From: weisa@in.tum.de   
      
   On 21.Mar.12 00:17, Martin B. wrote:   
   > Warning Level 4 is just basically unusable. If you have   
   > even one piece of legacy code, it's sure to create lots and lots of   
   > useless false positives, where you're not even sure how to begin to   
   > resolve them.   
      
   It's true that /W4 can be a bit noisy with certain third-party   
   libraries, but in my opinion it's still very much manageable (most of   
   Boost compiles clean, as do the Windows headers).   
   Especially if you are aiming for conformance with the ISO standard, /W3   
   is not good enough, since it does not warn when using language extensions.   
      
   On the other hand /Wall is a real pain in VC. With that option not even   
   the headers of the standard library compile without complaints.   
      
   Best regards,   
    Andreas   
      
      
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