Merge branch 'PHP-8.1' into PHP-8.2

* PHP-8.1:
  Fix GH-11956: PCRE regular expressions with JIT enabled gives different result

Author: nielsdos

NEWS

@@ -13,6 +13,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-12186 (segfault copying/cloning a finalized HashContext).
     (MaxSem)
 
+- PCRE:
+  . Fixed bug GH-11956 (Backport upstream fix, PCRE regular expressions with
+    JIT enabled gives different result). (nielsdos)
+
 - SimpleXML:
   . Fixed bug GH-12170 (Can't use xpath with comments in SimpleXML). (nielsdos)
   . Fixed bug GH-12192 (SimpleXML infinite loop when getName() is called

ext/pcre/pcre2lib/pcre2_jit_compile.c

@@ -11517,19 +11517,19 @@ 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)

ext/pcre/tests/gh11956.phpt

@@ -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"
+}