Follow-up Comment #3, bug #64628 (project groff):
Or better, change
strcmp(s, last_filename) == 0
to
strcmp(s, last_filename) != 0
void troff_output::set_location(const char *s, int n)
{
assert(s != 0 /* nullptr */);
if ((s != 0 /* nullptr */) && (last_filename != 0 /* nullptr */)
&& strcmp(s, last_filename) == 0) {
printf(".lf %d %s\n", n, s);
char *lfn = strdup(s);
if (0 /* nullptr */ == lfn)
fatal("memory allocation failure while copying file name");
last_filename = lfn;
}
else
printf(".lf %d\n", n);
}
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