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encoding.c: handle needmore error from rb_enc_precise_mbclen()

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rb_enc_ascget() erroneously reports success even if the given byte
sequence is incomplete, for non-ASCII compatible encoding strings.

rb_enc_precise_mbclen() may return a negative value on error, and thus
rb_enc_ascget() must not store the return value in 'unsigned int';
otherwise the subsequent MBCLEN_CHARFOUND_P() check won't catch the
error.  [ruby-core:78646] [Bug #13034]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57078 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
rhe 2016-12-14 12:32:42 +00:00
parent 72c1b322c7
commit 201972ac4c
2 changed files with 6 additions and 1 deletions
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3
encoding.c
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@ -1031,7 +1031,8 @@ rb_enc_precise_mbclen(const char *p, const char *e, rb_encoding *enc)
int
rb_enc_ascget(const char *p, const char *e, int *len, rb_encoding *enc)
{
unsigned int c, l;
unsigned int c;
int l;
if (e <= p)
return -1;
if (rb_enc_asciicompat(enc)) {

4
test/ruby/test_regexp.rb
View file

@ -567,6 +567,10 @@ class TestRegexp < Test::Unit::TestCase
assert_equal("\\v", Regexp.quote("\v"))
assert_equal("\u3042\\t", Regexp.quote("\u3042\t"))
assert_equal("\\t\xff", Regexp.quote("\t" + [0xff].pack("C")))
bug13034 = '[ruby-core:78646] [Bug #13034]'
str = "\x00".force_encoding("UTF-16BE")
assert_equal(str, Regexp.quote(str), bug13034)
end
def test_try_convert