[llvm-bugs] [Bug 28174] New: clang crashes on C++11 code with invalid use of decltype: Assertion `CachedTokens[CachedLexPos-1].getLastLoc() == Tok.getAnnotationEndLoc() && "The annotation should be until the most recent cached token"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri Jun 17 10:54:00 PDT 2016
https://llvm.org/bugs/show_bug.cgi?id=28174
Bug ID: 28174
Summary: clang crashes on C++11 code with invalid use of
decltype: Assertion
`CachedTokens[CachedLexPos-1].getLastLoc() ==
Tok.getAnnotationEndLoc() && "The annotation should be
until the most recent cached token"' 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 C++11 test case on
x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 3.8.x.
$ clang++ -v
clang version 3.9.0 (trunk 272993)
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++ -c -std=c++11 small.cpp
small.cpp:4:19: error: expected '(' after 'decltype'
void foo (decltype x);
^
(
clang-3.9:
/tmp/llvm-builder/llvm-source-trunk/tools/clang/lib/Lex/PPCaching.cpp:101: void
clang::Preprocessor::AnnotatePreviousCachedTokens(const clang::Token&):
Assertion `CachedTokens[CachedLexPos-1].getLastLoc() ==
Tok.getAnnotationEndLoc() && "The annotation should be until the most recent
cached token"' failed.
#0 0x0000000001d1b425 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d1b425)
#1 0x0000000001d192b6 llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-3.9+0x1d192b6)
#2 0x0000000001d194d4 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d194d4)
#3 0x00007f7df46c0340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f7df38decc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f7df38e20d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f7df38d7b86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f7df38d7c32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000003443736
clang::Preprocessor::AnnotatePreviousCachedTokens(clang::Token const&)
(/usr/local/clang-trunk/bin/clang-3.9+0x3443736)
#9 0x000000000284510c
clang::Parser::ParseOptionalCXXScopeSpecifier(clang::CXXScopeSpec&,
clang::OpaquePtr<clang::QualType>, bool, bool*, bool, clang::IdentifierInfo**)
(/usr/local/clang-trunk/bin/clang-3.9+0x284510c)
#10 0x00000000027f97a5 clang::Parser::TryAnnotateTypeOrScopeToken(bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x27f97a5)
#11 0x0000000002889bbc
clang::Parser::isCXXDeclarationSpecifier(clang::Parser::TPResult, bool*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2889bbc)
#12 0x000000000288bd08 clang::Parser::TryParseParameterDeclarationClause(bool*,
bool) (/usr/local/clang-trunk/bin/clang-3.9+0x288bd08)
#13 0x000000000288bfe9 clang::Parser::isCXXFunctionDeclarator(bool*)
(/usr/local/clang-trunk/bin/clang-3.9+0x288bfe9)
#14 0x000000000281c7c6 clang::Parser::ParseDirectDeclarator(clang::Declarator&)
(/usr/local/clang-trunk/bin/clang-3.9+0x281c7c6)
#15 0x00000000028138e3
clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void
(clang::Parser::*)(clang::Declarator&))
(/usr/local/clang-trunk/bin/clang-3.9+0x28138e3)
#16 0x0000000002814b52 clang::Parser::ParseDeclarator(clang::Declarator&)
(/usr/local/clang-trunk/bin/clang-3.9+0x2814b52)
#17 0x0000000002816c26 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&,
unsigned int, clang::SourceLocation*, clang::Parser::ForRangeInit*)
(/usr/local/clang-trunk/bin/clang-3.9+0x2816c26)
#18 0x00000000027f330d
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang-3.9+0x27f330d)
#19 0x00000000027f39b1
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier) [clone .part.222]
(/usr/local/clang-trunk/bin/clang-3.9+0x27f39b1)
#20 0x00000000027f39ef
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang-3.9+0x27f39ef)
#21 0x00000000027f8860
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) (/usr/local/clang-trunk/bin/clang-3.9+0x27f8860)
#22 0x00000000027f9030
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/usr/local/clang-trunk/bin/clang-3.9+0x27f9030)
#23 0x00000000027f065b clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x27f065b)
#24 0x0000000002486d3e clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-3.9+0x2486d3e)
#25 0x00000000021977fe clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-3.9+0x21977fe)
#26 0x000000000216d266
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-3.9+0x216d266)
#27 0x00000000022245c2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-3.9+0x22245c2)
#28 0x0000000000af0548 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-3.9+0xaf0548)
#29 0x0000000000aa46dc main (/usr/local/clang-trunk/bin/clang-3.9+0xaa46dc)
#30 0x00007f7df38c9ec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#31 0x0000000000aec5b4 _start (/usr/local/clang-trunk/bin/clang-3.9+0xaec5b4)
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/c-hunter/test/fun/try5b/llvm-source/RES8/20160616-clang++-trunk-O0-m32-build-053959/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/c-hunter/test/fun/try5b/llvm-source/RES8/20160616-clang++-trunk-O0-m32-build-053959
-ferror-limit 19 -fmessage-length 226 -fobjc-runtime=gcc -fcxx-exceptions
-fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o small.o -x c++
small.cpp
1. small.cpp:4:11: at annotation 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 272993)
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-5f4458.cpp
clang-3.9: note: diagnostic msg: /tmp/small-5f4458.sh
clang-3.9: note: diagnostic msg:
********************
$
---------------------------------------
int x;
// should be: void foo (decltype (x));
void foo (decltype x);
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