Compress::Zlib 1.35

[p5sagit/p5-mst-13.2.git] / hv.h

diff --git a/hv.h b/hv.h
index 6378a02..956f949 100644 (file)
--- a/hv.h
+++ b/hv.h
@@ -14,6 +14,9 @@ typedef struct hek HEK;
 
 /* entry in hash value chain */
 struct he {
+    /* Keep hent_next first in this structure, because sv_free_arenas take
+       advantage of this to share code between the he arenas and the SV
+       body arenas  */
     HE         *hent_next;     /* next entry in chain */
     HEK                *hent_hek;      /* hash key */
     SV         *hent_val;      /* scalar value that was hashed */
@@ -153,7 +156,8 @@ Null HV pointer.
 =head1 Hash Manipulation Functions
 
 =for apidoc Am|char*|HvNAME|HV* stash
-Returns the package name of a stash.  See C<SvSTASH>, C<CvSTASH>.
+Returns the package name of a stash, or NULL if C<stash> isn't a stash.
+See C<SvSTASH>, C<CvSTASH>.
 
 =for apidoc Am|void*|HeKEY|HE* he
 Returns the actual pointer stored in the key slot of the hash entry. The