diff options
| author | rhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-09-13 07:08:15 +0000 |
|---|---|---|
| committer | rhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-09-13 07:08:15 +0000 |
| commit | be3baa4380dcc452299af0a9d26e08e3df56110d (patch) | |
| tree | 5a7f9660f2cc01ee433189d809d975e59e2b1a58 /test/-ext-/string/test_set_len.rb | |
| parent | b4d0e5a4fb607e1e19abba99858dce42cc3cf188 (diff) | |
string.c: fix buffer overflow check condition in rb_str_set_len()
* string.c (rb_str_set_len): The buffer overflow check is wrong. The
space for termlen is allocated outside the capacity returned by
rb_str_capacity(). This fixes r41920 ("string.c: multi-byte
terminator", 2013-07-11). [ruby-core:77257] [Bug #12757]
* test/-ext-/string/test_set_len.rb (test_capacity_equals_to_new_size):
Test for this change. Applying only the test will trigger [BUG].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/-ext-/string/test_set_len.rb')
| -rw-r--r-- | test/-ext-/string/test_set_len.rb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/-ext-/string/test_set_len.rb b/test/-ext-/string/test_set_len.rb index 1c5252a5f6..58f51012fb 100644 --- a/test/-ext-/string/test_set_len.rb +++ b/test/-ext-/string/test_set_len.rb @@ -23,4 +23,13 @@ class Test_StrSetLen < Test::Unit::TestCase assert_equal("abc", @s1.set_len(3)) } end + + def test_capacity_equals_to_new_size + bug12757 = "[ruby-core:77257] [Bug #12757]" + # fill to ensure capacity does not decrease with force_encoding + str = Bug::String.new("\x00" * 128, capacity: 128) + str.force_encoding("UTF-32BE") + assert_equal 128, Bug::String.capacity(str) + assert_equal 127, str.set_len(127).bytesize, bug12757 + end end |