Raise NameError as defined in specification when Struct member isn't found.

mrbgems/mruby-struct/src/struct.c

@@ -512,7 +512,7 @@ struct_aref_sym(mrb_state *mrb, mrb_value s, mrb_sym id)
       return ptr[i];
     }
   }
-  mrb_raisef(mrb, E_INDEX_ERROR, "no member '%S' in struct", mrb_sym2str(mrb, id));
+  mrb_name_error(mrb, id, "no member '%S' in struct", mrb_sym2str(mrb, id));
   return mrb_nil_value();       /* not reached */
 }
 
@@ -560,7 +560,7 @@ mrb_struct_aref(mrb_state *mrb, mrb_value s)
     mrb_value sym = mrb_check_intern_str(mrb, idx);
 
     if (mrb_nil_p(sym)) {
-      mrb_raisef(mrb, E_INDEX_ERROR, "no member '%S' in struct", idx);
+      mrb_name_error(mrb, mrb_intern_str(mrb, idx), "no member '%S' in struct", idx);
     }
     idx = sym;
   }
@@ -591,7 +591,7 @@ mrb_struct_aset_sym(mrb_state *mrb, mrb_value s, mrb_sym id, mrb_value val)
       return val;
     }
   }
-  mrb_raisef(mrb, E_INDEX_ERROR, "no member '%S' in struct", mrb_sym2str(mrb, id));
+  mrb_name_error(mrb, id, "no member '%S' in struct", mrb_sym2str(mrb, id));
   return val;                   /* not reach */
 }
 
@@ -630,7 +630,7 @@ mrb_struct_aset(mrb_state *mrb, mrb_value s)
     mrb_value sym = mrb_check_intern_str(mrb, idx);
 
     if (mrb_nil_p(sym)) {
-      mrb_raisef(mrb, E_INDEX_ERROR, "no member '%S' in struct", idx);
+      mrb_name_error(mrb, mrb_intern_str(mrb, idx), "no member '%S' in struct", idx);
     }
     idx = sym;
   }

mrbgems/mruby-struct/test/struct.rb

@@ -34,6 +34,7 @@ assert('Struct#[]', '15.2.18.4.2') do
   assert_equal 2, cc[-1]
   assert_raise(TypeError) { cc[[]] }
   assert_raise(IndexError) { cc[2] }
+  assert_raise(NameError) { cc['tama'] }
 end
 
 assert('Struct#[]=', '15.2.18.4.3') do
@@ -49,6 +50,7 @@ assert('Struct#[]=', '15.2.18.4.3') do
   assert_equal 5, cc[-1]
   assert_raise(TypeError) { cc[[]] = 3 }
   assert_raise(IndexError) { cc[2] = 7 }
+  assert_raise(NameError) { cc['pochi'] = 8 }
 end
 
 assert('Struct#each', '15.2.18.4.4') do