[LLVMbugs] [Bug 978] NEW: X86/ELF Dwarf Support Is Lacking

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=978

           Summary: X86/ELF Dwarf Support Is Lacking
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rspencer at x10sys.com


The X86/ELF Dwarf support appears to be lacking some information that the
debugger needs. Although it is possible to set breakpoints, trace through the
program, and otherwise debug things, GDB will quite frequently print messages of
the form: 
During symbol reading, Incomplete CFI data; unspecified register eax at 0x08867e2d.
During symbol reading, Incomplete CFI data; unspecified register ecx at 0x08867e2d.
During symbol reading, Incomplete CFI data; unspecified register edx at 0x08867e2d.
During symbol reading, Incomplete CFI data; unspecified register ebx at 0x08867e2d.
During symbol reading, Incomplete CFI data; unspecified register esi at 0x08867e2d.
During symbol reading, Incomplete CFI data; unspecified register edi at 0x08867e2d.

These always occur with the "where" command and often occur when inspecting
variables or using the "next" command.

Possibly there is some frame information that is missing for X86/ELF.



------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.