From Inaba Hiroto: re_intuit_start set a value to

PL_bostr before calling find_byclass when regexp has
ROPT_UTF8 flag on. But right value for PL_bostr is set
before re_intuit_start is called.  PL_regdata is always
assigned by cache_re(), so the whole if(prog->reganch & ROPT_UTF8){}
can be deleted.

p4raw-id: //depot/perl@18858

2 files changed, 11 insertions, 5 deletions

diff --git a/regexec.c b/regexec.c
index 6d18de4a7c..4692dcdf04 100644
--- a/regexec.c
+++ b/regexec.c
@@ -852,10 +852,6 @@ Perl_re_intuit_start(pTHX_ regexp *prog, SV *sv, char *strpos,
 	char *startpos = strbeg;
 
 	t = s;
-	if (prog->reganch & ROPT_UTF8) {	
-	    PL_regdata = prog->data;
-	    PL_bostr = startpos;
-	}
 	cache_re(prog);
 	s = find_byclass(prog, prog->regstclass, s, endpos, startpos, 1);
 	if (!s) {
diff --git a/t/op/pat.t b/t/op/pat.t
index 54f7d144d7..85ec2c230a 100755
--- a/t/op/pat.t
+++ b/t/op/pat.t
@@ -3149,4 +3149,14 @@ ok("bbbbac" =~ /$pattern/ && $1 eq 'a', "[perl #3547]");
     ok("\x{100}\n" =~ /\x{100}\n$/, "UTF8 length cache and fbm_compile");  
 }
 
-# last test 995
+{
+    package Str;
+    use overload q/""/ => sub { ${$_[0]}; };
+    sub new { my ($c, $v) = @_; bless \$v, $c; }
+
+    package main;
+    $_ = Str->new("a\x{100}/\x{100}b");
+    ok(join(":", /\b(.)\x{100}/g) eq "a:/", "re_intuit_start and PL_bostr");
+}
+
+# last test 996