* array.c (rb_ary_fill): tail elements were vanished when the middle

  part of array was filled. (ie: [0,1,2,3,4].fill(-1,2,1) => [0,1,-1])

* test/ruby/test_array.rb (test_fill): added.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 5 deletions

diff --git a/array.c b/array.c
index abf3ab7218..9ca499b5ef 100644
--- a/array.c
+++ b/array.c
@@ -2137,9 +2137,13 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
 	    REALLOC_N(RARRAY(ary)->ptr, VALUE, end);
 	    RARRAY(ary)->aux.capa = end;
 	}
-	if (beg > RARRAY(ary)->len) {
-	    rb_mem_clear(RARRAY(ary)->ptr + RARRAY(ary)->len, end - RARRAY(ary)->len);
-	}
+	RARRAY(ary)->len = end;
+    }
+    if (beg > RARRAY(ary)->len) {
+	rb_mem_clear(RARRAY(ary)->ptr + RARRAY(ary)->len, end - RARRAY(ary)->len);
+    }
+    else {
+	rb_mem_clear(RARRAY(ary)->ptr + beg, end - beg);
     }
 
     if (block_p) {
@@ -2150,11 +2154,9 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
 	    v = rb_yield(LONG2NUM(i));
 	    if (i>=RARRAY(ary)->len) break;
 	    RARRAY(ary)->ptr[i] = v;
-	    RARRAY(ary)->len = i+1;
 	}
     }
     else {
-	RARRAY(ary)->len = end;
 	p = RARRAY(ary)->ptr + beg;
 	pend = p + len;
 	while (p < pend) {