[cfe-dev] Compiler crash on libclang with r171300

[Benjamin Kramer]

On 31.12.2012, at 17:12, Matthieu Monrocq <matthieu.monrocq at gmail.com> wrote:

> Hello,
> 
> I was trying to compile the Release+Assert of LLVM + Clang at r171300 and I hit an assertion building ~/llvm/tools/clang/tools/libclang/ARCMigrate.cpp with the newly built clang (whilst the Debug build worked fine).
> 
> (and no I don't care to create a BugZilla account to report a bug...)

I reverted the offending change in r171318, selfhost should work again.

- Ben
> 
> 
> Console:
> 
> clang: ~/llvm/include/llvm/ADT/APInt.h:888: bool llvm::APInt::operator==(const llvm::APInt &) const: Assertion `BitWidth == RHS.BitWidth && "Comparison requires equal bit widths"' failed.
> 0  clang 0x09bfa4e9
> Stack dump:
> 0.      Program arguments: ~/llvm-release/Release+Asserts/bin/clang -cc1 -triple i386-pc-linux-gnu -emit-obj -disable-free -main-file-name ARCMigrate.cpp -mrelocation-model pic -pic-level 2 -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -target-cpu pentium4 -target-linker-version 2.22 -momit-leaf-frame-pointer -coverage-file ~/llvm-release/tools/clang/tools/libclang/Release+Asserts/ARCMigrate.o -resource-dir ~/llvm-release/Release+Asserts/bin/../lib/clang/3.3 -dependency-file ~/llvm-release/tools/clang/tools/libclang/Release+Asserts/ARCMigrate.d.tmp -MP -MT ~/llvm-release/tools/clang/tools/libclang/Release+Asserts/ARCMigrate.o -MT ~/llvm-release/tools/clang/tools/libclang/Release+Asserts/ARCMigrate.d -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I ~/llvm-release/include -I ~/llvm-release/tools/clang/tools/libclang -I ~/llvm/include -I ~/llvm/tools/clang/tools/libclang -I ~/llvm/tools/clang/tools/libclang/../../include -I ~/llvm-release/tools/clang/tools/libclang/../../include -fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6 -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/i686-linux-gnu -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/backward -internal-isystem /usr/local/include -internal-isystem ~/llvm-release/Release+Asserts/bin/../lib/clang/3.3/include -internal-externc-isystem /usr/include/i386-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Woverloaded-virtual -Wcast-qual -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcovered-switch-default -pedantic -fconst-strings -fdeprecated-macro -fdebug-compilation-dir ~/llvm-release/tools/clang/tools/libclang -ferror-limit 19 -fmessage-length 207 -fvisibility-inlines-hidden -mstackrealign -fno-rtti -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -backend-option -vectorize-loops -o ~/llvm-release/tools/clang/tools/libclang/Release+Asserts/ARCMigrate.o -x c++ ~/llvm/tools/clang/tools/libclang/ARCMigrate.cpp
> 1.      <eof> parser at end of file
> 2.      Per-module optimization passes
> 3.      Running pass 'CallGraph Pass Manager' on module '~/llvm/tools/clang/tools/libclang/ARCMigrate.cpp'.
> 4.      Running pass 'Global Value Numbering' on function '@clang_getRemappingsFromFileList'
> clang: error: unable to execute command: Aborted (core dumped)
> clang: error: clang frontend command failed due to signal (use -v to see invocation)
> clang version 3.3 (trunk 171300)
> Target: i386-pc-linux-gnu
> Thread model: posix
> clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.
> 
> 
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