Re: [newlib] print formats for FAST and LEAST types

[Corinna Vinschen <vinschen at redhat dot com>]

On Jul 14 15:08, Andre Vieira wrote:
> On 14/07/15 14:49, Corinna Vinschen wrote:
> >On Jul 14 12:17, Andre Vieira wrote:
> >>Hello,
> >>
> >>Kevin Bracey commented on Launchpad that he was having issues with a
> >>mismatch between <inttypes.h> and <stdint.h> when printing an int_fast32_t.
> >>See https://answers.launchpad.net/gcc-arm-embedded/+question/269083
> >>
> >>This is due to the fact that on targets where the size of âintâ and âlongâ
> >>are equal and 32 bits, the current header files will configure the type of
> >>int_fast32_t to be âintâ and PRIdFAST32 to be âldâ and make printf thus
> >>expect a âlongâ. The macroâs used in <stdint.h> come from
> >>âgcc/config/newlib-stdint.hâ.
> >
> >Are you looking into an older version of newlib by any chance?  We
> >added code to newlib's headers to check explicitely at runtime whether
> >__INT32_TYPE__ is int or long, and set the PRIxxx32 macros accordingly.
> >
> >See https://sourceware.org/git/?p=newlib-cygwin.git;h=496380c
> >
> >I just checked this on 32 bit Cygwin:
> >
> >   $ gcc -E - <<EOF
> >   #include <inttypes.h>
> >   #include <stdint.h>
> >   __INT_FAST32_TYPE__
> >   PRIdFAST32
> >   EOF
> >   [...]
> >   int
> >   "d"
> >
> >If there's still anything wrong with that, feel free to send patches.
> >
> >
> >Corinna
> >
> 
> Hi Corinna,
> 
> I am on a newer version than the linked patch.
> 
> However when I run your example I get int and "ld".
> In your example, if you pass -dM, does it show INT32_EQ_LONG to be defined?

No, it's undefined.  This is i686-pc-cygwin.  Please have a look at
libc/include/sys/_intsup.h  and try to find out why this doesn't work
for your target.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat

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