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-rw-r--r--include/ruby/ruby.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 2d6ba66e5c..8fc1eb0f03 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -384,6 +384,7 @@ enum ruby_value_type {
#define BUILTIN_TYPE(x) (int)(((struct RBasic*)(x))->flags & T_MASK)
+static inline int rb_type(VALUE obj);
#define TYPE(x) rb_type((VALUE)(x))
#define RB_GC_GUARD(v) (*(volatile VALUE *)&(v))