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Re: RFC: adding knowledge of the int_fastN_t types to the compiler
it's just targets that might have them but haven't
had the relevant information recorded in GCC that I think should
not have
the types defined by default in GCC. (How this relates to Fortran
is up
to the Fortran maintainers.)
Fortran requires that a negative value be returned if the
"int_fastN_t type isn't defined in the companion C compiler" (quoting
from memory). Thus, of the three cases:
1. on targets that do have int_fastN_t types defined, we register
the information in the compiler (for Fortran, but maybe other uses)
but don't override stdint.h
2. on targets that don't have int_fastN_t types, we provide a
stdint.h and give the corresponding values in Fortran
3. on targets that have int_fastN_t types but the compiler wasn't
updated to know, we either provide our own defaults in Fortran and
hope they match; a carefully crafted testcase in the testsuite might
help checking that and adding information about these targets when we
see the testcase FAILing.
FX
--
François-Xavier Coudert
http://www.homepages.ucl.ac.uk/~uccafco/