[perl #126469] document the ob parameter to sv_reftype()

diff --git a/sv.c b/sv.c
index 5366ae0..d23cd75 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -9933,6 +9933,9 @@ Perl_sv_pvutf8n_force(pTHX_ SV *const sv, STRLEN *const lp)
 
 Returns a string describing what the SV is a reference to.
 
+If ob is true and the SV is blessed, the string is the class name,
+otherwise it is the type of the SV, "SCALAR", "ARRAY" etc.
+
 =cut
 */