Re: [patch]: Add check for stdint header

[Tobias Burnus <burnus@net-b.de>]

On 09/04/2009 02:52 PM, Kai Tietz wrote:
> Well, I bootstrapped this with Paolo's stdint.m4 patch, and it
> workedon linux32 and linux64 (i386), and for x86_64-pc-mingw32, too.
> Just out of curiosity, who is the size in gfortran frontend for
> int_{least,fast}*_t done, as for gcc until now no stdint.h/inttypes.h
> file was used?
>   

Actually, I do not know how exactly it works ... I now checked - and
here is how it works:

In gcc/fortran/ one calls:
   TYPE_PRECISION (type)
for INT_FAST64_TYPE etc.  The defaults are set in
  gcc/default.h

For instance:
  #ifndef INT_FAST64_TYPE
  #define INT_FAST64_TYPE ((const char *) NULL)
  #endif

And the INT_*_TYPE definitions can seemingly found in
config/*/*stdint.h. For instance:
./i386/cygwin-stdint.h:#define INT_FAST64_TYPE "long long int"
./i386/mingw-stdint.h:#define INT_FAST64_TYPE "long long int"
./glibc-stdint.h:#define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long
int" : "long long int")

Thus, stdint.h is not directly involved and the patch should have no
(adverse) effect on gfortran's c_int_fast*_t support.

Tobias