f=fopen(st->logfile,"a");
if (!f) fatal_perror("logfile (%s:%d): cannot open \"%s\"",
st->loc.file,st->loc.line,st->logfile);
f=fopen(st->logfile,"a");
if (!f) fatal_perror("logfile (%s:%d): cannot open \"%s\"",
st->loc.file,st->loc.line,st->logfile);