4 # Verify which OP= operators warn if their targets are undefined.
5 # Based on redef.t, contributed by Graham Barr <Graham.Barr@tiuk.ti.com>
6 # -- Robin Barker <rmb@cise.npl.co.uk>
18 $SIG{q(__WARN__)} = sub { print $warn; $warn .= join("",@_) };
20 sub ok { print $_[1] ? "ok " : "not ok ", $_[0], "\n"; }
22 sub uninitialized { $warn =~ s/Use of uninitialized value[^\n]+\n//s; }
26 { my $x; $x ++; ok 1, ! uninitialized; }
27 { my $x; $x --; ok 2, ! uninitialized; }
28 { my $x; ++ $x; ok 3, ! uninitialized; }
29 { my $x; -- $x; ok 4, ! uninitialized; }
31 { my $x; $x **= 1; ok 5, uninitialized; }
33 { my $x; $x += 1; ok 6, ! uninitialized; }
34 { my $x; $x -= 1; ok 7, ! uninitialized; }
36 { my $x; $x .= 1; ok 8, ! uninitialized; }
38 { my $x; $x *= 1; ok 9, uninitialized; }
39 { my $x; $x /= 1; ok 10, uninitialized; }
40 { my $x; $x %= 1; ok 11, uninitialized; }
42 { my $x; $x x= 1; ok 12, uninitialized; }
44 { my $x; $x &= 1; ok 13, uninitialized; }
45 { my $x; $x |= 1; ok 14, ! uninitialized; }
46 { my $x; $x ^= 1; ok 15, ! uninitialized; }
48 { my $x; $x &&= 1; ok 16, ! uninitialized; }
49 { my $x; $x ||= 1; ok 17, ! uninitialized; }
51 { my $x; $x <<= 1; ok 18, uninitialized; }
52 { my $x; $x >>= 1; ok 19, uninitialized; }
54 { my $x; $x &= "x"; ok 20, uninitialized; }
55 { my $x; $x |= "x"; ok 21, ! uninitialized; }
56 { my $x; $x ^= "x"; ok 22, ! uninitialized; }
60 # If we got any errors that we were not expecting, then print them
61 print map "#$_\n", split /\n/, $warn if length $warn;