[lldb-dev] [Bug 28017] New: error: failed to load objectfile for static-linking archives?

[via lldb-dev]

https://llvm.org/bugs/show_bug.cgi?id=28017

            Bug ID: 28017
           Summary: error: failed to load objectfile for static-linking
                    archives?
           Product: lldb
           Version: 3.6
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: chris+llvm at qwirx.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

I'm having trouble debugging my application with LLDB on Mac because it seems
to fail to find some of the compiled object files, which are inside a static
link library (.a file). Objects which are compiled directly into the binary
seem to be OK.

I get errors like this when I first try to access line-level information:

(lldb) l BackupStoreFile.cpp
error: backupstore.a(BackupStoreFile.o) failed to load objfile for
/Users/chris/projects/2004/boxi/bb-git/bin/bbackupquery/../../debug/lib/backupstore/backupstore.a
error: backupstore.a(BackupCommands.o) failed to load objfile for
/Users/chris/projects/2004/boxi/bb-git/bin/bbackupquery/../../debug/lib/backupstore/backupstore.a
...
error: common.a(autogen_CommonException.o) failed to load objfile for
/Users/chris/projects/2004/boxi/bb-git/bin/bbackupquery/../../debug/lib/common/common.a
error: Could not find source file "BackupStoreFile.cpp".

I suspect that either lldb does not fully understand the .a archive format, or
another bug prevents it from locating the correct object file inside the
archive. It is definitely there:

chris at Chriss-MacBook-Pro(backupstorepatch)$ ar t
/Users/chris/projects/2004/boxi/bb-git/bin/bbackupquery/../../debug/lib/backupstore/backupstore.a
__.SYMDEF
BackupAccountControl.o
...
BackupStoreDirectory.o
BackupStoreFile.o
BackupStoreFileCmbDiff.o
...

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