FX Coudert <[EMAIL PROTECTED]> writes: > Hi all, > > For Fortran 2003 standard conformance, the Fortran front-end has to > know at compile-time what integer mode corresponds to some C99 types, > like intmax_t, intN_t, int_leastN_t, int_fastN_t. > > For intN_t and int_leastN_t, I can see how to get them by looking at > the width of the different integer modes. For intmax_t, it is defined > in c-common.h as: > > #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ > ? "int" \ > : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \ > ? "long int" \ > : "long long int")) > > But I cannot see how the front-end can know the integer mode for > int_leastN_t. We're likely to include this functionality for the 4.3 > release, so I'll be happy to get a large number of suggestions around > on how to implement that.
It's a property of the ABI on the target. The only way to know is to have someone (or something) tell you. Even the macro above can be redefined by a target. One nice thing would be that if we actually had GCC know about all the contents of stdint.h, then maybe GCC could provide it; we have a policy that GCC provides all the headers of a freestanding implementation, and this is the only one missing.
