[Bug 48672] New: netconnection.c:300: create_netconn_socket: Assertion 'server->addr_len' failed.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48672

Bug ID: 48672
           Summary: netconnection.c:300: create_netconn_socket: Assertion
                    'server->addr_len' failed.
           Product: Wine
           Version: 2.18
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wininet
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

While running Tencent QQ from https://im.qq.com/, I get this error after 5 to
20 minutes and then Tencent QQ crashes (and prompts me whether to send a bug
report).

The error was shown in the terminal (I ran wine in the terminal).

The error message was:
netconnection.c:300：create_netconn_socket: Assertion 'server->addr_len' failed.

I know it's generally a bad idea to remove assertions directly, but I removed
that line and recompiled Wine and replaced wininet.dll.so with the patched one,
and the application seems to work fine. Maybe the library was not used as a
critical part of the application, or the internal state was not corrupted
enough to cause any visible bugs, or it was just the application not following
the API contracts strictly but Windows allowed such invalid usage while Wine
didn't. It would be helpful if someone who has a better understanding of the
code to tell what's happening here.