On Wed, Feb 13, 2008 at 03:20:56PM +0100, Andreas Schweigstill wrote:
> + /* Validate arguments */
> + if ((argc != 5) || (strlen(argv[3]) != 1)) {
> + printf("Usage:\n%s\n", cmdtp->usage);
> + return 1;
> + }
>
> May we rely on the compiler optimizing the above expression so
> strlen() != 1 will only be evaluated if argc == 5 ?
Short-circuit evaluation isn't optimization, it's the semantics of the C
language.
-Scott
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