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-rw-r--r--include/mruby/value.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/mruby/value.h b/include/mruby/value.h
index f988826ca..1ed20858f 100644
--- a/include/mruby/value.h
+++ b/include/mruby/value.h
@@ -160,6 +160,10 @@ typedef void mrb_value;
#ifndef mrb_bool
#define mrb_bool(o) (mrb_type(o) != MRB_TT_FALSE)
#endif
+#if !defined(MRB_SYMBOL_BITSIZE)
+#define MRB_SYMBOL_BITSIZE (sizeof(mrb_sym) * CHAR_BIT)
+#define MRB_SYMBOL_MAX UINT32_MAX
+#endif
#ifndef MRB_WITHOUT_FLOAT
#define mrb_float_p(o) (mrb_type(o) == MRB_TT_FLOAT)
#endif