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authorglasser@tang-eleven-seventy-nine.mit.edu <glasser@tang-eleven-seventy-nine.mit.edu>2005-04-20 19:28:14 +0000
committerDave Mitchell <davem@fdisolutions.com>2005-04-20 21:47:40 +0000
commitf2a7f2982c10dbcfc2084d281af6ad8b959d5fb9 (patch)
treea7074d1d39356ac19f8d88c5f86c5bd529a64384 /t/op/caller.t
parent4944113acaf494b4518ba93648e0a4276c34a175 (diff)
downloadperl-f2a7f2982c10dbcfc2084d281af6ad8b959d5fb9.tar.gz
[perl #35059] [PATCH] caller() skips frames (such as eval() frames) if $^P set
From: glasser@tang-eleven-seventy-nine.mit.edu (via RT) <perlbug-followup@perl.org> Message-Id: <rt-3.0.11-35059-111134.0.304511316819145@perl.org> improved version of change 21842 that copes with glob DB::sub existing but &DB::sub not existing. p4raw-id: //depot/perl@24265
Diffstat (limited to 't/op/caller.t')
-rw-r--r--t/op/caller.t31
1 files changed, 30 insertions, 1 deletions
diff --git a/t/op/caller.t b/t/op/caller.t
index 4d90aeafd3..578aaaf0d8 100644
--- a/t/op/caller.t
+++ b/t/op/caller.t
@@ -5,7 +5,7 @@ BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
- plan( tests => 27 );
+ plan( tests => 31 );
}
my @c;
@@ -87,3 +87,32 @@ sub testwarn {
BEGIN { is( ${^WARNING_BITS}, "UUUUUUUUUUUU", 'warning bits on via "use warnings::register"' ) }
testwarn("UUUUUUUUUUUU","#3");
}
+
+
+# The next two cases test for a bug where caller ignored evals if
+# the DB::sub glob existed but &DB::sub did not (for example, if
+# $^P had been set but no debugger has been loaded). The tests
+# thus assume that there is no &DB::sub: if there is one, they
+# should both pass no matter whether or not this bug has been
+# fixed.
+
+my $debugger_test = q<
+ my @stackinfo = caller(0);
+ return scalar @stackinfo;
+>;
+
+sub pb { return (caller(0))[3] }
+
+my $i = eval $debugger_test;
+is( $i, 10, "do not skip over eval (and caller returns 10 elements)" );
+
+is( eval 'pb()', 'main::pb', "actually return the right function name" );
+
+my $saved_perldb = $^P;
+$^P = 16;
+$^P = $saved_perldb;
+
+$i = eval $debugger_test;
+is( $i, 10, 'do not skip over eval even if $^P had been on at some point' );
+is( eval 'pb()', 'main::pb', 'actually return the right function name even if $^P had been on at some point' );
+