Hi Eric, Thanks for this addition.
> +struct __time_t_must_be_integral { > + unsigned int __floating_time_t_unsupported : 2 * ((time_t) 1 / 2 == 0) - 1; > +}; I agree with the expression (personally I would have used (time_t) 0.5 == 0 but that's probably equivalent). But why use __ as prefix? Symbols starting with __ are, generally speaking, in the territory of the implementation (libc + compiler), which is why gnulib tries to use only symbols that start with a single _. > Hmm, given Bruno's recent point that C89 didn't require ?: support > in constant expressions, should we re-visit verify.h to use > (2 * cond - 1) instead of (cond ? 1 : -1)? Currently it seems that all compilers support both. Therefore there is no reason to change (cond ? 1 : -1) to (2 * cond - 1), but there is also no reason to change it in the opposite direction. Bruno