[llvm-bugs] [Bug 28100] New: clang crashes on valid C++11 code: Assertion `!SpecInfo->isExplicitSpecialization()' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Sun Jun 12 18:29:41 PDT 2016
https://llvm.org/bugs/show_bug.cgi?id=28100
Bug ID: 28100
Summary: clang crashes on valid C++11 code: Assertion
`!SpecInfo->isExplicitSpecialization()' failed
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: unassignedclangbugs at nondot.org
Reporter: su at cs.ucdavis.edu
CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
Classification: Unclassified
The current clang trunk crashes when compiling the following valid C++11 test
case on x86_64-linux-gnu in both 32-bit and 64-bit modes.
This is a regression from 3.8.x.
$ clang++ -v
clang version 3.9.0 (trunk 272507)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$
$ clang++-3.8 -std=c++11 -c small.cpp
$ g++-6.1 -std=c++11 -c small.cpp
$
$ clang++ -std=c++11 -c small.cpp
clang-3.9:
/tmp/llvm-builder/llvm-source-trunk/tools/clang/lib/Sema/SemaTemplate.cpp:6995:
bool clang::Sema::CheckFunctionTemplateSpecialization(clang::FunctionDecl*,
clang::TemplateArgumentListInfo*, clang::LookupResult&): Assertion
`!SpecInfo->isExplicitSpecialization()' failed.
#0 0x0000000001e23f35 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e23f35)
#1 0x0000000001e21dc6 llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-3.9+0x1e21dc6)
#2 0x0000000001e21fe4 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e21fe4)
#3 0x00007f6e992e4340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f6e98502cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f6e985060d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f6e984fbb86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f6e984fbc32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000002efb424
clang::Sema::CheckFunctionTemplateSpecialization(clang::FunctionDecl*,
clang::TemplateArgumentListInfo*, clang::LookupResult&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2efb424)
#9 0x0000000002c19fb6 clang::Sema::ActOnFunctionDeclarator(clang::Scope*,
clang::Declarator&, clang::DeclContext*, clang::TypeSourceInfo*,
clang::LookupResult&, llvm::MutableArrayRef<clang::TemplateParameterList*>,
bool&) (/usr/local/clang-trunk/bin/clang-3.9+0x2c19fb6)
#10 0x0000000002c1bb72 clang::Sema::HandleDeclarator(clang::Scope*,
clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>)
(/usr/local/clang-trunk/bin/clang-3.9+0x2c1bb72)
#11 0x0000000002ebba8a clang::Sema::ActOnTemplateDeclarator(clang::Scope*,
llvm::MutableArrayRef<clang::TemplateParameterList*>, clang::Declarator&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2ebba8a)
#12 0x000000000294c61d
clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*)
(/usr/local/clang-trunk/bin/clang-3.9+0x294c61d)
#13 0x00000000029c99d7
clang::Parser::ParseSingleDeclarationAfterTemplate(unsigned int,
clang::Parser::ParsedTemplateInfo const&, clang::ParsingDeclRAIIObject&,
clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*)
(/usr/local/clang-trunk/bin/clang-3.9+0x29c99d7)
#14 0x00000000029caf77
clang::Parser::ParseTemplateDeclarationOrSpecialization(unsigned int,
clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*)
(/usr/local/clang-trunk/bin/clang-3.9+0x29caf77)
#15 0x00000000029cb2ea
clang::Parser::ParseDeclarationStartingWithTemplate(unsigned int,
clang::SourceLocation&, clang::AccessSpecifier, clang::AttributeList*)
(/usr/local/clang-trunk/bin/clang-3.9+0x29cb2ea)
#16 0x000000000295d9e4 clang::Parser::ParseDeclaration(unsigned int,
clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&)
(/usr/local/clang-trunk/bin/clang-3.9+0x295d9e4)
#17 0x000000000293c372
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) (/usr/local/clang-trunk/bin/clang-3.9+0x293c372)
#18 0x000000000293cb20
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/usr/local/clang-trunk/bin/clang-3.9+0x293cb20)
#19 0x00000000029340fb clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x29340fb)
#20 0x00000000025d01fe clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-3.9+0x25d01fe)
#21 0x000000000229a76e clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-3.9+0x229a76e)
#22 0x00000000022700e6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-3.9+0x22700e6)
#23 0x00000000023284c2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-3.9+0x23284c2)
#24 0x0000000000aeef38 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-3.9+0xaeef38)
#25 0x0000000000aa3134 main (/usr/local/clang-trunk/bin/clang-3.9+0xaa3134)
#26 0x00007f6e984edec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#27 0x0000000000aeafa4 _start (/usr/local/clang-trunk/bin/clang-3.9+0xaeafa4)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-3.9 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
small.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim
-fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
-fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb
-coverage-file /data2/small.cpp -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/3.9.0 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9/backward
-internal-isystem /usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/3.9.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -std=c++11 -fdeprecated-macro
-fdebug-compilation-dir /data2 -ferror-limit 19 -fmessage-length 154
-fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
-fcolor-diagnostics -o small.o -x c++ small.cpp
1. small.cpp:3:32: current parser token ';'
clang-3.9: error: unable to execute command: Aborted (core dumped)
clang-3.9: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.9.0 (trunk 272507)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
clang-3.9: 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-3.9: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/small-3ba794.cpp
clang-3.9: note: diagnostic msg: /tmp/small-3ba794.sh
clang-3.9: note: diagnostic msg:
********************
$
------------------------------------------
template < typename > void foo ();
template <> void foo < int > () = delete;
template <> void foo < int > ();
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