[llvm-bugs] [Bug 46987] New: Clang crashed in clang/include/clang/AST/Type.h:676: const clang::ExtQualsTypeCommonBase *clang::QualType::getCommonPtr() const: Assertion '!isNull() && "Cannot retrieve a NULL type pointer"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Tue Aug 4 08:43:03 PDT 2020
https://bugs.llvm.org/show_bug.cgi?id=46987
Bug ID: 46987
Summary: Clang crashed in clang/include/clang/AST/Type.h:676:
const clang::ExtQualsTypeCommonBase
*clang::QualType::getCommonPtr() const: Assertion
'!isNull() && "Cannot retrieve a NULL type pointer"'
failed
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Keywords: crash-on-invalid
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangbugs at nondot.org
Reporter: haoxintu at gmail.com
CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
richard-llvm at metafoo.co.uk
Hi, all.
This small invalid code makes Clang-6.0 onwards versions crashed.
Input:
//small.cc
template <typename> alignas (enum a{})
~a ()()() -> auto;
Command:
clang++ small.cc
Output in trunk:
small.cc:1:35: error: 'a' cannot be defined in a type specifier
template <typename> alignas (enum a{})
^
error: function with trailing return type must specify return type 'auto', not
'void'
small.cc:2:1: error: destructor must be a non-static member function
~a ()()() -> auto;
^
small.cc:2:1: error: destructor cannot be declared as a template
error: function cannot return function type 'auto () -> auto'
clang-12:
/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/clang/include/clang/AST/Type.h:676:
const clang::ExtQualsTypeCommonBase *clang::QualType::getCommonPtr() const:
Assertion `!isNull() && "Cannot retrieve a NULL type pointer"' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments:
/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-main-file-name small.cc -mrelocation-model static -mframe-pointer=all
-fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables
-target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir
/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/lib/clang/12.0.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/backward
-internal-isystem /usr/local/include -internal-isystem
/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/lib/clang/12.0.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdeprecated-macro -fdebug-compilation-dir /home/haoxin/test/clang-bug
-ferror-limit 19 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions
-fcolor-diagnostics -faddrsig -o /tmp/small-32884e.o -x c++ small.cc
1. small.cc:2:18: current parser token ';'
#0 0x0000000002758f44 PrintStackTraceSignalHandler(void*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2758f44)
#1 0x0000000002756b4e llvm::sys::RunSignalHandlers()
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2756b4e)
#2 0x0000000002759265 SignalHandler(int)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2759265)
#3 0x00007f3fc93b5390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#4 0x00007f3fc7f1f438 raise
/build/glibc-e6zv40/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#5 0x00007f3fc7f2103a abort /build/glibc-e6zv40/glibc-2.23/stdlib/abort.c:91:0
#6 0x00007f3fc7f17be7 __assert_fail_base
/build/glibc-e6zv40/glibc-2.23/assert/assert.c:92:0
#7 0x00007f3fc7f17c92 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc92)
#8 0x0000000004a055ff
clang::ASTContext::getFunctionTypeInternal(clang::QualType,
llvm::ArrayRef<clang::QualType>, clang::FunctionProtoType::ExtProtoInfo const&,
bool) const
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x4a055ff)
#9 0x00000000041f6c59 clang::Sema::ActOnFunctionDeclarator(clang::Scope*,
clang::Declarator&, clang::DeclContext*, clang::TypeSourceInfo*,
clang::LookupResult&, llvm::MutableArrayRef<clang::TemplateParameterList*>,
bool&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x41f6c59)
#10 0x00000000041f2b76 clang::Sema::HandleDeclarator(clang::Scope*,
clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x41f2b76)
#11 0x000000000470d9f8 clang::Sema::ActOnTemplateDeclarator(clang::Scope*,
llvm::MutableArrayRef<clang::TemplateParameterList*>, clang::Declarator&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x470d9f8)
#12 0x0000000003fe25e2
clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fe25e2)
#13 0x0000000003fe37fb
clang::Parser::ParseDeclarationAfterDeclarator(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fe37fb)
#14 0x0000000004075200
clang::Parser::ParseSingleDeclarationAfterTemplate(clang::DeclaratorContext,
clang::Parser::ParsedTemplateInfo const&, clang::ParsingDeclRAIIObject&,
clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x4075200)
#15 0x0000000004073f20
clang::Parser::ParseTemplateDeclarationOrSpecialization(clang::DeclaratorContext,
clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x4073f20)
#16 0x000000000407382e
clang::Parser::ParseDeclarationStartingWithTemplate(clang::DeclaratorContext,
clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x407382e)
#17 0x0000000003fdba00
clang::Parser::ParseDeclaration(clang::DeclaratorContext,
clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&,
clang::SourceLocation*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fdba00)
#18 0x0000000003fc35ba
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fc35ba)
#19 0x0000000003fc1f7d
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fc1f7d)
#20 0x0000000003fc17c7
clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fc17c7)
#21 0x0000000003fbd27e clang::ParseAST(clang::Sema&, bool, bool)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x3fbd27e)
#22 0x0000000002f2a393 clang::FrontendAction::Execute()
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2f2a393)
#23 0x0000000002ec4ea3
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2ec4ea3)
#24 0x0000000002fd43b2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x2fd43b2)
#25 0x0000000000983453 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x983453)
#26 0x00000000009818ec ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x9818ec)
#27 0x0000000000981594 main
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x981594)
#28 0x00007f3fc7f0a840 __libc_start_main
/build/glibc-e6zv40/glibc-2.23/csu/../csu/libc-start.c:325:0
#29 0x000000000097e5a9 _start
(/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin/clang-12+0x97e5a9)
clang-12: error: unable to execute command: Aborted (core dumped)
clang-12: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 12.0.0
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/home/haoxin/corpus-compilers/llvm-trunk/llvm-project-master/build/bin
clang-12: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-12: note: diagnostic msg: /tmp/small-c1f37f.cpp
clang-12: note: diagnostic msg: /tmp/small-c1f37f.sh
clang-12: note: diagnostic msg:
********************
Thanks,
Haoxin
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