[sudo-workers] [PATCH] Interpret YYDEBUG defined to zero as if it was undefined

[Todd C. Miller]

On Thu, 26 Feb 2015 15:22:49 -0500, David Michael wrote:

> If YYDEBUG is undefined, it's defined to 0 in gram.h, but then
> testsudoers.c tries to "#ifdef" it and gets unexpected results, which
> later breaks linking.  Can this test be made consistent with gram.c and
> getdate.c which rely on undefined symbols evaluating to zero?

YYDEBUG is not defined in the gram.h shipped with sudo, though
perhaps bison puts it there.  I'll just add:

#ifndef YYDEBUG
#define YYDEBUG 0
#endif

to the top of testsudoers.c like gram.c and getdate.c, then we can
use the #if YYDEBUG as you suggest.

 - todd