[naviserver-devel] warning, shift count undefined behavior

[Andrew P. <at...@pi...>]

Hm, this warning sounds kind of scary:

  sockfile.c(351) : warning C4293: '>>' : shift count negative or too big, undefined behavior

That's in the Windows-only implementation of pread(), in nsd/sockfile.c:

  overlapped.Offset = (DWORD)offset; 
  overlapped.OffsetHigh = ((DWORD)offset >> 32); 

I don't know if it's a real problem or how to fix it.

Some related docs:
http://msdn.microsoft.com/en-us/library/cx0bb1cy.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms684342%28v=vs.85%29.aspx

-- 
Andrew Piskorski <at...@pi...>