[Bug fortran/47605] Document that C_Bool might be the wrong constant for C Booleans

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47605

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > For logical types, please note that the Fortran standard only guarantees
> > interoperability between C99's _Bool and Fortran's C_Bool-kind logicals and C99
> > defines that true has the value 1 and false the value 0. Using any other integer
> > value with GNU Fortran's LOGICAL (with any kind parameter) gives an undefined
> > result. (Passing other integer values than 0 and 1 to GCC's _Bool is also
> > undefined, unless the integer is explicitly or implicitly casted to _Bool.)
>
> What should be added to that?

No answer for over a year. Closing as FIXED.