[llvm-bugs] [Bug 49168] New: Assertion `DS.getAttributes().empty() && "No attribute expected"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri Feb 12 13:31:28 PST 2021
https://bugs.llvm.org/show_bug.cgi?id=49168
Bug ID: 49168
Summary: Assertion `DS.getAttributes().empty() && "No attribute
expected"' failed
Product: clang
Version: 11.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangbugs at nondot.org
Reporter: zhan3299 at purdue.edu
CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
neeilans at live.com, richard-llvm at metafoo.co.uk
Hi,
An assertion failed on /llvm-project/clang/lib/Sema/SemaDecl.cpp. Built on
Ubuntu 18.04, x86-64. Detailed information is attached below.
=== detailed information ===
$ ./clang poc.cc
poc.cc:1:27: error: expected '}'
__attribute__((a)) union {
^
poc.cc:1:26: note: to match this '{'
__attribute__((a)) union {
^
poc.cc:1:27: error: expected ';' after union
__attribute__((a)) union {
^
;
poc.cc:1:20: error: anonymous unions at namespace or global scope must be
declared 'static'
__attribute__((a)) union {
^
static
poc.cc:1:1: warning: declaration does not declare anything
[-Wmissing-declarations]
__attribute__((a)) union {
^
clang-11: /home/xxx/data/git/llvm-project/clang/lib/Sema/SemaDecl.cpp:5188:
clang::Decl *clang::Sema::BuildAnonymousStructOrUnion(clang::Scope *,
clang::DeclSpec &, clang::AccessSpecifier, clang::RecordDecl *, const
clang::PrintingPolicy &): Assertion `DS.getAttributes().empty() && "No
attribute expected"' 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: /data/xxx/git/llvm-project/build/bin/clang-11 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-main-file-name poc.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
/data/xxx/git/llvm-project/build/lib/clang/11.1.0 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/backward
-internal-isystem /usr/local/include -internal-isystem
/data/xxx/git/llvm-project/build/lib/clang/11.1.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdeprecated-macro -fdebug-compilation-dir /data/xxx/docker_share/clang/11.x
-ferror-limit 19 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions
-fcolor-diagnostics -faddrsig -o /tmp/poc-a96549.o -x c++ poc.cc
1. <eof> parser at end of file
#0 0x0000000006e97306 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/xxx/data/git/llvm-project/llvm/lib/Support/Unix/Signals.inc:560:7
#1 0x0000000006e9266e llvm::sys::RunSignalHandlers()
/home/xxx/data/git/llvm-project/llvm/lib/Support/Signals.cpp:69:18
#2 0x0000000006e97caa SignalHandler(int)
/home/xxx/data/git/llvm-project/llvm/lib/Support/Unix/Signals.inc:396:3
#3 0x00007fa5d28938a0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x128a0)
#4 0x00007fa5d1559f47 gsignal
/build/glibc-2ORdQG/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007fa5d155b8b1 abort /build/glibc-2ORdQG/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007fa5d154b42a __assert_fail_base
/build/glibc-2ORdQG/glibc-2.27/assert/assert.c:89:0
#7 0x00007fa5d154b4a2 (/lib/x86_64-linux-gnu/libc.so.6+0x304a2)
#8 0x000000000cea3434 llvm::cast_retty<clang::FieldDecl,
clang::NamedDecl*>::ret_type llvm::cast<clang::FieldDecl,
clang::NamedDecl>(clang::NamedDecl*)
/home/xxx/data/git/llvm-project/llvm/include/llvm/Support/Casting.h:269:3
#9 0x000000000cea3434 clang::Sema::BuildAnonymousStructOrUnion(clang::Scope*,
clang::DeclSpec&, clang::AccessSpecifier, clang::RecordDecl*,
clang::PrintingPolicy const&)
/home/xxx/data/git/llvm-project/clang/lib/Sema/SemaDecl.cpp:5176:0
#10 0x000000000ce9ac6c clang::Sema::ParsedFreeStandingDeclSpec(clang::Scope*,
clang::AccessSpecifier, clang::DeclSpec&,
llvm::MutableArrayRef<clang::TemplateParameterList*>, bool,
clang::RecordDecl*&)
/home/xxx/data/git/llvm-project/clang/lib/Sema/SemaDecl.cpp:4657:16
#11 0x000000000ce99126 clang::Sema::ParsedFreeStandingDeclSpec(clang::Scope*,
clang::AccessSpecifier, clang::DeclSpec&, clang::RecordDecl*&)
/home/xxx/data/git/llvm-project/clang/lib/Sema/SemaDecl.cpp:4334:10
#12 0x000000000c82f9c0 clang::ParsingDeclSpec::complete(clang::Decl*)
/home/xxx/data/git/llvm-project/clang/include/clang/Parse/RAIIObjectsForParser.h:0:0
#13 0x000000000c82f9c0
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
/home/xxx/data/git/llvm-project/clang/lib/Parse/Parser.cpp:1046:0
#14 0x000000000c82e939
clang::Parser::ObjCDeclContextSwitch::~ObjCDeclContextSwitch()
/home/xxx/data/git/llvm-project/clang/include/clang/Parse/Parser.h:0:0
#15 0x000000000c82e939
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier)
/home/xxx/data/git/llvm-project/clang/lib/Parse/Parser.cpp:1116:0
#16 0x000000000c82c6a1
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*)
/home/xxx/data/git/llvm-project/clang/lib/Parse/Parser.cpp:935:12
#17 0x000000000c827ecc
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool)
/home/xxx/data/git/llvm-project/clang/lib/Parse/Parser.cpp:683:10
#18 0x000000000c826ccc
clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
/home/xxx/data/git/llvm-project/clang/lib/Parse/Parser.cpp:555:26
#19 0x000000000c81cf4a clang::ParseAST(clang::Sema&, bool, bool)
/home/xxx/data/git/llvm-project/clang/lib/Parse/ParseAST.cpp:157:15
#20 0x000000000861c2a2 clang::ASTFrontendAction::ExecuteAction()
/home/xxx/data/git/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1059:1
#21 0x00000000099decd8 clang::CodeGenAction::ExecuteAction()
/home/xxx/data/git/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:1184:28
#22 0x000000000861a51a clang::FrontendAction::Execute()
/home/xxx/data/git/llvm-project/clang/lib/Frontend/FrontendAction.cpp:954:10
#23 0x000000000854eaa7 llvm::Error::operator bool()
/home/xxx/data/git/llvm-project/llvm/include/llvm/Support/Error.h:0:0
#24 0x000000000854eaa7
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
/home/xxx/data/git/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:984:0
#25 0x00000000088f183f clang::CompilerInstance::getFrontendOpts()
/home/xxx/data/git/llvm-project/clang/include/clang/Frontend/CompilerInstance.h:0:0
#26 0x00000000088f183f
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
/home/xxx/data/git/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:279:0
#27 0x0000000000b094cc llvm::TimeTraceScope::~TimeTraceScope()
/home/xxx/data/git/llvm-project/llvm/include/llvm/Support/TimeProfiler.h:0:0
#28 0x0000000000b094cc cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) /home/xxx/data/git/llvm-project/clang/tools/driver/cc1_main.cpp:241:0
#29 0x0000000000afaf3b ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
/home/xxx/data/git/llvm-project/clang/tools/driver/driver.cpp:330:12
#30 0x0000000000af6966 main
/home/xxx/data/git/llvm-project/clang/tools/driver/driver.cpp:407:12
#31 0x00007fa5d153cb97 __libc_start_main
/build/glibc-2ORdQG/glibc-2.27/csu/../csu/libc-start.c:344:0
#32 0x0000000000af38ea _start
(/data/xxx/git/llvm-project/build/bin/clang-11+0xaf38ea)
clang-11: error: unable to execute command: Aborted (core dumped)
clang-11: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 11.1.0 (https://github.com/llvm/llvm-project.git
1fdec59bffc11ae37eb51a1b9869f0696bfd5312)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /data/xxx/git/llvm-project/build/bin
clang-11: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-11: note: diagnostic msg: /tmp/poc-871f06.cpp
clang-11: note: diagnostic msg: /tmp/poc-871f06.sh
clang-11: note: diagnostic msg:
********************
$ cat /tmp/poc-871f06.cpp
# 1 "<built-in>"
# 1 "poc.cc"
__attribute__((a)) union {
$ cat /tmp/poc-871f06.sh
# Crash reproducer for clang version 11.1.0
(https://github.com/llvm/llvm-project.git
1fdec59bffc11ae37eb51a1b9869f0696bfd5312)
# Driver args: "poc.cc"
# Original command: "/data/xxx/git/llvm-project/build/bin/clang-11" "-cc1"
"-triple" "x86_64-unknown-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free"
"-main-file-name" "poc.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" "/data/xxx/git/llvm-project/build/lib/clang/11.1.0"
"-internal-isystem"
"/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0"
"-internal-isystem"
"/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0"
"-internal-isystem"
"/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0"
"-internal-isystem"
"/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/backward"
"-internal-isystem" "/usr/local/include" "-internal-isystem"
"/data/xxx/git/llvm-project/build/lib/clang/11.1.0/include"
"-internal-externc-isystem" "/usr/include/x86_64-linux-gnu"
"-internal-externc-isystem" "/include" "-internal-externc-isystem"
"/usr/include" "-fdeprecated-macro" "-fdebug-compilation-dir"
"/data/xxx/docker_share/clang/11.x" "-ferror-limit" "19" "-fgnuc-version=4.2.1"
"-fcxx-exceptions" "-fexceptions" "-fcolor-diagnostics" "-faddrsig" "-o"
"/tmp/poc-a96549.o" "-x" "c++" "poc.cc"
"/data/xxx/git/llvm-project/build/bin/clang-11" "-cc1" "-triple"
"x86_64-unknown-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free"
"-main-file-name" "poc.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"
"-fdeprecated-macro" "-ferror-limit" "19" "-fgnuc-version=4.2.1"
"-fcxx-exceptions" "-fexceptions" "-fcolor-diagnostics" "-faddrsig" "-x" "c++"
"poc-871f06.cpp"
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