C++ preprocessor bug or not ?

[Nathan Sidwell]

Neil Booth wrote:

> As Dave and Philipp pointed out, CPP is correct.  However, the diagnostic
> is awful.
Thanks to all who corrected me - what a surprising behaviour!

> /tmp/test.c:1:14: operator "defined" requires an identifier
> /tmp/test.c:1:14: ("xor" is an alternative token for "^" in C++)
Excellent!

nathan

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