[cfe-dev] Bug (Regression) in clang trunk
Benjamin Kramer
benny.kra at googlemail.com
Fri Mar 2 10:25:05 PST 2012
On 02.03.2012, at 19:19, Fabio Fracassi wrote:
> Hello,
>
> when compiling this code with today's trunk (r151919) clang (on Snow
> Leopard) crashes with an Assertion. It worked before (version form some
> month back). Anyone seen this or shall I file a bug?
This was a recent regression, the offending commit was reverted in r151922.
- Ben
>
> Regards
>
> Fabio
>
> #include <boost/type_traits/is_const.hpp> // from boost 1.46.1
>
> template <typename Type>
> struct Foo {
> bool isConst() const { return boost::is_const<Type>::value; }
> };
>
> struct Test {};
>
> int main () {
> Foo<Test> h;
> bool b = h.isConst();
> }
>
> The output is:
> /usr/local/bin/clang++ -v -I /usr/local/include/boost-1_46_1/
> clang_crash.cpp clang version 3.1 (trunk 151919)
> Target: x86_64-apple-darwin10.8.0
> Thread model: posix
> "/usr/local/bin/clang-3.0" -cc1 -triple x86_64-apple-macosx10.6.0
> -emit-obj -mrelax-all -disable-free -main-file-name clang_crash.cpp
> -pic-level 1 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu
> core2 -v -resource-dir /usr/local/bin/../lib/clang/3.1 -I
> /usr/local/include/boost-1_46_1/ -fmodule-cache-path
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang-module-cache
> -fdeprecated-macro -fdebug-compilation-dir
> /Users/fabio/Development/Playground -ferror-limit 19 -fmessage-length
> 128 -stack-protector 1 -mstackrealign -fblocks
> -fobjc-dispatch-method=mixed -fcxx-exceptions -fexceptions
> -fdiagnostics-show-option -fcolor-diagnostics -o
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang_crash-yeZWUT.o
> -x c++ clang_crash.cpp
> clang -cc1 version 3.1 based upon LLVM 3.1svn default target
> x86_64-apple-darwin10.8.0
> #include "..." search starts here:
> #include <...> search starts here:
> /usr/local/include/boost-1_46_1
> /usr/include/c++/4.2.1
> /usr/include/c++/4.2.1/i686-apple-darwin10/x86_64
> /usr/include/c++/4.2.1/backward
> /usr/include/c++/4.0.0
> /usr/include/c++/4.0.0/i686-apple-darwin8
> /usr/include/c++/4.0.0/backward
> /usr/local/include
> /usr/local/bin/../lib/clang/3.1/include
> /usr/include
> /System/Library/Frameworks (framework directory)
> /Library/Frameworks (framework directory)
> End of search list.
> Assertion failed: (getOperand(0)->getType() ==
> cast<PointerType>(getOperand(1)->getType())->getElementType() && "Ptr
> must be a pointer to Val type!"), function AssertOK, file
> /Users/fabio/Development/LLVM/llvm/lib/VMCore/Instructions.cpp, line 1056.
> Stack dump:
> 0. Program arguments: /usr/local/bin/clang-3.0 -cc1 -triple
> x86_64-apple-macosx10.6.0 -emit-obj -mrelax-all -disable-free
> -main-file-name clang_crash.cpp -pic-level 1 -mdisable-fp-elim
> -masm-verbose -munwind-tables -target-cpu core2 -v -resource-dir
> /usr/local/bin/../lib/clang/3.1 -I /usr/local/include/boost-1_46_1/
> -fmodule-cache-path
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang-module-cache
> -fdeprecated-macro -fdebug-compilation-dir
> /Users/fabio/Development/Playground -ferror-limit 19 -fmessage-length
> 128 -stack-protector 1 -mstackrealign -fblocks
> -fobjc-dispatch-method=mixed -fcxx-exceptions -fexceptions
> -fdiagnostics-show-option -fcolor-diagnostics -o
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang_crash-yeZWUT.o
> -x c++ clang_crash.cpp
> 1. <eof> parser at end of file
> 2. Per-file LLVM IR generation
> 3. clang_crash.cpp:5:9: Generating code for declaration
> 'Foo<Test>::isConst'
> 4. clang_crash.cpp:5:25: LLVM IR generation of compound statement ('{}')
> clang-3: error: unable to execute command: Illegal instruction
> clang-3: error: clang frontend command failed due to signal (use -v to
> see invocation)
> clang-3: note: diagnostic msg: Please submit a bug report to
> http://llvm.org/bugs/ and include command line arguments and all
> diagnostic information.
> clang-3: note: diagnostic msg: Preprocessed source(s) and associated run
> script(s) are located at:
> clang-3: note: diagnostic msg:
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang_crash-0n0c93.ii
> clang-3: note: diagnostic msg:
> /var/folders/nG/nGiPDqRHGemu91F8AhkN2++++TI/-Tmp-/clang_crash-0n0c93.sh
>
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