[Bug 47079] New: CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, <pid>) fails with error 998 (ERROR_NOACCESS)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47079

            Bug ID: 47079
           Summary: CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, <pid>)
                    fails with error 998 (ERROR_NOACCESS)
           Product: Wine
           Version: 4.6
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel32
          Assignee: wine-bugs at winehq.org
          Reporter: davidebeatrici at gmail.com
      Distribution: ---

Hello,

I was testing, on a 64 bit prefix, an application which makes use of
CreateToolhelp32Snapshot() with the TH32CS_SNAPMODULE flag to retrieve a
snapshot of the modules loaded by a specific process (its ID is the second and
last argument to the function).

The application was not working as expected and after debugging it I found out
that CreateToolhelp32Snapshot() returns INVALID_HANDLE_VALUE and GetLastError()
returns 998, which corresponds to ERROR_NOACCESS.

After seeing that CreateToolhelp32Snapshot() succeeds with one of the "native"
Wine processes (e.g. explorer.exe), I discovered that the issue only happens
when the application calling CreateToolhelp32Snapshot() has a different
architecture compared to the target process (32 bit vs 64 bit or vice versa).

Best regards,
Davide

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