[cfe-dev] [llvm-dev] trivial input provokes failed assertion in Parser.h:322
Volodymyr Sapsai via cfe-dev
cfe-dev at lists.llvm.org
Tue Apr 3 10:36:08 PDT 2018
I believe https://reviews.llvm.org/D44449 <https://reviews.llvm.org/D44449> should fix this issue.
Thanks,
Volodymyr
> On Apr 2, 2018, at 22:51, Shoaib Meenai via cfe-dev <cfe-dev at lists.llvm.org> wrote:
>
> Adding cfe-dev, since this is a clang issue.
>
> From: llvm-dev <llvm-dev-bounces at lists.llvm.org <mailto:llvm-dev-bounces at lists.llvm.org>> on behalf of Jim Meyering via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>>
> Reply-To: Jim Meyering <jim at meyering.net <mailto:jim at meyering.net>>
> Date: Monday, April 2, 2018 at 8:40 PM
> To: "llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>" <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>>
> Subject: [llvm-dev] trivial input provokes failed assertion in Parser.h:322
>
> While attempting to reduce a ubsan-specific bug, I stumbled upon the following. <>
> [I would have filed a bug report, but don't have an account, and so
> requested one per https://urldefense.proofpoint.com/v2/url?u=https-3A__bugs.llvm.org_&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=R7rHNXVz33pSWF-LHSh3QPvscmWjtF3epbTUw2ufAVc&s=RfIC9dWnWb3gOLdPM-6SkfL2fbaalJuQueD53kQUo2Y&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__bugs.llvm.org_&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=R7rHNXVz33pSWF-LHSh3QPvscmWjtF3epbTUw2ufAVc&s=RfIC9dWnWb3gOLdPM-6SkfL2fbaalJuQueD53kQUo2Y&e=> about 7 hours ago -- but
> still no response, so am sending this instead. ]
> Using clang built from latest master of about 5 hours ago:
>
> $ echo struct a typename a | clang -x c++ -
> <stdin>:1:19: error: expected a qualified name after 'typename'
> struct a typename a
> ^
> <stdin>:1:19: error: cannot combine with previous 'struct' declaration specifier
> clang-7: ../tools/clang/include/clang/Parse/Parser.h:322:
> clang::SourceLocation clang::Parser::ConsumeToken(): Assertion
> `!isTokenSpecial() && "Should consume special tokens with
> Consume*Token"' failed.
> #0 0x0000000000e7cf57 __interceptor_backtrace (/dev/shm/c3/bin/clang-7+0xe7cf57)
> #1 0x0000000002efc913 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
> /data/users/meyering/fbsource/fbcode/llvm/build/../lib/Support/Unix/Signals.inc:398:13
> #2 0x0000000002efa0d5 llvm::sys::RunSignalHandlers()
> /data/users/meyering/fbsource/fbcode/llvm/lib/Support/Signals.cpp:49:16
> #3 0x0000000002efd13b SignalHandler(int)
> /data/users/meyering/fbsource/fbcode/llvm/build/../lib/Support/Unix/Signals.inc:242:3
> #4 0x00007f72e1ce0ad0 __restore_rt
> (/usr/local/fbcode/gcc-5-glibc-2.23/lib/libpthread.so.0+0x11ad0)
> #5 0x00007f72e08387c8 __GI_raise
> /home/engshare/third-party2/glibc/2.23/src/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
> #6 0x00007f72e083a591 __GI_abort
> /home/engshare/third-party2/glibc/2.23/src/glibc-2.23/stdlib/abort.c:91:0
> #7 0x00007f72e0830d15 __assert_fail_base
> /home/engshare/third-party2/glibc/2.23/src/glibc-2.23/assert/assert.c:92:0
> #8 0x00007f72e0830dc3 (/usr/local/fbcode/gcc-5-glibc-2.23/lib/libc.so.6+0x2ddc3)
> #9 0x0000000005c811c6 clang::Parser::ConsumeToken()
> /data/users/meyering/fbsource/fbcode/llvm/build/../tools/clang/include/clang/Parse/Parser.h:324:5
> #10 0x0000000005caa09b
> clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
> clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
> clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/ParseDecl.cpp:0:7
> #11 0x0000000005c79d61
> clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
> clang::ParsingDeclSpec&, clang::AccessSpecifier)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/Parser.cpp:922:3
> #12 0x0000000005c797e4
> clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
> clang::ParsingDeclSpec*, clang::AccessSpecifier)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/Parser.cpp:1028:12
> #13 0x0000000005c782c0
> clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
> clang::ParsingDeclSpec*)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/Parser.cpp:853:12
> #14 0x0000000005c77143
> clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/Parser.cpp:609:10
> #15 0x0000000005c76c2f
> clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/Parser.cpp:535:26
> #16 0x0000000005c70f83 clang::ParseAST(clang::Sema&, bool, bool)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Parse/ParseAST.cpp:151:3
> #17 0x0000000004621c94 clang::CodeGenAction::ExecuteAction()
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp:1044:1
> #18 0x0000000003dff1d2 clang::FrontendAction::Execute()
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Frontend/FrontendAction.cpp:908:10
> #19 0x0000000003d69d87
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp:990:11
> #20 0x0000000003f83d38
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:255:25
> #21 0x0000000000f7ff51 cc1_main(llvm::ArrayRef<char const*>, char
> const*, void*) /data/users/meyering/fbsource/fbcode/llvm/tools/clang/tools/driver/cc1_main.cpp:221:13
> #22 0x0000000000f70133 ExecuteCC1Tool(llvm::ArrayRef<char const*>,
> llvm::StringRef)
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/tools/driver/driver.cpp:310:12
> #23 0x0000000000f6fdb8 main
> /data/users/meyering/fbsource/fbcode/llvm/tools/clang/tools/driver/driver.cpp:390:12
> #24 0x00007f72e0823858 __libc_start_main
> /home/engshare/third-party2/glibc/2.23/src/glibc-2.23/csu/../csu/libc-start.c:323:0
> #25 0x0000000000e4e659 _start
> /home/engshare/third-party2/glibc/2.23/src/glibc-2.23/csu/../sysdeps/x86_64/start.S:121:0
> Stack dump:
> 0. Program arguments: /dev/shm/c3/bin/clang-7 -cc1 -triple
> x86_64-facebook-linux -emit-obj -mrelax-all -disable-free
> -main-file-name - -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 /dev/shm/c3/lib/clang/7.0.0
> -internal-isystem
> /usr/lib/gcc/x86_64-redhat-linux/4.8.5/../../../../include/c++/4.8.5
> -internal-isystem
> /usr/lib/gcc/x86_64-redhat-linux/4.8.5/../../../../include/c++/4.8.5/x86_64-redhat-linux
> -internal-isystem
> /usr/lib/gcc/x86_64-redhat-linux/4.8.5/../../../../include/c++/4.8.5/backward
> -internal-isystem /usr/local/include -internal-isystem
> /dev/shm/c3/lib/clang/7.0.0/include -internal-externc-isystem /include
> -internal-externc-isystem /usr/include -fdeprecated-macro
> -fdebug-compilation-dir /data/users/meyering/x -ferror-limit 19
> -fmessage-length 252 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
> -fdiagnostics-show-option -fcolor-diagnostics -o
> /dev/shm/jt-3wYtRx/--8fb7b9.o -x c++ -
> 1. <stdin>:1:19: at annotation token
> clang-7: error: unable to execute command: Aborted (core dumped)
> clang-7: error: clang frontend command failed due to signal (use -v to
> see invocation)
> clang version 7.0.0
> (ssh://git.vip.facebook.com/data/gitrepos/llvm/clang.git <ssh://git.vip.facebook.com/data/gitrepos/llvm/clang.git>
> eadc8a81ef3df4c986bd9b0f6676e0e49646fa0f) (llvm/llvm.git
> 755a2196409460fc1f29f638a005d2d43948eb45)
> Target: x86_64-facebook-linux
> Thread model: posix
> InstalledDir: /t/c3/bin
> clang-7: note: diagnostic msg: PLEASE submit a bug report to
> https://urldefense.proofpoint.com/v2/url?u=https-3A__bugs.llvm.org_&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=R7rHNXVz33pSWF-LHSh3QPvscmWjtF3epbTUw2ufAVc&s=RfIC9dWnWb3gOLdPM-6SkfL2fbaalJuQueD53kQUo2Y&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__bugs.llvm.org_&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=R7rHNXVz33pSWF-LHSh3QPvscmWjtF3epbTUw2ufAVc&s=RfIC9dWnWb3gOLdPM-6SkfL2fbaalJuQueD53kQUo2Y&e=> and include the crash backtrace, preprocessed
> source, and associated run script.
> clang-7: note: diagnostic msg: Error generating preprocessed source(s)
> - ignoring input from stdin.
> clang-7: note: diagnostic msg: Error generating preprocessed source(s)
> - no preprocessable inputs.
> [Exit 254 (126)]
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