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- package sigtrap;
-
- require Carp;
-
- sub import {
- my $pack = shift;
- my @sigs = @_;
- @sigs or @sigs = qw(QUIT ILL TRAP ABRT EMT FPE BUS SEGV SYS PIPE TERM);
- foreach $sig (@sigs) {
- $SIG{$sig} = 'sigtrap::trap';
- }
- }
-
- sub trap {
- package DB; # To get subroutine args.
- $SIG{'ABRT'} = DEFAULT;
- kill 'ABRT', $$ if $panic++;
- syswrite(STDERR, 'Caught a SIG', 12);
- syswrite(STDERR, $_[0], length($_[0]));
- syswrite(STDERR, ' at ', 4);
- ($pack,$file,$line) = caller;
- syswrite(STDERR, $file, length($file));
- syswrite(STDERR, ' line ', 6);
- syswrite(STDERR, $line, length($line));
- syswrite(STDERR, "\n", 1);
-
- # Now go for broke.
- for ($i = 1; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) {
- @a = ();
- for $arg (@args) {
- $_ = "$arg";
- s/'/\\'/g;
- s/([^\0]*)/'$1'/
- unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
- s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
- s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
- push(@a, $_);
- }
- $w = $w ? '@ = ' : '$ = ';
- $a = $h ? '(' . join(', ', @a) . ')' : '';
- $mess = "$w$s$a called from $f line $l\n";
- syswrite(STDERR, $mess, length($mess));
- }
- kill 'ABRT', $$;
- }
-
- 1;
-