[LLVMbugs] [Bug 7960] New: x86-64 backend generating incorrect fixups for COFF

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Aug 21 17:56:49 PDT 2010


           Summary: x86-64 backend generating incorrect fixups for COFF
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: bigcheesegs at gmail.com
                CC: llvmbugs at cs.uiuc.edu

The attached program (clanged, bugpointed and hand reduced from lua/lapi.c)
fails when compiled with:

G:\Users\Michael\temp\lua-5.1.4\src>llc -filetype=obj
Assertion failed: Target.getSymB() == NULL && "Relocation must reference only
one symbol!", file ..\..\..\..\llvm\lib\MC\WinCOFFObjectWriter.cpp, line 569

The problem seems to be that the x86-64 backend is generating incorrect fixups
for this case.

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