[lldb-dev] [Bug 46613] New: LLDB does not load debug symbols on Windows 10

via lldb-dev lldb-dev at lists.llvm.org
Mon Jul 6 16:10:26 PDT 2020


            Bug ID: 46613
           Summary: LLDB does not load debug symbols on Windows 10
           Product: lldb
           Version: 10.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: joe at jrm.dev
                CC: jdevlieghere at apple.com, llvm-bugs at lists.llvm.org

Trying to explore a full LLVM toolchain for my C/C++ development on Windows,
and found that LLDB cannot load debug symbols on Windows 10. LLDB is producing
.PDB and .ILK files for the executable I want to debug, but when LLDB loads the
executable, no debug symbols are loaded.

Issues I experienced that lead me to realize the symbols weren't being loaded:
 - Could not set breakpoints (LLDB reported "Unable to resolve breakpoint to
any actual location").
 - Could not see source listing (LLDB command 'source list' did not output

Attempted fixes:
 - I tried rolling back to LLVM 6.0, to see if the issue was isolated to LLVM
10.0. Found that the issue persisted. I got curious and installed LLVM 10 and
LLVM 6 on my WSL terminal and found that both the 10.0 LLDB and the 6.0 LLDB
worked as expected, so I can only assume the issue is isolated to Windows.
 - Tried passing -gdwarf and -glldb to the Windows version of clang, but LLDB
was still not able to load debug symbols.

There is a duplicate of this bug (#42160) dating little more than year old
(posted 2019-06-06) that has reported this issue but didn't receive any

 - Is there anyone available to work on this? If not, I would gladly help out.
 - Is there any way to get verbose logging from LLDB? That would greatly help
me troubleshoot the source of the issue.

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