🚀 go-pugleaf

dcl-cs!stephen writes:
>C++ is supposed to be upwards compatible with C.  Can anybody, therefore,
>explain why the following does not compile (under 4.2):
[irrelevant portions deleted --karl]
># include <grp.h>
>int    fd = -1, wizard, group, ngroups = NGROUPS, goodguy, glist [NGROUPS];

Because <grp.h> declares "struct group", and line 25 declares "int group".
In C++, class names share the same namespace as variables -- there is, in
effect, an automatic declaration "typedef struct group group".  I think there
might be a compatibility flag to allow the collision.

In future, you might try isolating the problem by deleting chunks of code
until you have a minimal-case program that demonstrates the alleged bug.  It
makes it easier to convince the Powers That Be if it is a compiler bug, or
to find it yourself if it isn't.

Karl W. Z. Heuer (ihnp4!ima!haddock!karl), The Walking Lint