Question about---error: stray ‘@’ in program

[Ian Lance Taylor]

David Bausum <davidbausum@gmail.com> writes:

> enum {Tag0 = 0,
>       A,
>       A1@B,
>       C,
>       Tag1};

C does not permit identifiers to contain an '@' character.  I'm not
aware of any version of gcc which permitted that.  I guess there could
have been one in the past.

Ian