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* ext/stringio/stringio.c (strio_write): insufficiently filled string

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being extended when overwriting.  [ruby-core:03836]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7417 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2004-11-29 07:06:21 +00:00
parent 37eb7502db
commit af7418e5c4
3 changed files with 16 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Nov 29 16:06:04 2004 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/stringio/stringio.c (strio_write): insufficiently filled string
being extended when overwriting. [ruby-core:03836]
Mon Nov 29 15:22:28 2004 Nobuyoshi Nakada <nobu@ruby-lang.org>
* test/io/nonblock/test_flush.rb: abandon tests when io/nonblock is

2
ext/stringio/stringio.c
View file

@ -794,7 +794,7 @@ strio_write(self, str)
else {
if (ptr->pos + len > olen) {
rb_str_resize(ptr->string, ptr->pos + len);
MEMZERO(RSTRING(ptr->string)->ptr + olen, char, ptr->pos - olen);
MEMZERO(RSTRING(ptr->string)->ptr + olen, char, ptr->pos + len - olen);
}
else {
rb_str_modify(ptr->string);

10
test/stringio/test_stringio.rb
View file

@ -30,4 +30,14 @@ class TestStringIO < Test::Unit::TestCase
io.print "last"
assert_equal("\0" * n + "last", io.string)
end
def test_overwrite # [ruby-core:03836]
stringio = StringIO.new
responses = ['', 'just another ruby', 'hacker']
responses.each do |resp|
stringio.puts(resp)
stringio.rewind
end
assert_equal("hacker\nother ruby\n", stringio.string)
end
end