Move the bool v_string_ok into the U16-sized gap in the interpreter

structure. Add a "spare" variable so that we can add the first post-
5.10.0 bool variable without growing the interpreter structure.

p4raw-id: //depot/perl@31987

diff --git a/intrpvar.h b/intrpvar.h
index 6fd9b5d..0c7659a 100644 (file)
--- a/intrpvar.h
+++ b/intrpvar.h
@@ -162,7 +162,13 @@ PERLVAR(Iregdummy, regnode)        /* from regcomp.c */
 PERLVARI(Idumpindent,  U16,    4)      /* number of blanks per dump
                                           indentation level */
 
-/* Space for U16 here without increasing the structure size */
+PERLVARI(Iv_string_ok, bool, FALSE)    /* use/require v_string OK */
+
+/* This would be space for U8 here without increasing the structure size
+   so name the space, so that the first post 5.10 need for a bool can use this
+   rather than padding at the end.  */
+
+PERLVARI(Ispare_510,   bool, FALSE)    /*  */
 
 PERLVARA(Icolors,6,    char *)         /* from regcomp.c */
 
@@ -670,8 +676,6 @@ PERLVARI(Islab_count, U32, 0)       /* Size of the array */
 
 PERLVARI(Iisarev, HV*, NULL)   /* Reverse map of @ISA dependencies */
 
-PERLVARI(Iv_string_ok, bool, FALSE)    /* use/require v_string OK */
-
 /* If you are adding a U8 or U16, see the 'Space' comments above on where
  * there are gaps which currently will be structure padding.  */