add mrb_intern_lit for creating symbol from string literal

2 files changed, 3 insertions, 1 deletions

diff --git a/include/mruby.h b/include/mruby.h
index 7306fd8e9..ead22d307 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -239,6 +239,8 @@ const char *mrb_sym2name_len(mrb_state*,mrb_sym,size_t*);
 mrb_value mrb_sym2str(mrb_state*,mrb_sym);
 mrb_value mrb_str_format(mrb_state *, int, const mrb_value *, mrb_value);
 
+#define mrb_intern_lit(mrb, lit) mrb_intern(mrb, (lit), sizeof(lit) - 1)
+
 void *mrb_malloc(mrb_state*, size_t);         /* raise RuntimeError if no mem */
 void *mrb_calloc(mrb_state*, size_t, size_t); /* ditto */
 void *mrb_realloc(mrb_state*, void*, size_t); /* ditto */
diff --git a/include/mruby/hash.h b/include/mruby/hash.h
index d698acf81..6a8b11373 100644
--- a/include/mruby/hash.h
+++ b/include/mruby/hash.h
@@ -35,7 +35,7 @@ mrb_value mrb_hash_clear(mrb_state *mrb, mrb_value hash);
 /* RHASH_TBL allocates st_table if not available. */
 #define RHASH(obj)   ((struct RHash*)(mrb_ptr(obj)))
 #define RHASH_TBL(h)          (RHASH(h)->ht)
-#define RHASH_IFNONE(h)       mrb_iv_get(mrb, (h), mrb_intern(mrb, "ifnone", 6))
+#define RHASH_IFNONE(h)       mrb_iv_get(mrb, (h), mrb_intern_lit(mrb, "ifnone"))
 #define RHASH_PROCDEFAULT(h)  RHASH_IFNONE(h)
 struct kh_ht * mrb_hash_tbl(mrb_state *mrb, mrb_value hash);