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-rw-r--r--sv.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sv.h b/sv.h
index ed253839fd..c80c2aaf84 100644
--- a/sv.h
+++ b/sv.h
@@ -339,7 +339,9 @@ perform the upgrade if necessary. See C<svtype>.
means that a hv_aux struct is present
after the main array */
#define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by
- SV's in final arena cleanup */
+ SVs in final arena cleanup.
+ Set in S_regtry on PL_reg_curpm, so that
+ perl_destruct will skip it. */
#define SVf_READONLY 0x08000000 /* may not be modified */