clang crashes on last version

[beniz]

libtool: compile:  clang++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/eigen3 -Wall -g -std=c++11 -fopenmp -g -O2 -MT cmaparameters.lo -MD -MP -MF .deps/cmaparameters.Tpo -c cmaparameters.cc -o cmaparameters.o >/dev/null 2>&1
0  libLLVM-3.5.so.1 0x00002b5f9e10d7e2 llvm::sys::PrintStackTrace(_IO_FILE*) + 34
1  libLLVM-3.5.so.1 0x00002b5f9e10d5d4
2  libpthread.so.0  0x00002b5f9ebd0340
3  clang            0x0000000000863d5e clang::CodeGen::CodeGenTypes::ConvertType(clang::QualType) + 1934
4  clang            0x00000000008a0ade clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo(clang::CanQual<clang::Type>, bool, llvm::ArrayRef<clang::CanQual<clang::Type> >, clang::FunctionType::ExtInfo, clang::CodeGen::RequiredArgs) + 606
5  clang            0x00000000008a7fe1
6  clang            0x00000000008a8810 clang::CodeGen::CodeGenTypes::arrangeCXXMethodType(clang::CXXRecordDecl const*, clang::FunctionProtoType const*) + 192
7  clang            0x0000000000849ed3 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) + 67
8  clang            0x000000000084ac64 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) + 244
9  clang            0x000000000084d42d clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) + 1341
10 clang            0x000000000084dc33
11 clang            0x00000000007f5643
12 clang            0x00000000007f30dc
13 clang            0x0000000000cbece5 clang::Sema::InstantiateFunctionDefinition(clang::SourceLocation, clang::FunctionDecl*, bool, bool) + 1813
14 clang            0x0000000000c98fe2 clang::Sema::InstantiateClassMembers(clang::SourceLocation, clang::CXXRecordDecl*, clang::MultiLevelTemplateArgumentList const&, clang::TemplateSpecializationKind) + 898
15 clang            0x0000000000c98ef3 clang::Sema::InstantiateClassMembers(clang::SourceLocation, clang::CXXRecordDecl*, clang::MultiLevelTemplateArgumentList const&, clang::TemplateSpecializationKind) + 659
16 clang            0x0000000000c99196 clang::Sema::InstantiateClassTemplateSpecializationMembers(clang::SourceLocation, clang::ClassTemplateSpecializationDecl*, clang::TemplateSpecializationKind) + 86
17 clang            0x0000000000c40148 clang::Sema::ActOnExplicitInstantiation(clang::Scope*, clang::SourceLocation, clang::SourceLocation, unsigned int, clang::SourceLocation, clang::CXXScopeSpec const&, clang::OpaquePtr<clang::TemplateName>, clang::SourceLocation, clang::SourceLocation, llvm::MutableArrayRef<clang::ParsedTemplateArgument>, clang::SourceLocation, clang::AttributeList*) + 1432
18 clang            0x000000000099094c clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::Parser::ParsedAttributesWithRange&) + 5180
19 clang            0x0000000000979f0e clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) + 2542
20 clang            0x00000000009cc59d clang::Parser::ParseSingleDeclarationAfterTemplate(unsigned int, clang::Parser::ParsedTemplateInfo const&, clang::ParsingDeclRAIIObject&, clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*) + 909
21 clang            0x00000000009cde19 clang::Parser::ParseExplicitInstantiation(unsigned int, clang::SourceLocation, clang::SourceLocation, clang::SourceLocation&, clang::AccessSpecifier) + 169
22 clang            0x00000000009cdfdc clang::Parser::ParseDeclarationStartingWithTemplate(unsigned int, clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*) + 300
23 clang            0x000000000097e9b8 clang::Parser::ParseDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, unsigned int, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) + 584
24 clang            0x0000000000968544 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) + 372
25 clang            0x0000000000989458 clang::Parser::ParseInnerNamespace(std::vector<clang::SourceLocation, std::allocator<clang::SourceLocation> >&, std::vector<clang::IdentifierInfo*, std::allocator<clang::IdentifierInfo*> >&, std::vector<clang::SourceLocation, std::allocator<clang::SourceLocation> >&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) + 408
26 clang            0x0000000000989d0e clang::Parser::ParseNamespace(unsigned int, clang::SourceLocation&, clang::SourceLocation) + 2014
27 clang            0x000000000097ea10 clang::Parser::ParseDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, unsigned int, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) + 672
28 clang            0x0000000000968544 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) + 372
29 clang            0x0000000000968c8c clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 428
30 clang            0x000000000096027b clang::ParseAST(clang::Sema&, bool, bool) + 283
31 clang            0x000000000068f409 clang::FrontendAction::Execute() + 169
32 clang            0x000000000066f795 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 293
33 clang            0x000000000065a276 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1654
34 clang            0x0000000000654e48 cc1_main(char const**, char const**, char const*, void*) + 1176
35 clang            0x0000000000653c10 main + 4640
36 libc.so.6        0x00002b5f9f319ec5 __libc_start_main + 245
37 clang            0x0000000000653e7f
Stack dump:
0.  Program arguments: /usr/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -disable-free -disable-llvm-verifier -main-file-name cmastrategy.cc -mrelocation-model pic -pic-level 2 -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -target-linker-version 2.24 -momit-leaf-frame-pointer -g -coverage-file /home/beniz/research/siminole/dev/libcmaes/src/.libs/cmastrategy.o -resource-dir /usr/bin/../lib/clang/3.5 -dependency-file .deps/cmastrategy.Tpo -sys-header-deps -MP -MT cmastrategy.lo -D HAVE_CONFIG_H -D PIC -I . -I .. -I /usr/include/eigen3 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8 -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/clang/3.5/include -internal-externc-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wall -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /home/beniz/research/siminole/dev/libcmaes/src -ferror-limit 19 -fmessage-length 112 -mstackrealign -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o .libs/cmastrategy.o -x c++ cmastrategy.cc 
1.  cmastrategy.cc:163:47: current parser token ';'
2.  cmastrategy.cc:29:1: parsing namespace 'libcmaes'
3.  cmastrategy.cc:33:92: LLVM IR generation of declaration 'libcmaes::CMAStrategy<libcmaes::CovarianceUpdate>::<anonymous class>::operator()'
4.  cmastrategy.cc:33:92: Generating code for declaration 'libcmaes::CMAStrategy<libcmaes::CovarianceUpdate>::<anonymous class>::operator()'
7 warnings generated.
clang: error: unable to execute command: Segmentation fault (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Ubuntu clang version 3.5-1ubuntu1 (trunk) (based on LLVM 3.5)
Target: x86_64-pc-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to http://bugs.debian.org/ and include the crash backtrace, preprocessed source, and associated run script.
libtool: compile:  clang++ -DHAVE_CONFIG_H -I. -I.. -I/usr/include/eigen3 -Wall -g -std=c++11 -fopenmp -g -O2 -MT esostrategy.lo -MD -MP -MF .deps/esostrategy.Tpo -c esostrategy.cc -o esostrategy.o >/dev/null 2>&1
clang: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/cmastrategy-dac114.cpp
clang: note: diagnostic msg: /tmp/cmastrategy-dac114.sh
clang: note: diagnostic msg: 

********************
make[2]: *** [cmastrategy.lo] Error 1
make[2]: *** Waiting for unfinished jobs....

[beniz]

both clang-3.4 and clang-3.5 do crash here.

[beniz]

I've submitted a bug to clang developers, to be followed here: http://llvm.org/bugs/show_bug.cgi?id=19532

[beniz]

Updated the bug @ clang, still no response. This is definitely a clang problem, so there's nothing more that can be done here on this side.

[beniz]

FYI, clang bug was confirmed at http://llvm.org/bugs/show_bug.cgi?id=19532

[beniz]

Just got a hint from clang devs on how to work around the clang bug, this issue should be updated soon then.

[beniz]

Work around the bug is now working! Issue remains with external gflags lib, which is outside our realm, but I will investigate fully before the fix is merged.

FTR, for now, compiling with clang on linux requires:

./configure CXXFLAGS="-O2 -stdlib=libc++ -std=c++11"

This forces the use of libc++ as clang 3.5 is buggy with libstdc++ 4.9 (http://reviews.llvm.org/rL201729). I will investigate clang 3.6 in case the fix from llvm has been merged there.

[beniz]

After much testing, more recent versions of clang-3.5 work on the stdlibc++:

./configure CXXFLAGS="-O2 -std=c++11"

So, AFAIK:

• Ubuntu 14.04: needs -stdlib=libc++
• Ubuntu 14.10: use line above
  I will test on OSX when possible in order to find proper settings as well.

clang-3.6 utterly fails, in all my experiments. Since it is the development version of clang, I am not supporting it for now.

[beniz]

libcmaes now compiles fine on OSX with default clang compiler, the documentation has been updated with a quickstart section for building without too much hassle on OSX, see https://github.com/beniz/libcmaes/wiki/Building-libcmaes-on-Mac-OSX