[LLVMbugs] [Bug 16214] New: Clang does not emit debug info (definition) for structures

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Jun 3 14:33:06 PDT 2013


            Bug ID: 16214
           Summary: Clang does not emit debug info (definition) for
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: daniel.malea at intel.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10623
  --> http://llvm.org/bugs/attachment.cgi?id=10623&action=edit
c++ code to reproduce the missing DWARF structure definition

Ran across this bug in an LLDB test case
(lldb/test/functionalities/data-formatter/rdar-9973865/main.cpp, attached) that
contains a simple structure definition.

To reproduce:
$ clang -g main.cpp && dwarfdump a.out

Expected result:
Dump contains a definition of the structure "Summarize". See attached
dwarf.good.txt file. This was the behaviour in clang in svn r180916.

Actual result:
Dump contains a declaration of "Summarize" but no definition. This prevents
debuggers from examining the members of the structure. See attached
dwarf.bad.txt file. This is the behaviour in clang rTODO, but was present

Workaround: adding -fno-limit-debug-info fixes the problem.

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