[llvm-dev] LLVM/Clang version 7.0.0rc2 fails with gcc (Debian 8.2.0-4)

[Matthias Klose via llvm-dev]

On 28.08.2018 13:55, Sedat Dilek wrote:
> On Tue, Aug 28, 2018 at 10:59 AM, Hans Wennborg <hans at chromium.org> wrote:
>> On Tue, Aug 28, 2018 at 10:26 AM, Sedat Dilek via llvm-dev
>> <llvm-dev at lists.llvm.org> wrote:
>>> On Mon, Aug 27, 2018 at 6:09 PM, Sedat Dilek <sedat.dilek at gmail.com> wrote:
>>>> 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 at 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?
>>>>
>>>
>>> Building with my selfmade llvm-toolchain was successful.
>>> So this seems to be a GCC bug.
>>
>> 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.
>>
> 
> [ 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.

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