[Bug 56867] New: dynamic_cast too slow on wine compared to windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56867

Bug ID: 56867
           Summary: dynamic_cast too slow on wine compared to windows
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcp
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Herb Sutter said dynamic cast was using string comparison and now it is not. So
the performance of dynamic cast becomes MUCH faster.

Same program with static link with microsoft's own library.

$ wine ./cout.exe 
coutfd:0.1162809s
u=10000000

wine DLL implementation:

$ wine ./cout.exe 
coutfd:0.4995548s
u=10000000

The overhead is 5x at least