/release_70) Merging r341512:

build_clang-with-ninja.sh (2.23 KB)

install_clang-with-ninja.sh (1.24 KB)

clone_llvm-git.sh (571 Bytes)