Add failing test for php#11917

Author: danog

ext/opcache/tests/jit/bug11917.phpt

@@ -0,0 +1,73 @@
+--TEST--
+Bug #11917 (primitives seem to be passed via reference instead of by value under some conditions when JIT is enabled on windows)
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.protect_memory=1
+opcache.jit_buffer_size=64M
+opcache.jit=1255
+opcache.jit_max_root_traces=1000000
+opcache.jit_max_side_traces=1000000
+opcache.jit_max_exit_counters=1000000
+opcache.jit_hot_loop=1
+opcache.jit_hot_func=1
+opcache.jit_hot_return=1
+opcache.jit_hot_side_exit=1
+--EXTENSIONS--
+opcache
+--FILE--
+<?php
+$a = [2147483647,2147483647,2147483647,3,0,0,32,2147483584,127];
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+
+function bitwise_small_split($val)
+{
+    $split = 8;
+    $vals = [];
+
+    $mask = (1 << $split) - 1;
+
+    $i = $overflow = 0;
+    $len = count($val);
+    $val[] = 0;
+    $remaining = 31;
+
+    while ($i != $len) {
+        $digit = $val[$i] & $mask;
+
+        $val[$i] >>= $split;
+        if (!$overflow) {
+            $remaining -= $split;
+            $overflow = $split <= $remaining ? 0 : $split - $remaining;
+
+            if (!$remaining) {
+                $i++;
+                $remaining = 31;
+                $overflow = 0;
+            }
+        } elseif (++$i != $len) {
+            $tempmask = (1 << $overflow) - 1;
+            $digit |= ($val[$i] & $tempmask) << $remaining;
+            $val[$i] >>= $overflow;
+            $remaining = 31 - $overflow;
+            $overflow = $split <= $remaining ? 0 : $split - $remaining;
+        }
+
+        $vals[] = $digit;
+    }
+
+    while ($vals[count($vals) - 1] == 0) {
+        unset($vals[count($vals) - 1]);
+    }
+
+    return array_reverse($vals);
+}
+?>
+--EXPECT--
+48207660
+48207660
+48207660
+48207660