[LLVMbugs] [Bug 3086] New: Segmentation fault in alias analysis

Mon Nov 17 17:32:03 PST 2008

http://llvm.org/bugs/show_bug.cgi?id=3086

           Summary: Segmentation fault in alias analysis
           Product: libraries
           Version: 2.4
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Loop Optimizer
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sliedes at cc.hut.fi
                CC: llvmbugs at cs.uiuc.edu

The attached bitcode when run with "opt -licm -loop-reduce" segfaults on amd64.

------------------------------------------------------------
$ opt bugpoint-reduced-simplified.bc -licm -loop-reduce
opt[0x7603af]
/lib/libc.so.6[0x7fe7bd569f60]
opt[0x62a09c]
opt(_ZNK4llvm8AliasSet14aliasesPointerEPKNS_5ValueEjRNS_13AliasAnalysisE+0x50)[0x623810]
opt(_ZN4llvm15AliasSetTracker22findAliasSetForPointerEPKNS_5ValueEj+0x92)[0x624402]
opt(_ZN4llvm15AliasSetTracker21getAliasSetForPointerEPNS_5ValueEjPb+0x240)[0x624fe0]
opt(_ZN4llvm15AliasSetTracker3addEPNS_8LoadInstE+0x8b)[0x6254db]
opt(_ZN4llvm15AliasSetTracker3addEPNS_11InstructionE+0x8d)[0x6255dd]
opt(_ZN4llvm15AliasSetTracker3addERNS_10BasicBlockE+0x32)[0x6256f2]
opt[0x552d55]
opt(_ZN4llvm13LPPassManager13runOnFunctionERNS_8FunctionE+0x3ab)[0x6405cb]
opt(_ZN4llvm13FPPassManager13runOnFunctionERNS_8FunctionE+0x15b)[0x6ff8ab]
opt(_ZN4llvm13FPPassManager11runOnModuleERNS_6ModuleE+0xa6)[0x6ffb86]
opt(_ZN4llvm13MPPassManager11runOnModuleERNS_6ModuleE+0xd0)[0x6ff3d0]
opt(_ZN4llvm15PassManagerImpl3runERNS_6ModuleE+0x86)[0x6ff686]
opt(main+0xa5f)[0x49035f]
/lib/libc.so.6(__libc_start_main+0xe6)[0x7fe7bd5561a6]
opt(sinh+0x39)[0x485379]
Segmentation fault
------------------------------------------------------------

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