clang crashes on x86_64-linux-gnu at O1 and above in 32-bit and 64-bit modes (Assertion `Offset <= PieceOffset && "overlapping or duplicate pieces"' failed) #26522
Comments
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*** This bug has been marked as a duplicate of bug llvm/llvm-bugzilla-archive#26163 *** |
Hi David, This bug was reported one day earlier than llvm/llvm-bugzilla-archive#26163 . May I know why this bug was resolved as a duplicate of that one? |
llvm/llvm-bugzilla-archive#26163 was already marked as fixed, I figured that marking #26522 as duplicate would generate less email than marking #26522 as fixed and llvm/llvm-bugzilla-archive#26163 as the duplicate. This would also be a little weird to anyone investigating the chronology of r257979 seeing as how it refers to llvm/llvm-bugzilla-archive#26163 , not #26522 . |
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I encounter this bug again. As the test case is similar to what I have reported, so I just reopen this bug report. $: clang-trunk -v
clang-3.9: error: unable to execute command: Aborted (core dumped) PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: $: cat small.c int main() { return 0; } |
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+Keno who looked at llvm/llvm-bugzilla-archive#26163 |
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Thanks, I'll take a look tomorrow. |
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Patch at http://reviews.llvm.org/D16742. |
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Landed as r259696. Which reminds me that this probably needs to be put on the release branch if it hasn't already. |
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mentioned in issue llvm/llvm-bugzilla-archive#26163 |
Extended Description
The following code crashes clang trunk at -O1 and above in both 32-bit and 64-bit modes.
$: clang-trunk -v
clang version 3.9.0 (trunk 257643)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/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/5.2.1
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/4.8.4
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/5.2.1
Found candidate GCC installation: /usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.6.3
Found candidate GCC installation: /usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.7.4
Found candidate GCC installation: /usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.8.2
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-trunk -O1 -g small.c
clang: /tmp/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1561: void llvm::DebugLocEntry::finalize(const llvm::AsmPrinter &, DebugLocStream::ListBuilder &, const llvm::DIBasicType ): Assertion `Offset <= PieceOffset && "overlapping or duplicate pieces"' failed.
0 clang 0x0000000003095008 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1 clang 0x0000000003095777
2 libpthread.so.0 0x00007f7473224340
3 libc.so.6 0x00007f747222ecc9 gsignal + 57
4 libc.so.6 0x00007f74722320d8 abort + 328
5 libc.so.6 0x00007f7472227b86
6 libc.so.6 0x00007f7472227c32
7 clang 0x000000000265c65a llvm::DebugLocEntry::finalize(llvm::AsmPrinter const&, llvm::DebugLocStream::ListBuilder&, llvm::DIBasicType const) + 906
8 clang 0x000000000265bde7 llvm::DwarfDebug::collectVariableInfo(llvm::DwarfCompileUnit&, llvm::DISubprogram const*, llvm::DenseSet<std::pair<llvm::DILocalVariable const*, llvm::DILocation const*>, llvm::DenseMapInfo<std::pair<llvm::DILocalVariable const*, llvm::DILocation const*> > >&) + 1063
9 clang 0x000000000265dd90 llvm::DwarfDebug::endFunction(llvm::MachineFunction const*) + 352
10 clang 0x000000000263e231 llvm::AsmPrinter::EmitFunctionBody() + 7025
11 clang 0x0000000002318b98
12 clang 0x000000000273e089 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 153
13 clang 0x0000000002fd90d4 llvm::FPPassManager::runOnFunction(llvm::Function&) + 564
14 clang 0x0000000002fd931b llvm::FPPassManager::runOnModule(llvm::Module&) + 43
15 clang 0x0000000002fd97e5 llvm::legacy::PassManagerImpl::run(llvm::Module&) + 869
16 clang 0x0000000000a168dd clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_pwrite_stream*) + 9693
17 clang 0x00000000009f6f38
18 clang 0x0000000000cab776 clang::ParseAST(clang::Sema&, bool, bool) + 582
19 clang 0x0000000000789d35 clang::FrontendAction::Execute() + 69
20 clang 0x0000000000752d91 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 1153
21 clang 0x00000000007318dc clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 3068
22 clang 0x00000000007277a8 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) + 1176
23 clang 0x000000000072ff93 main + 12707
24 libc.so.6 0x00007f7472219ec5 __libc_start_main + 245
25 clang 0x0000000000727234
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name small.c -mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -target-linker-version 2.24 -momit-leaf-frame-pointer -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -resource-dir /usr/local/clang-trunk/bin/../lib/clang/3.9.0 -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 -O1 -fdebug-compilation-dir /data2/c-hunter-results/C/instrument-bugs/REDUCED/20160114-clang-trunk-m64-g-O3-build-051234/delta -ferror-limit 19 -fmessage-length 238 -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/small-ee55a9.o -x c small.c
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 3.9.0 (trunk 257643)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang: 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: note: diagnostic msg:
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/small-e5dff4.c
clang: note: diagnostic msg: /tmp/small-e5dff4.sh
clang: note: diagnostic msg:
$:
$: cat small.c
struct S0 {
int f0;
short f5;
} b;
static int a;
void fn1(char p1) {
struct S0 c = {3};
if (a)
b = c;
c.f0 = p1;
}
int main() { return 0; }
$:
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