[Bug 54690] New: ldp.exe crashes when attempting to connect to an invalid host

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54690

Bug ID: 54690
           Summary: ldp.exe crashes when attempting to connect to an
                    invalid host
           Product: Wine
           Version: 8.3
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wldap32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74201
  --> https://bugs.winehq.org/attachment.cgi?id=74201
WINEDEBUG=+wldap32

ldp.exe is Microsoft's GUI LDAP client, which was part of the Windows XP
Service Pack 2 Support Tools and is still available on Windows 10 by installing
the Windows feature "Active Directory Lightweight Directory Services".

Steps to reproduce:

1. Create a 32-bit Wine bottle and set the Windows version to XP.

2. Run `winetricks mfc42`.

3. Run `wine WindowsXP-KB838079-SupportTools-ENU.exe`.

4. Run `wine 'C:\Program Files\Support Tools\ldp.exe'`.

5. Click Connection > Connect, leave "Server" blank, and click OK.

At this point, ldp.exe crashes. However, the program does not crash if a valid
LDAP server is entered.

$ sha256sum WindowsXP-KB838079-SupportTools-ENU.exe
7927e87af616d2fb8d4ead0db0103eb845a4e6651b20a5bffea9eebc3035c24d