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Just free compiled pattern if no space is used

Browse source 
https://hackerone.com/reports/1220911
This commit is contained in:
Nobuyoshi Nakada 2021-06-11 00:06:43 +09:00
parent 48ffa28044
commit cf2bbcfff2
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GPG key ID: 7CD2805BFA3770C6
Notes: git 2022-04-12 21:25:49 +09:00 
Merged: https://github.com/ruby/ruby/pull/5793
2 changed files with 17 additions and 6 deletions
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14
regcomp.c
View file

@ -142,8 +142,13 @@ bitset_on_num(BitSetRef bs)
static void
onig_reg_resize(regex_t *reg)
{
resize:
if (reg->alloc > reg->used) {
do {
if (!reg->used) {
xfree(reg->p);
reg->alloc = 0;
reg->p = 0;
}
else if (reg->alloc > reg->used) {
unsigned char *new_ptr = xrealloc(reg->p, reg->used);
// Skip the right size optimization if memory allocation fails
if (new_ptr) {
@ -151,10 +156,7 @@ onig_reg_resize(regex_t *reg)
reg->p = new_ptr;
}
}
if (reg->chain) {
reg = reg->chain;
goto resize;
}
} while ((reg = reg->chain) != 0);
}
extern int

9
test/ruby/test_regexp.rb
View file

@ -1431,6 +1431,15 @@ class TestRegexp < Test::Unit::TestCase
assert_kind_of MatchData, /(?<x>a)(?<x>aa)\k<x>/.match("aaaab")
end
def test_invalid_group
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
assert_raise_with_message(RegexpError, /invalid conditional pattern/) do
Regexp.new("((?(1)x|x|)x)+")
end
end;
end
# This assertion is for porting x2() tests in testpy.py of Onigmo.
def assert_match_at(re, str, positions, msg = nil)
re = Regexp.new(re) unless re.is_a?(Regexp)