On Wed, May 23, 2007 at 03:07:30AM +0200, Dr. Stephen Henson wrote:
> Would the compiler (or possibly other compilers) give out a warning that a
> test was always true?
Unlikely, that would set off code like:
#define DEBUG 1
[...]
if(DEBUG)
printf("some debug info");
Which isn't perhaps the best style but a lot of code does get written
like this under the assumption the compiler will detect the trueness
or non-trueness of the expression at compile time and not emit any
code for it. (It also has the advantage that your debug-specific code
will be typechecked, etc, in every build regardless of the value of
DEBUG, unlike the code in an '#if DEBUG' block).
-Jack
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