[llvm-bugs] [Bug 28064] New: clang crashes on valid C++11 code: Assertion `isa<LabelDecl>(D) && "declaration not instantiated in this scope"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Wed Jun 8 22:43:28 PDT 2016
https://llvm.org/bugs/show_bug.cgi?id=28064
Bug ID: 28064
Summary: clang crashes on valid C++11 code: Assertion
`isa<LabelDecl>(D) && "declaration not instantiated in
this scope"' 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.
It is incorrectly rejected by 3.8.x and also crashes at least 3.4 and later.
$ clang++ -v
clang version 3.9.0 (trunk 272125)
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
$
$ g++-6.1 small.cpp
$
$ clang++ -std=c++11 small.cpp
small.cpp:11:40: error: variable 'f' cannot be implicitly captured in a lambda
with no capture-default specified
static void foo (A f = []() { return f; }) {};
^
small.cpp:11:22: note: 'f' declared here
static void foo (A f = []() { return f; }) {};
^
small.cpp:11:26: note: lambda expression begins here
static void foo (A f = []() { return f; }) {};
^
clang-3.9:
/tmp/llvm-builder/llvm-source-trunk/tools/clang/lib/Sema/SemaTemplateInstantiate.cpp:2817:
llvm::PointerUnion<clang::Decl*, llvm::SmallVector<clang::ParmVarDecl*, 4u>*>*
clang::LocalInstantiationScope::findInstantiationOf(const clang::Decl*):
Assertion `isa<LabelDecl>(D) && "declaration not instantiated in this scope"'
failed.
#0 0x0000000001e1c7e5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e1c7e5)
#1 0x0000000001e1a776 llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-3.9+0x1e1a776)
#2 0x0000000001e1a994 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e1a994)
#3 0x00007f6788854340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f6787a72cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f6787a760d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f6787a6bb86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f6787a6bc32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000002f35f84
clang::LocalInstantiationScope::findInstantiationOf(clang::Decl const*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f35f84)
#9 0x0000000002f73b74 clang::Sema::FindInstantiatedDecl(clang::SourceLocation,
clang::NamedDecl*, clang::MultiLevelTemplateArgumentList const&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f73b74)
#10 0x0000000002f34691 (anonymous
namespace)::TemplateInstantiator::TransformDecl(clang::SourceLocation,
clang::Decl*) (/usr/local/clang-trunk/bin/clang-3.9+0x2f34691)
#11 0x0000000002f5b9ad clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformDeclRefExpr(clang::DeclRefExpr*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f5b9ad)
#12 0x0000000002f3ed35 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f3ed35)
#13 0x0000000002f40448 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformInitializer(clang::Expr*, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f40448)
#14 0x0000000002f40691 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformReturnStmt(clang::ReturnStmt*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f40691)
#15 0x0000000002f51685 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformStmt(clang::Stmt*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f51685)
#16 0x0000000002f52714 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformCompoundStmt(clang::CompoundStmt*,
bool) (/usr/local/clang-trunk/bin/clang-3.9+0x2f52714)
#17 0x0000000002f5284b clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformCompoundStmt(clang::CompoundStmt*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f5284b)
#18 0x0000000002f51a33 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformStmt(clang::Stmt*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f51a33)
#19 0x0000000002f3dbaf clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformLambdaExpr(clang::LambdaExpr*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f3dbaf)
#20 0x0000000002f3ea84 clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f3ea84)
#21 0x0000000002f47628 clang::Sema::SubstExpr(clang::Expr*,
clang::MultiLevelTemplateArgumentList const&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2f47628)
#22 0x0000000002cf77a8
clang::Sema::BuildCXXDefaultArgExpr(clang::SourceLocation,
clang::FunctionDecl*, clang::ParmVarDecl*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2cf77a8)
#23 0x0000000002cfd336
clang::Sema::GatherArgumentsForCall(clang::SourceLocation,
clang::FunctionDecl*, clang::FunctionProtoType const*, unsigned int,
llvm::ArrayRef<clang::Expr*>, llvm::SmallVectorImpl<clang::Expr*>&,
clang::Sema::VariadicCallType, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2cfd336)
#24 0x0000000002cfe2e9 clang::Sema::ConvertArgumentsForCall(clang::CallExpr*,
clang::Expr*, clang::FunctionDecl*, clang::FunctionProtoType const*,
llvm::ArrayRef<clang::Expr*>, clang::SourceLocation, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2cfe2e9)
#25 0x0000000002cff31d clang::Sema::BuildResolvedCallExpr(clang::Expr*,
clang::NamedDecl*, clang::SourceLocation, llvm::ArrayRef<clang::Expr*>,
clang::SourceLocation, clang::Expr*, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2cff31d)
#26 0x0000000002cffdbb clang::Sema::ActOnCallExpr(clang::Scope*, clang::Expr*,
clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>,
clang::SourceLocation, clang::Expr*, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2cffdbb)
#27 0x000000000296c85a
clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*,
true>) (/usr/local/clang-trunk/bin/clang-3.9+0x296c85a)
#28 0x00000000029671e8 clang::Parser::ParseCastExpression(bool, bool, bool&,
clang::Parser::TypeCastState) (/usr/local/clang-trunk/bin/clang-3.9+0x29671e8)
#29 0x0000000002969d4d clang::Parser::ParseCastExpression(bool, bool,
clang::Parser::TypeCastState) (/usr/local/clang-trunk/bin/clang-3.9+0x2969d4d)
#30 0x0000000002969dd9
clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState)
(/usr/local/clang-trunk/bin/clang-3.9+0x2969dd9)
#31 0x0000000002969e59
clang::Parser::ParseExpression(clang::Parser::TypeCastState)
(/usr/local/clang-trunk/bin/clang-3.9+0x2969e59)
#32 0x00000000029aadb6 clang::Parser::ParseExprStatement()
(/usr/local/clang-trunk/bin/clang-3.9+0x29aadb6)
#33 0x00000000029a82cf
clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*,
32u>&, clang::Parser::AllowedContsructsKind, clang::SourceLocation*,
clang::Parser::ParsedAttributesWithRange&)
(/usr/local/clang-trunk/bin/clang-3.9+0x29a82cf)
#34 0x00000000029a843e
clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*,
32u>&, clang::Parser::AllowedContsructsKind, clang::SourceLocation*)
(/usr/local/clang-trunk/bin/clang-3.9+0x29a843e)
#35 0x00000000029acab9 clang::Parser::ParseCompoundStatementBody(bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x29acab9)
#36 0x00000000029af3c1 clang::Parser::ParseFunctionStatementBody(clang::Decl*,
clang::Parser::ParseScope&) (/usr/local/clang-trunk/bin/clang-3.9+0x29af3c1)
#37 0x000000000292dfee
clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*)
(/usr/local/clang-trunk/bin/clang-3.9+0x292dfee)
#38 0x000000000294dd1d clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&,
unsigned int, clang::SourceLocation*, clang::Parser::ForRangeInit*)
(/usr/local/clang-trunk/bin/clang-3.9+0x294dd1d)
#39 0x0000000002929b2d
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang-3.9+0x2929b2d)
#40 0x000000000292a1d1
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier) [clone .part.222]
(/usr/local/clang-trunk/bin/clang-3.9+0x292a1d1)
#41 0x000000000292a20f
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang-3.9+0x292a20f)
#42 0x000000000292efc0
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) (/usr/local/clang-trunk/bin/clang-3.9+0x292efc0)
#43 0x000000000292f790
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/usr/local/clang-trunk/bin/clang-3.9+0x292f790)
#44 0x0000000002926d6b clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x2926d6b)
#45 0x00000000025c5f3e clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-3.9+0x25c5f3e)
#46 0x0000000002291eae clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-3.9+0x2291eae)
#47 0x0000000002267916
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2267916)
#48 0x000000000231f012
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-3.9+0x231f012)
#49 0x0000000000aec798 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-3.9+0xaec798)
#50 0x0000000000aa0f8e main (/usr/local/clang-trunk/bin/clang-3.9+0xaa0f8e)
#51 0x00007f6787a5dec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#52 0x0000000000ae8804 _start (/usr/local/clang-trunk/bin/clang-3.9+0xae8804)
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
-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 /tmp/small-02c65b.o -x c++ small.cpp
1. small.cpp:17:19: current parser token ')'
2. small.cpp:16:1: parsing function body 'main'
3. small.cpp:16:1: in compound statement ('{}')
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 272125)
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-2f6a28.cpp
clang-3.9: note: diagnostic msg: /tmp/small-2f6a28.sh
clang-3.9: note: diagnostic msg:
********************
$
--------------------------------------------------
int f;
struct A
{
template < class T > A (T) {};
};
template < typename >
struct B
{
static void foo (A f = []() { return f; }) {};
};
int
main ()
{
B < int >::foo ();
return 0;
}
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