web commit by adb

diff --git a/doc/bugs/taint_issue_with_regular_expressions.mdwn b/doc/bugs/taint_issue_with_regular_expressions.mdwn
index e05a59879d7b32a508ecb212fde35652a6c3df7a..5ba9e19f6ae042b4b4302bff4a99604a54015086 100644 (file)
--- a/doc/bugs/taint_issue_with_regular_expressions.mdwn
+++ b/doc/bugs/taint_issue_with_regular_expressions.mdwn
@@ -19,4 +19,13 @@ which is exactly the same regular expression drawn out as a constant.  It appear
 > checking in the debian package. You can do the same by building ikiwiki
 > with NOTAINT=1. :-( --[[Joey]]
 
-[[tag done]]
+----------------
+Continuing to dig into the problem I reported, it may not be taint after all.  Running strings on the ikiwiki.cgi wrapper, I see stuff like:
+
+    'wiki_file_regexp' => bless( do{\(my $o = undef)}, 'Regexp' )
+
+without any payload of the actual regexp, and that would also certainly also have the observed effect of the regexps being completely broken while running in CGI mode.  This seems to implicate Data::Dumper (2.101).  After upgrading Data::Dumper to 2.121 I get:
+
+    'wiki_file_regexp' => qr/(?-xism:(^[-[:alnum:]_.:\/+]+$))/
+
+This would call for at most an installation prerequisite of Data::Dumper >= 1.121.  A look at the module's changelog shows that no intervening versions were actually released, so 1.121 would be the minimal good one.