[cfe-dev] [C++11][Forwarding declaration of enumerations] a bug involving defining enumeration outside of template class body
Richard Smith
richard at metafoo.co.uk
Mon Apr 1 14:45:23 PDT 2013
Fixed in r178502, thanks for the report.
On Mon, Apr 1, 2013 at 6:32 AM, zhangxiongpang <zhangxiongpang at gmail.com>wrote:
> **
>
> Hello, Rafael.
>
> I've commited it with a bug id 15633 .
>
> ------------------------------
> zhangxiongpang
>
> *From:* Rafael Espíndola <rafael.espindola at gmail.com>
> *Date:* 2013-04-01 21:10
> *To:* ZhangXiongpang <zhangxiongpang at gmail.com>
> *CC:* clang-dev Developers <cfe-dev at cs.uiuc.edu>
> *Subject:* Re: [cfe-dev] [C++11][Forwarding declaration of enumerations]
> a bug involving defining enumeration outside of template class body
> Can you please report a bug in llvm.org/bugs?
>
> Thanks,
> Rafael
>
>
> On 1 April 2013 03:39, ZhangXiongpang <zhangxiongpang at gmail.com> wrote:
> > Platform: linux, x86_84, clang++3.3 (trunk 177699), g++4.7.2
> >
> > Today I wrote some code testing c++11 "Forwarding declaration of
> > enumerations".
>
> > And a strange thing occurred. The following code makes clang++ core dump and
> > makes g++ got into a dead loop.
> > ----------------------------------
> > template <class T>
> > struct X {
> > struct Y {
> > enum class E : T;
> > };
> > };
> >
> > template <class T>
> > enum class X<T>::Y::E : T { e1, e2 };
> >
> > template class X<int>;
> > ----------------------------------
> >
> > The core dump information is as follows:
> > ----------------------------------
> > clang:
>
> > /root/work/newdisk/zhang/llvm/llvm/tools/clang/lib/Sema/SemaTemplate.cpp:863:
> > clang::DeclResult clang::Sema::CheckClassTemplate(clang::Scope*, unsigned
>
> > int, clang::Sema::TagUseKind, clang::SourceLocation, clang::CXXScopeSpec&,
> > clang::IdentifierInfo*, clang::SourceLocation, clang::AttributeList*,
> > clang::TemplateParameterList*, clang::AccessSpecifier,
> > clang::SourceLocation, unsigned int, clang::TemplateParameterList**):
> > Assertion `Kind != TTK_Enum && "can't build template of enumerated type"'
> > failed.
>
> > 0 clang 0x0000000002f4e50d llvm::sys::PrintStackTrace(_IO_FILE*)
> > + 38
> > 1 clang 0x0000000002f4e78a
> > 2 clang 0x0000000002f4e1e2
> > 3 libpthread.so.0 0x0000003ffd40f4c0
> > 4 libc.so.6 0x0000003ffcc329a5 gsignal + 53
> > 5 libc.so.6 0x0000003ffcc34185 abort + 373
> > 6 libc.so.6 0x0000003ffcc2b935 __assert_fail + 245
> > 7 clang 0x00000000014514e6
> > clang::Sema::CheckClassTemplate(clang::Scope*, unsigned int,
> > clang::Sema::TagUseKind, clang::SourceLocation, clang::CXXScopeSpec&,
> > clang::IdentifierInfo*, clang::SourceLocation, clang::AttributeList*,
> > clang::TemplateParameterList*, clang::AccessSpecifier,
>
> > clang::SourceLocation, unsigned int, clang::TemplateParameterList**) + 290
>
> > 8 clang 0x0000000001222119 clang::Sema::ActOnTag(clang::Scope*,
> > unsigned int, clang::Sema::TagUseKind, clang::SourceLocation,
> > clang::CXXScopeSpec&, clang::IdentifierInfo*, clang::SourceLocation,
> > clang::AttributeList*, clang::AccessSpecifier, clang::SourceLocation,
> > llvm::MutableArrayRef<clang::TemplateParameterList*>, bool&, bool&,
> > clang::SourceLocation, bool,
> > clang::ActionResult<clang::OpaquePtr<clang::QualType>, false>) + 637
> > 9 clang 0x00000000010fe46c
>
> > clang::Parser::ParseEnumSpecifier(clang::SourceLocation, clang::DeclSpec&,
> > clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
> > clang::Parser::DeclSpecContext) + 4258
> > 10 clang 0x00000000010fc207
> > clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
> > clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
>
> > clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) + 9139
> > 11 clang 0x000000000114b09b
> > clang::Parser::ParseSingleDeclarationAfterTemplate(unsigned int,
> > clang::Parser::ParsedTemplateInfo const&, clang::ParsingDeclRAIIObject&,
>
> > clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*) + 425
> > 12 clang 0x000000000114aea4
> > clang::Parser::ParseTemplateDeclarationOrSpecialization(unsigned int,
> > clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*) +
> > 1046
> > 13 clang 0x000000000114a9e5
> > clang::Parser::ParseDeclarationStartingWithTemplate(unsigned int,
>
> > clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*) + 217
> > 14 clang 0x00000000010f6d0e
> > clang::Parser::ParseDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&,
> > unsigned int, clang::SourceLocation&,
> > clang::Parser::ParsedAttributesWithRange&) + 242
> > 15 clang 0x00000000010e5a32
>
> > clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
> > clang::ParsingDeclSpec*) + 1622
> > 16 clang 0x00000000010e53ab
>
> > clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) +
> > 413
> > 17 clang 0x00000000010e1db2 clang::ParseAST(clang::Sema&, bool,
> > bool) + 610
> > 18 clang 0x0000000000cd5ef4
> > clang::ASTFrontendAction::ExecuteAction() + 298
>
> > 19 clang 0x0000000000f056e6 clang::CodeGenAction::ExecuteAction()
> > + 1296
>
> > 20 clang 0x0000000000cd5a76 clang::FrontendAction::Execute() + 200
> > 21 clang 0x0000000000caabc4
> > clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 722
> > 22 clang 0x0000000000c7acee
> > clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1048
>
> > 23 clang 0x0000000000c6ab87 cc1_main(char const**, char const**,
> > char const*, void*) + 673
> > 24 clang 0x0000000000c7528d main + 484
> > 25 libc.so.6 0x0000003ffcc1ec5d __libc_start_main + 253
> > 26 clang 0x0000000000c6a309
> > Stack dump:
> > 0. Program arguments:
> > /root/work/newdisk/zhang/llvm/build/Debug+Asserts/bin/clang -cc1 -triple
>
> > x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
> > test.cpp -mrelocation-model static -mdisable-fp-elim -fmath-errno
> > -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64
>
> > -target-linker-version 2.20.51.0.2 -momit-leaf-frame-pointer -coverage-file
>
> > /root/work/newdisk/zhang/c++11/20130401/forward_declarations_for_enums/test.o
> > -resource-dir
> > /root/work/newdisk/zhang/llvm/build/Debug+Asserts/bin/../lib/clang/3.3
> > -I/opt/intel/composer_xe_2013.1.117/mkl/include
> > -I/opt/intel/composer_xe_2013.1.117/tbb/include -internal-isystem
> > /usr/lib/gcc/x86_64-redhat-linux/4.4.4/../../../../include/c++/4.4.4
> > -internal-isystem
>
> > /usr/lib/gcc/x86_64-redhat-linux/4.4.4/../../../../include/c++/4.4.4/x86_64-redhat-linux
> > -internal-isystem
>
> > /usr/lib/gcc/x86_64-redhat-linux/4.4.4/../../../../include/c++/4.4.4/backward
> > -internal-isystem
>
> > /usr/lib/gcc/x86_64-redhat-linux/4.4.4/../../../../include/x86_64-redhat-linux/c++/4.4.4
> > -internal-isystem /usr/local/include -internal-isystem
>
> > /root/work/newdisk/zhang/llvm/build/Debug+Asserts/bin/../lib/clang/3.3/include
> > -internal-externc-isystem /include -internal-externc-isystem /usr/include
> > -std=c++11 -fdeprecated-macro -fdebug-compilation-dir
> > /root/work/newdisk/zhang/c++11/20130401/forward_declarations_for_enums
> > -ferror-limit 19 -fmessage-length 114 -mstackrealign -fobjc-runtime=gcc
> > -fobjc-default-synthesize-properties -fcxx-exceptions -fexceptions
> > -fdiagnostics-show-option -fcolor-diagnostics -backend-option
> > -vectorize-loops -o test.o -x c++ test.cpp
> > 1. test.cpp:11:27: current parser token '{'
> > 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 177699) (llvm/trunk 177691)
> > Target: x86_64-unknown-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.
> > 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/test-9ucxjN.cpp
> > clang: note: diagnostic msg: /tmp/test-9ucxjN.sh
> > clang: note: diagnostic msg:
> >
> > ********************
> > ----------------------------------
> >
> >
> >
> >
> > --
> > View this message in context:
> http://clang-developers.42468.n3.nabble.com/C-11-Forwarding-declaration-of-enumerations-a-bug-involving-defining-enumeration-outside-of-templatey-tp4031237.html
> > Sent from the Clang Developers mailing list archive at Nabble.com.
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>
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