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Fix #79846: 8c67c16699 broke simple regexp

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We backport the respective upstream fix[1].

[1] <https://vcs.pcre.org/pcre2?view=revision&revision=1267>
This commit is contained in:
Christoph M. Becker 2020-07-15 18:45:55 +02:00
parent 03a98d9420
commit 4659c12ae0
2 changed files with 29 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

24
ext/pcre/pcre2lib/pcre2_jit_compile.c
View file

@ -1466,9 +1466,9 @@ do
default:
accelerated_start = NULL;
fast_forward_allowed = FALSE;
break;
}
continue;
}
break;
case OP_ONCE:
case OP_BRA:
@ -1834,57 +1834,57 @@ while (cc < ccend)
case OP_BRAZERO:
case OP_BRAMINZERO:
case OP_BRAPOSZERO:
repeat_check = FALSE;
size = 1;
repeat_check = FALSE;
break;
CASE_ITERATOR_PRIVATE_DATA_1
space = 1;
size = -2;
space = 1;
break;
CASE_ITERATOR_PRIVATE_DATA_2A
space = 2;
size = -2;
space = 2;
break;
CASE_ITERATOR_PRIVATE_DATA_2B
space = 2;
size = -(2 + IMM2_SIZE);
space = 2;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_1
space = 1;
size = 1;
space = 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2A
size = 1;
if (cc[1] != OP_ANYNL && cc[1] != OP_EXTUNI)
space = 2;
size = 1;
break;
case OP_TYPEUPTO:
size = 1 + IMM2_SIZE;
if (cc[1 + IMM2_SIZE] != OP_ANYNL && cc[1 + IMM2_SIZE] != OP_EXTUNI)
space = 2;
size = 1 + IMM2_SIZE;
break;
case OP_TYPEMINUPTO:
space = 2;
size = 1 + IMM2_SIZE;
space = 2;
break;
case OP_CLASS:
case OP_NCLASS:
space = get_class_iterator_size(cc + size);
size = 1 + 32 / sizeof(PCRE2_UCHAR);
space = get_class_iterator_size(cc + size);
break;
#if defined SUPPORT_UNICODE || PCRE2_CODE_UNIT_WIDTH != 8
case OP_XCLASS:
space = get_class_iterator_size(cc + size);
size = GET(cc, 1);
space = get_class_iterator_size(cc + size);
break;
#endif

17
ext/pcre/tests/bug79846.phpt Normal file
View file

@ -0,0 +1,17 @@
--TEST--
Bug #79846 (8c67c166996 broke simple regexp)
--FILE--
<?php
$item = "component_phase_1";
preg_match("/([a-z]+_[a-z]+_*[a-z]+)_?(\d+)?/", $item, $match);
var_dump($match);
?>
--EXPECT--
array(3) {
[0]=>
string(17) "component_phase_1"
[1]=>
string(15) "component_phase"
[2]=>
string(1) "1"
}