[Bug 57308] New: Cannot load split debug symbols under /usr/lib/debug

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57308

Bug ID: 57308
           Summary: Cannot load split debug symbols under /usr/lib/debug
           Product: Wine
           Version: 9.19
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dbghelp
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

We're discussing splitting PE debug symbols into a separate Arch Linux package
to reduce disk usage for users that don't need it:
https://gitlab.archlinux.org/archlinux/packaging/packages/wine/-/issues/16.
Typically, split debug symbol files are placed under /usr/lib/debug.
Apparently, wine tries to find them but something wrong happens. If I run
strace on the UNIX process for winedbg.exe, I got this when a crash happens in
msvcrt.dll:

16423 newfstatat(AT_FDCWD,
"/usr/lib/debug/\??\Z:\usr\lib\wine\x86_64-windows\msvcrt.dll.debug",
0x7ffffe0ff8e0, 0) = -1 ENOENT

The path should be /usr/lib/debug/usr/lib/wine/x86_64-windows/msvcrt.dll.debug.
It seems Windows paths are not correctly converted to UNIX paths.