Ruby » Ruby master

Bug #13266

Updated by nobu (Nobuyoshi Nakada) about 7 years ago

``` 
 even_nums = [2,4,6,8,10] 

 2.3.1 :007 > even_nums[5,0] 
  => [] 
  # it must return nil as index is out of bound when slicing 
  # it may be due to the code written in ruby.c 
 =begin 
  if (argc == 2) { 
     if (SYMBOL_P(argv[0])) { 
         rb_raise(rb_eTypeError, "Symbol as array index"); 
     } 
     beg = NUM2LONG(argv[0]); 
     len = NUM2LONG(argv[1]); 
     if (beg < 0) { 
         beg += RARRAY(ary)->len; 
     } 
     return rb_ary_subseq(ary, beg, len); 
 } 
 =end 
 # beg will store 5 in it and then this value is compared with RARRAY_LEN(ary) 
 # in code it is defined that if (beg > RARRAY_LEN(ary)) return Qnil; 
 # it must be corrected and checked with the index of the array rather then size of array 
 2.3.1 :008 > even_nums[6,0] 
  => nil

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