[Bug 31145] WinDirStat right clicking on a directory and selecting properties says "invalid parameter"

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=31145

--- Comment #16 from Damjan Jovanovic <damjan.jov at gmail.com> ---
A +shell trace isn't very revealing, but we can use the fact that the
MessageBox is modal, making the stack trace to it visible. "bt all" in winedbg
gives us:

---snip---
  9 0x6ed6c3cf MessageBoxW+0x5e(text=<couldn't compute location>,
title=<couldn't compute location>, type=<couldn't compute location>)
[Z:\Wine\wine\dlls\user32\msgbox.c:441] in user32 (0x0021d118)
  10 0x6354314a in shell32 (+0x83149) (0x0021e158)
  11 0x63544343 in shell32 (+0x84342) (0x0021f938)
  12 0x6354468b in shell32 (+0x8468a) (0x0021f958)
  13 0x00406a4e EntryPoint+0xffffffff() in windirstat (0x0021f9dc)
---snip---

So the MessageBox is called from somewhere in shell32. A grep through there,
and eliminates the places that place a hardcoded string as the message, leaves
us with few candidates. Hacking the remaining places to log a FIXME before each
MessageBox, we find it's called from:

do_error_dialog()
which is called in the "out:" part of SHELL_execute()

It looks like some kind of bug in SHELL_execute(), in handling the variation of
parameters passed by WinDirStat.

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