[lldb-dev] [Bug 25087] New: Stripped symbol handling when using dwo sdebug info

via lldb-dev lldb-dev at lists.llvm.org
Wed Oct 7 03:00:06 PDT 2015


            Bug ID: 25087
           Summary: Stripped symbol handling when using dwo sdebug info
           Product: lldb
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: tberghammer at google.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

If we use dsym/dwarf as a debug info and a symbol is removed from the object
file during linking (because it is unused) then LLDB correctly reports an error
when the user want to set a breakpoint on it.

In case of dwo debug info the symbol will be still available in the *.dwo file
as it isn't modified by the linker when it removed the unused function. Because
of it LLDB will set a breakpoint at address 0x0 (the address stored at the
location where the symbol address should be stored in the executable) instead
of reporting an error.

For a test case see: DeadStripTestCase.test

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