On 4/1/07, Robert Dewar <[EMAIL PROTECTED]> wrote:
Zack Weinberg wrote: It's not bending the language, the standard has nothing whatever to say about -D. I see no reason not to be completely permissive wrt -D if it is going to make transition smoother.
The thing is, the standard does not read "An identifier which has previously been defined by a #define directive shall not be redefined by another #define directive except as the same type of macro and with the same replacement-list". If it did, I would agree with you. Instead, it reads "An identifier CURRENTLY DEFINED ... shall not be redefined by a #define directive" (emphasis mine). The intent is, IMO, clearly to forbid (non-redundant) redefinition no matter how the identifier acquired a macro definition in the first place - whether by another #define, or by being built-in macros, or by -D. zw
