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[Bug #19924] Source code should be unsigned char stream

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Use `peekc` or `nextc` to fetch the next character, instead of reading
from `lex.pcur` directly, for compilers that plain char is signed.
This commit is contained in:
Nobuyoshi Nakada 2023-10-13 02:28:35 +09:00
parent 2dca02e273
commit 17b0643392
No known key found for this signature in database
GPG key ID: 3582D74E1FEE4465
2 changed files with 7 additions and 5 deletions
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10
parse.y
View file

@ -7911,9 +7911,9 @@ tokadd_utf8(struct parser_params *p, rb_encoding **encp,
* invalid unicode escapes are allowed in comments. The regexp parser
* does its own validation and will catch any issues.
*/
int c = *p->lex.pcur;
tokadd(p, c);
for (c = *++p->lex.pcur; p->lex.pcur < p->lex.pend; c = *++p->lex.pcur) {
tokadd(p, open_brace);
while (++p->lex.pcur < p->lex.pend) {
int c = peekc(p);
if (c == close_brace) {
tokadd(p, c);
++p->lex.pcur;
@ -8310,7 +8310,7 @@ tokadd_string(struct parser_params *p,
--*nest;
}
else if ((func & STR_FUNC_EXPAND) && c == '#' && !lex_eol_p(p)) {
int c2 = *p->lex.pcur;
unsigned char c2 = *p->lex.pcur;
if (c2 == '$' || c2 == '@' || c2 == '{') {
pushback(p, c);
break;
@ -9916,7 +9916,7 @@ parse_qmark(struct parser_params *p, int space_seen)
enc = rb_utf8_encoding();
tokadd_utf8(p, &enc, -1, 0, 0);
}
else if (!lex_eol_p(p) && !(c = *p->lex.pcur, ISASCII(c))) {
else if (!ISASCII(c = peekc(p))) {
nextc(p);
if (tokadd_mbchar(p, c) == -1) return 0;
}

2
test/ruby/test_parse.rb
View file

@ -633,6 +633,8 @@ class TestParse < Test::Unit::TestCase
assert_syntax_error("?\\M-\x01", 'Invalid escape character syntax')
assert_syntax_error("?\\M-\\C-\x01", 'Invalid escape character syntax')
assert_syntax_error("?\\C-\\M-\x01", 'Invalid escape character syntax')
assert_equal("\xff", eval("# encoding: ascii-8bit\n""?\\\xFF"))
end
def test_percent