[LLVMbugs] [Bug 22652] New: crash in LiveDebugVariables inside LexicalScopes::initialize

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22652

            Bug ID: 22652
           Summary: crash in LiveDebugVariables inside
                    LexicalScopes::initialize
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dcallahan at fb.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13922
  --> http://llvm.org/bugs/attachment.cgi?id=13922&action=edit
input bitcode file associated with bug

"clang" crashes with this command line on the attach test.c

... build/Debug+Asserts/bin/clang -O2 -S -o test.s -x ir test.bc

and produces this stack trace: 

clang: /home/dcallahan/llvm-trunk/llvm/lib/CodeGen/LexicalScopes.cpp:170:
llvm::LexicalScope* llvm::LexicalS\
copes::getOrCreateRegularScope(llvm::MDNode*): Assertion
`DISubprogram(Scope).describes(MF->getFunction())' \
failed.
0  clang           0x000000000437f53c llvm::sys::PrintStackTrace(_IO_FILE*) +
38
1  clang           0x000000000437f7d7
2  clang           0x000000000437e498
3  libpthread.so.0 0x00007f696213d710
4  libc.so.6       0x00007f6961526625 gsignal + 53
5  libc.so.6       0x00007f6961527e05 abort + 373
6  libc.so.6       0x00007f696151f74e
7  libc.so.6       0x00007f696151f810 __assert_perror_fail + 0
8  clang           0x0000000003a1b1f0
llvm::LexicalScopes::getOrCreateRegularScope(llvm::MDNode*) + 746
9  clang           0x0000000003a1af04
llvm::LexicalScopes::getOrCreateLexicalScope(llvm::DebugLoc) + 176
10 clang           0x0000000003a1b089
llvm::LexicalScopes::getOrCreateRegularScope(llvm::MDNode*) + 387
11 clang           0x0000000003a1af04
llvm::LexicalScopes::getOrCreateLexicalScope(llvm::DebugLoc) + 176
12 clang           0x0000000003a1b3b0
llvm::LexicalScopes::getOrCreateInlinedScope(llvm::MDNode*, llvm::MDNo\
de*) + 268
13 clang           0x0000000003a1aeef
llvm::LexicalScopes::getOrCreateLexicalScope(llvm::DebugLoc) + 155
14 clang           0x0000000003a1b3b0
llvm::LexicalScopes::getOrCreateInlinedScope(llvm::MDNode*, llvm::MDNo\
de*) + 268
15 clang           0x0000000003a1aeef
llvm::LexicalScopes::getOrCreateLexicalScope(llvm::DebugLoc) + 155
16 clang           0x0000000003a1aa60
llvm::LexicalScopes::extractLexicalScopes(llvm::SmallVectorImpl<std::p\
air<llvm::MachineInstr const*, llvm::MachineInstr const*> >&,
llvm::DenseMap<llvm::MachineInstr const*, llvm\
::LexicalScope*, llvm::DenseMapInfo<llvm::MachineInstr const*>,
llvm::detail::DenseMapPair<llvm::MachineInst\
r const*, llvm::LexicalScope*> >&) + 452
17 clang           0x0000000003a1a834
llvm::LexicalScopes::initialize(llvm::MachineFunction const&) + 112
18 clang           0x0000000003bf4388
19 clang           0x0000000003bf4631
llvm::LiveDebugVariables::runOnMachineFunction(llvm::MachineFunction&)\
 + 185
20 clang           0x0000000003a80419
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 95
21 clang           0x00000000042cf850
llvm::FPPassManager::runOnFunction(llvm::Function&) + 290
22 clang           0x00000000042cf9c0
llvm::FPPassManager::runOnModule(llvm::Module&) + 84
23 clang           0x00000000042cfd14
24 clang           0x00000000042d03c2
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 244
25 clang           0x00000000042d05e1
llvm::legacy::PassManager::run(llvm::Module&) + 39
26 clang           0x00000000015fdf21
27 clang           0x00000000015fdff3
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOpti\
ons const&, clang::TargetOptions const&, clang::LangOptions const&,
llvm::StringRef, llvm::Module*, clang::B\
ackendAction, llvm::raw_ostream*) + 127
28 clang           0x00000000015e1c0e clang::CodeGenAction::ExecuteAction() +
1318
29 clang           0x00000000012f47ff clang::FrontendAction::Execute() + 139
30 clang           0x00000000012ba1be
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 770
31 clang           0x000000000127c264
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1102
32 clang           0x0000000001268439 cc1_main(llvm::ArrayRef<char const*>,
char const*, void*) + 689
33 clang           0x0000000001275b1e
34 clang           0x00000000012760d6 main + 1027
35 libc.so.6       0x00007f6961512d5d __libc_start_main + 253
36 clang           0x0000000001266c19
Stack dump:

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