Hello to all,

When trying to build a program I noticed the following problem:

When using a yacc input file which contains the line

#define YYDEBUG

and letting yacc eat it, cc will subsequently barf on the empty #if lines
it sees after preprocessing.

It seems that yacc inserts

#if YYDEBUG

lines in its output.

Defining YYDEBUG to any non-empty value does work.

Possible solution: change the '#if YYDEBUG' to '#ifdef YYDEBUG' in yacc/output.c
Please consider.

-Alain