[LLVMbugs] [Bug 7424] New: llc crash on bad use of llvm.eh.selector

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=7424

           Summary: llc crash on bad use of llvm.eh.selector
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Found this while using bugpoint to debug a larger program.

$ cat test.ll
declare i32 @llvm.eh.selector(i8*, i8*, ...) nounwind

define void @_ZNK4llvm9UnsetInit11getAsStringEv_invoke.cont() {
newFuncRoot:
  %0 = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* undef, i8* bitcast (i32
(...)* null to i8*), i8* null)
  unreachable
}




$ ~/llvm/build/Debug/bin/llc test.ll
llc:
/home/espindola/llvm/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp:163:
void llvm::FunctionLoweringInfo::clear(): Assertion `CatchInfoFound.size() ==
CatchInfoLost.size() && "Not all catch info was assigned to a landing pad!"'
failed.
0  llc             0x0000000001397b75
1  llc             0x0000000001397a38
2  libpthread.so.0 0x000000354820f440
3  libc.so.6       0x0000003547a329a5 gsignal + 53
4  libc.so.6       0x0000003547a34185 abort + 373
5  libc.so.6       0x0000003547a2b925 __assert_fail + 245
6  llc             0x0000000000dfb7c1
7  llc             0x0000000000e97e1a
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 2410
8  llc             0x0000000000fcf1c1
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 95
9  llc             0x000000000130a9a5
llvm::FPPassManager::runOnFunction(llvm::Function&) + 405
10 llc             0x000000000130abc2
llvm::FPPassManager::runOnModule(llvm::Module&) + 102
11 llc             0x000000000130aef2
llvm::MPPassManager::runOnModule(llvm::Module&) + 456
12 llc             0x000000000130b441 llvm::PassManagerImpl::run(llvm::Module&)
+ 125
13 llc             0x000000000130b803 llvm::PassManager::run(llvm::Module&) +
39
14 llc             0x0000000000a411fd main + 2463
15 libc.so.6       0x0000003547a1ec5d __libc_start_main + 253
16 llc             0x0000000000a3ff09
Stack dump:
0.    Program arguments: /home/espindola/llvm/build/Debug/bin/llc test.ll 
1.    Running pass 'Function Pass Manager' on module 'test.ll'.
2.    Running pass 'X86 DAG->DAG Instruction Selection' on function
'@_ZNK4llvm9UnsetInit11getAsStringEv_invoke.cont'
Aborted (core dumped)

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