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Re: [4.5 patch] allow d or D suffix for double for c/39027


On Tue, 2009-02-24 at 23:48 +0000, Joseph S. Myers wrote:
> On Tue, 24 Feb 2009, Janis Johnson wrote:
> 
> > Draft N1312 of draft Technical Report 24732 for decimal float support
> > in C specifies an optional suffix of 'd' or 'D' for type double.  This
> > patch recognizes that suffix and allows it to be used with i, I, j, or
> > J for an imaginary value in a constant of a complex double type.
> 
> You need an appropriate pedwarn-if-pedantic for this since it still isn't 
> a standard C suffix, just like the
> 
>       if ((result & CPP_N_DFLOAT) && CPP_PEDANTIC (pfile))
>         cpp_error (pfile, CPP_DL_PEDWARN,
>                    "decimal float constants are a GCC extension");
> 
> and an associated testcase that these constants are properly diagnosed 
> with -pedantic.  (This is not a review of the rest of the patch.)

Thanks for the quick response, I'll do that.

I've noticed that constant suffixes that are extensions, such as 'i',
are not rejected for -std=c99, only for -pedantic-errors; is that
expected?

Janis


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