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* parse.y (parser_tokadd_string, parser_yylex): ignore a backslash

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which prefixes an non-ascii character, which has no escape
  syntax.  [ruby-core:39222] [Ruby 1.9 - Bug #5262]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33161 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2011-09-02 00:58:10 +00:00
parent 8659de2e0f
commit 5e14b97947
3 changed files with 34 additions and 2 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Fri Sep 2 09:58:08 2011 Nobuyoshi Nakada <nobu@ruby-lang.org>
* parse.y (parser_tokadd_string, parser_yylex): ignore a backslash
which prefixes an non-ascii character, which has no escape
syntax. [ruby-core:39222] [Ruby 1.9 - Bug #5262]
Fri Sep 2 04:05:25 2011 Aaron Patterson <aaron@tenderlovemaking.com>
* ext/psych/lib/psych/visitors/yaml_tree.rb: emit strings tagged as

8
parse.y
View file

@ -5411,6 +5411,7 @@ parser_str_new(const char *p, long n, rb_encoding *enc, int func, rb_encoding *e
}
#define lex_goto_eol(parser) ((parser)->parser_lex_p = (parser)->parser_lex_pend)
#define lex_eol_p() (lex_p >= lex_pend)
#define peek(c) peek_n((c), 0)
#define peek_n(c,n) (lex_p+(n) < lex_pend && (c) == (unsigned char)lex_p[n])
@ -5920,6 +5921,8 @@ parser_tokadd_string(struct parser_params *parser,
continue;
default:
if (c == -1) return -1;
if (!ISASCII(c)) goto non_ascii;
if (func & STR_FUNC_REGEXP) {
pushback(c);
if ((c = tokadd_escape(&enc)) < 0)
@ -5945,6 +5948,7 @@ parser_tokadd_string(struct parser_params *parser,
}
}
else if (!parser_isascii()) {
non_ascii:
has_nonascii = 1;
if (enc != *encp) {
mixed_error(enc, *encp);
@ -7003,6 +7007,10 @@ parser_yylex(struct parser_params *parser)
tokadd(c);
}
}
else if (!lex_eol_p() && !(c = *lex_p, ISASCII(c))) {
nextc();
if (tokadd_mbchar(c) == -1) return 0;
}
else {
c = read_escape(0, &enc);
tokadd(c);

20
test/ruby/test_literal.rb
View file

@ -53,15 +53,33 @@ class TestRubyLiteral < Test::Unit::TestCase
assert_equal "3", "\x33"
assert_equal "\n", "\n"
bug2500 = '[ruby-core:27228]'
bug5262 = '[ruby-core:39222]'
%w[c C- M-].each do |pre|
["u", %w[u{ }]].each do |open, close|
str = "\"\\#{pre}\\#{open}5555#{close}\""
["?", ['"', '"']].each do |qopen, qclose|
str = "#{qopen}\\#{pre}\\#{open}5555#{close}#{qclose}"
assert_raise(SyntaxError, "#{bug2500} eval(#{str})") {eval(str)}
str = "#{qopen}\\#{pre}\\#{open}\u201c#{close}#{qclose}"
assert_raise(SyntaxError, "#{bug5262} eval(#{str})") {eval(str)}
str = "#{qopen}\\#{pre}\\#{open}\u201c#{close}#{qclose}".encode("euc-jp")
assert_raise(SyntaxError, "#{bug5262} eval(#{str})") {eval(str)}
str = "#{qopen}\\#{pre}\\#{open}\u201c#{close}#{qclose}".encode("iso-8859-13")
assert_raise(SyntaxError, "#{bug5262} eval(#{str})") {eval(str)}
str = "#{qopen}\\#{pre}\\#{open}\xe2\x7f#{close}#{qclose}".force_encoding("utf-8")
assert_raise(SyntaxError, "#{bug5262} eval(#{str})") {eval(str)}
end
end
end
assert_equal "\x13", "\c\x33"
assert_equal "\x13", "\C-\x33"
assert_equal "\xB3", "\M-\x33"
assert_equal "\u201c", eval(%["\\\u{201c}"]), bug5262
assert_equal "\u201c".encode("euc-jp"), eval(%["\\\u{201c}"].encode("euc-jp")), bug5262
assert_equal "\u201c".encode("iso-8859-13"), eval(%["\\\u{201c}"].encode("iso-8859-13")), bug5262
end
def test_dstring