make gv_fullname() etc include a literal '^' for *^FOO style names

p4raw-id: //depot/perl@22606

2 files changed, 11 insertions, 2 deletions

diff --git a/gv.c b/gv.c
index 8a270650b9..b2ae13c46a 100644
--- a/gv.c
+++ b/gv.c
@@ -1096,7 +1096,13 @@ Perl_gv_fullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain)
 	sv_catpv(sv,name);
 	sv_catpvn(sv,"::", 2);
     }
-    sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
+    if (((unsigned int)*GvNAME(gv)) <= 26) { /* handle $^FOO */
+	Perl_sv_catpvf(aTHX_ sv,"^%c", *GvNAME(gv) + 'A' - 1);
+	sv_catpvn(sv,GvNAME(gv)+1,GvNAMELEN(gv)-1);
+    }
+    else
+	sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
+    
 }
 
 void
diff --git a/t/op/gv.t b/t/op/gv.t
index 5b1237a9c8..851f6b1c77 100755
--- a/t/op/gv.t
+++ b/t/op/gv.t
@@ -11,7 +11,7 @@ BEGIN {
 
 use warnings;
 
-print "1..52\n";
+print "1..53\n";
 
 # type coersion on assignment
 $foo = 'foo';
@@ -242,6 +242,9 @@ print $j[0] == 1 ? "ok 43\n" : "not ok 43\n";
     print $x || "not ok 52\n";
 }
 
+# stringified typeglob should escape leading control char
+print *^A eq "*main::^A" ? "ok 53\n" : "not ok 53\n";
+
 __END__
 ok 44
 ok 48