Re: GCC/G++ compiler: Error goes away when run through debugger

On Mar 29, 2:42 pm, i...@localhost.claranet.nl (Ike Naar) wrote:
> George Neuner <gneun...@comcast.net> 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.


I think you should use some tool like valgrind which might immediately
catch the problem that would be going on.


Also when you use -ggdb I think some of the strings are loaded in
the .data section but gets loaded into the .const data section
otherwise.


-


Shankar

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