Enable MRB_METHOD_T_STRUCT by default on 32bit GUN/Linux

Because we can't use the highest 2 bits of function pointers.

Enable MRB_METHOD_T_STRUCT by default on 32bit GUN/Linux
Because we can't use the highest 2 bits of function pointers.
a5bfe548 · Horimoto Yasuhiro · 84aad399 · a5bfe548
Commit a5bfe548 authored Apr 30, 2020 by Horimoto Yasuhiro
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include/mrbconf.h include/mrbconf.h +3 -2

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--- a/include/mrbconf.h
+++ b/include/mrbconf.h
@@ -39,8 +39,9 @@
 /* add -DMRB_METHOD_T_STRUCT on machines that use higher bits of pointers */
 /* no MRB_METHOD_T_STRUCT requires highest 2 bits of function pointers to be zero */
 #ifndef MRB_METHOD_T_STRUCT
-  // can't use highest 2 bits of function pointers on 32bit Windows.
-# if defined(_WIN32) && !defined(_WIN64)
+  // can't use highest 2 bits of function pointers at least on 32bit
+  // Windows and 32bit Linux.
+# ifdef MRB_32BIT
 #   define MRB_METHOD_T_STRUCT
 # endif
 #endif