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pack.c: avoid returning uninitialized String

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Fix unpacking with 'b', 'B', 'h' and 'H' format. Do not return an
uninitialized String to Ruby before filling the content bytes.
Fixes r11175 ("pack.c (pack_unpack): execute block if given with
unpacked value instead of creating an array", 2006-10-15).
[ruby-core:78841] [Bug #13075]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57187 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
rhe 2016-12-26 06:32:00 +00:00
parent 256d8c9ecf
commit b65b41861f
2 changed files with 16 additions and 4 deletions
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8
test/ruby/test_pack.rb
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@ -838,10 +838,18 @@ EXPECTED
assert_equal addr, [buf].pack('p')
end
def test_unpack_with_block
ret = []; "ABCD".unpack("CCCC") {|v| ret << v }
assert_equal [65, 66, 67, 68], ret
ret = []; "A".unpack("B*") {|v| ret << v }
assert_equal ["01000001"], ret
end
def test_unpack1
assert_equal 65, "A".unpack1("C")
assert_equal 68, "ABCD".unpack1("x3C")
assert_equal 0x3042, "\u{3042 3044 3046}".unpack1("U*")
assert_equal "hogefuga", "aG9nZWZ1Z2E=".unpack1("m")
assert_equal "01000001", "A".unpack1("B*")
end
end