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Fix GH-11956: PCRE regular expressions with JIT enabled gives different result #12108

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Fix GH-11956: PCRE regular expressions with JIT enabled gives different result #12108

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20 changes: 10 additions & 10 deletions ext/pcre/pcre2lib/pcre2_jit_compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11286,19 +11286,19 @@ if (exact > 1)
}
}
else if (exact == 1)
{
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);

if (early_fail_type == type_fail_range)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw));
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, TMP2, 0);
OP2(SLJIT_SUB, TMP2, 0, STR_PTR, 0, TMP2, 0);
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_LESS_EQUAL, TMP2, 0, TMP1, 0));
if (early_fail_type == type_fail_range)
{
/* Range end first, followed by range start. */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw));
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, TMP2, 0);
OP2(SLJIT_SUB, TMP2, 0, STR_PTR, 0, TMP2, 0);
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_LESS_EQUAL, TMP2, 0, TMP1, 0));

OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw), STR_PTR, 0);
}
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw), STR_PTR, 0);
}

switch(opcode)
Expand Down
16 changes: 16 additions & 0 deletions ext/pcre/tests/gh11956.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
--TEST--
GH-11956 (PCRE regular expressions with JIT enabled gives different result)
--INI--
pcre.jit=1
--FILE--
<?php
preg_match( '/<(\w+)[\s\w\-]+ id="S44_i89ew">/', '<br><div id="S44_i89ew">', $matches );
var_dump($matches);
?>
--EXPECT--
array(2) {
[0]=>
string(20) "<div id="S44_i89ew">"
[1]=>
string(2) "di"
}