Re: proposed patch for Bison core dumps when using lalr1.cc

[Paul Eggert]

> From: Akim Demaille <address@hidden>
> Date: Sat, 01 Feb 2003 17:11:24 +0100

> This patch is wrong: the header is not optional.  M4 should die if the
> value is not defined.  I'll do that when I have time.

OK, thanks.  I should warn you that I installed the patch in 1.875a,
but I guess the only downside my jumping the gun should be the
substitution of one wrong behavior (whatever it is) for another (a
core dump).

However, I'm puzzled: why is the header required for C++?
Isn't C++ just the same as C with respect to whether a header is needed?
Are you saying that a C++ user must invoke Bison with the -d option?