Merge pull request #788 from masamitsu-murase/modify_range_initialize

Modify range initialize to prevent segmentation fault.

src/range.c

@@ -43,8 +43,8 @@ mrb_range_new(mrb_state *mrb, mrb_value beg, mrb_value end, int excl)
   struct RRange *r;
 
   r = (struct RRange*)mrb_obj_alloc(mrb, MRB_TT_RANGE, RANGE_CLASS);
-  r->edges = (struct mrb_range_edges *)mrb_malloc(mrb, sizeof(struct mrb_range_edges));
   range_check(mrb, beg, end);
+  r->edges = (struct mrb_range_edges *)mrb_malloc(mrb, sizeof(struct mrb_range_edges));
   r->edges->beg = beg;
   r->edges->end = end;
   r->excl = excl;

test/t/range.rb

@@ -48,14 +48,13 @@ assert('Range#include', '15.2.14.4.8') do
   a.include?(5) and not a.include?(20)
 end
 
-# TODO SEGFAULT ATM
-#assert('Range#initialize', '15.2.14.4.9') do
-#  a = Range.new(1, 10, true)
-#  b = Range.new(1, 10, false)
-#
-#  a == (1..10) and a.exclude_end? and b == (1..10) and
-#    not b.exclude_end?
-#end
+assert('Range#initialize', '15.2.14.4.9') do
+  a = Range.new(1, 10, true)
+  b = Range.new(1, 10, false)
+
+  a == (1...10) and a.exclude_end? and b == (1..10) and
+    not b.exclude_end?
+end
 
 assert('Range#last', '15.2.14.4.10') do
   (1..10).last == 10