[patch] fix small errors in sv.c commentary

Message-ID: <466799ED.3090705@gmail.com>

p4raw-id: //depot/perl@31346

diff --git a/sv.c b/sv.c
index 005633a..16e5e72 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -780,16 +780,16 @@ are used for this, except for arena_size.
 For the sv-types that have no bodies, arenas are not used, so those
 PL_body_roots[sv_type] are unused, and can be overloaded.  In
 something of a special case, SVt_NULL is borrowed for HE arenas;
-PL_body_roots[SVt_NULL] is filled by S_more_he, but the
+PL_body_roots[HE_SVSLOT=SVt_NULL] is filled by S_more_he, but the
 bodies_by_type[SVt_NULL] slot is not used, as the table is not
-available in hv.c,
+available in hv.c.
 
-PTEs also use arenas, but are never seen in Perl_sv_upgrade.
-Nonetheless, they get their own slot in bodies_by_type[SVt_NULL], so
-they can just use the same allocation semantics.  At first, PTEs were
-also overloaded to a non-body sv-type, but this yielded hard-to-find
-malloc bugs, so was simplified by claiming a new slot.  This choice
-has no consequence at this time.
+PTEs also use arenas, but are never seen in Perl_sv_upgrade. Nonetheless,
+they get their own slot in bodies_by_type[PTE_SVSLOT =SVt_IV], so they can
+just use the same allocation semantics.  At first, PTEs were also
+overloaded to a non-body sv-type, but this yielded hard-to-find malloc
+bugs, so was simplified by claiming a new slot.  This choice has no
+consequence at this time.
 
 */
 
@@ -869,7 +869,7 @@ static const struct body_details bodies_by_type[] = {
       FALSE, NONV, NOARENA, FIT_ARENA(0, sizeof(HE)) },
 
     /* The bind placeholder pretends to be an RV for now.
-       Also it's marked as "can't upgrade" top stop anyone using it before it's
+       Also it's marked as "can't upgrade" to stop anyone using it before it's
        implemented.  */
     { 0, 0, 0, SVt_BIND, TRUE, NONV, NOARENA, 0 },