[Bug preprocessor/9449] UCNs not recognized in identifiers (c++/c99)

[geoffk at gcc dot gnu dot org]

------- Additional Comments From geoffk at gcc dot gnu dot org  2005-09-15 22:34 -------
(In reply to comment #39)
> Another reason why spelling needs preserving (in addition to implementing #
> correctly) is for the constraints on duplicate macro definitions.
> 
> #define foo \u00c1
> #define foo \u00C1
> 
> is invalid (different spelling in replacement), as is

We discussed this on the list and decided that this was probably a defect in the C standard, since the 
Rationale says that the kind of implementation we have now is supposed to be permitted, and jsm said 
he'd file a DR.  How's that going?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9449