Commit f706089dce for perl

commit f706089dce566d8fe1e124fcd1cc74cb60ed7015
Author: Richard Leach <rich+perl@hyphen-dash-hyphen.info>
Date:   Thu Sep 10 10:44:09 2026 +0000

    bodies_by_type: SVt_PVFM bodies use an arena, just like all other bodies

    On a build that uses SV arenas, only the SVt_PVFM body is allocated,
    with all other types being bodiless (e.g. SVt_IV) or using arenas.

    Hot functions that add or remove bodies therefore have to perform a
    check - which is effectively for a rare type - every time and contain
    code to deal with both arenas & allocations.

    This commit makes this body type also use an arena, allowing for
    simplification of any core function that adds or removes a body.

diff --git a/sv_inline.h b/sv_inline.h
index 272c791ef4..b78bc806e8 100644
--- a/sv_inline.h
+++ b/sv_inline.h
@@ -281,7 +281,7 @@ static const struct body_details bodies_by_type[] = {
     { sizeof(ALIGNED_TYPE_NAME(XPVFM)),
       sizeof(XPVFM),
       0,
-      SVt_PVFM, TRUE, NONV, NOARENA,
+      SVt_PVFM, TRUE, NONV, HASARENA,
       FIT_ARENA(20, sizeof(ALIGNED_TYPE_NAME(XPVFM))) },

     { sizeof(ALIGNED_TYPE_NAME(XPVIO)),