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-rw-r--r--intrpvar.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/intrpvar.h b/intrpvar.h
index 8a3dba2674..5d583f06f0 100644
--- a/intrpvar.h
+++ b/intrpvar.h
@@ -623,6 +623,12 @@ PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
+/* The last unconditional member of the interpreter structure when 5.10.0 was
+ released. The offset of the end of this is baked into a global variable in
+ any shared perl library which will allow a sanity test in future perl
+ releases. */
+#define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
+
#ifdef PERL_IMPLICIT_CONTEXT
PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */