diff options
| -rw-r--r-- | io_buffer.c | 5 | ||||
| -rw-r--r-- | test/ruby/test_io_buffer.rb | 18 |
2 files changed, 23 insertions, 0 deletions
diff --git a/io_buffer.c b/io_buffer.c index 91083cd7e4..1ff3935094 100644 --- a/io_buffer.c +++ b/io_buffer.c @@ -1422,6 +1422,11 @@ rb_io_buffer_resize(VALUE self, size_t size) #endif if (data->flags & RB_IO_BUFFER_INTERNAL) { + if (size == 0) { + io_buffer_free(data); + return; + } + void *base = realloc(data->base, size); if (!base) { diff --git a/test/ruby/test_io_buffer.rb b/test/ruby/test_io_buffer.rb index 55e347471d..e29400d76e 100644 --- a/test/ruby/test_io_buffer.rb +++ b/test/ruby/test_io_buffer.rb @@ -156,6 +156,24 @@ class TestIOBuffer < Test::Unit::TestCase assert_equal message, buffer.get_string(0, message.bytesize) end + def test_resize_zero_internal + buffer = IO::Buffer.new(1) + + buffer.resize(0) + assert_equal 0, buffer.size + + buffer.resize(1) + assert_equal 1, buffer.size + end + + def test_resize_zero_external + buffer = IO::Buffer.for('1') + + assert_raise IO::Buffer::AccessError do + buffer.resize(0) + end + end + def test_compare_same_size buffer1 = IO::Buffer.new(1) assert_equal buffer1, buffer1 |