🚀 go-pugleaf

Mike Coffman <coffman@cat.com> writes:

>Mike Haertel wrote in comp.lang.c.moderated:

>> #define ASSERT_COMPILE_TIME(EXPR, KEY)                                  \
>>         struct ASSERT_COMPILE_TIME_##KEY {                              \
>>                 char ASSERT_COMPILE_TIME_##KEY[2*((EXPR) != 0) - 1];    \
>>         }

>I usually use the sequence:
> 
>#if test_condition
>#error error message
>#endif 
>
>but, as you can see, this takes three lines to invoke to your one.

And, additionally, Mike H.'s macro accepts expressions involving
sizeof, which #if knows nothing about.

-- 

Henning Makholm - math and CS student - University of Copenhagen
makholm@diku.dk - http://www.diku.dk/students/makholm - fido 2:235/224.92