obstack_fgrow1 (&guard_obstack, "\ncase %d:\n", nrules);
if (!no_lines_flag)
obstack_fgrow2 (&guard_obstack, "#line %d %s\n",
- lineno, quotearg_style (c_quoting_style, infile));
+ lineno, quotearg_style (c_quoting_style,
+ macro_find ("filename")));
obstack_1grow (&guard_obstack, '{');
count = 0;