[LLVMbugs] [Bug 12733] New: LLVM creates DWARF that GDB doesn't grok: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12733

             Bug #: 12733
           Summary: LLVM creates DWARF that GDB doesn't grok: DWARF-2
                    expression error: DW_OP_reg operations must be used
                    either alone or in conjuction with DW_OP_piece or
                    DW_OP_bit_piece.
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: joerg at NetBSD.org
                CC: echristo at gmail.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


- test case from #12568
- release+assert build of clang r155757
- set break point on X86MCCodeEmitter.cpp:987, run + up

GDB is Ubuntu's 7.3 version

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