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   comp.compilers      Compiler construction, theory, etc. (Mod      2,753 messages   

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   Message 2,017 of 2,753   
   Ike Naar to gneuner2@comcast.net   
   Re: GCC/G++ compiler: Error goes away wh   
   29 Mar 11 21:42:12   
   
   From: ike@localhost.claranet.nl   
      
   George Neuner   wrote:   
   >GCC's -O3 optimization level is widely known to cause strange problems   
   >... almost always because the program is violating assumptions made by   
   >the more advanced optimizations.   
   >   
   >The -O2 level typically is safe.  If you think you need the -O3   
   >optimizations, you should individually enable them to see if any   
   >breaks the program.  Specify -O3 only if you find they all work.   
      
   Sometimes using -O3 makes the program run slower than when using -O2.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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