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-rw-r--r--yarvcore.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/yarvcore.h b/yarvcore.h
index d72ed96951..149a57fd10 100644
--- a/yarvcore.h
+++ b/yarvcore.h
@@ -537,7 +537,7 @@ VALUE rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, const rb_compile_o
VALUE ruby_iseq_disasm(VALUE self);
VALUE ruby_iseq_disasm_insn(VALUE str, VALUE *iseqval, int pos,
rb_iseq_t *iseq, VALUE child);
-char *ruby_node_name(int node);
+const char *ruby_node_name(int node);
/* each thread has this size stack : 2MB */