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JIT compiler in 1255 mode produces wrong result of arithmetical operations #20838

@HubbGit

Description

@HubbGit

Description

The following code:

<?php
$result = json_decode( '[{"ID":"49"},{"ID":"1080"},{"ID":"4415"},{"ID":"4763"},{"ID":"4926"},{"ID":"4933"},{"ID":"4935"},{"ID":"4938"},{"ID":"4939"},{"ID":"4947"},{"ID":"4952"},{"ID":"4953"},{"ID":"4962"},{"ID":"8558"},{"ID":"14888"},{"ID":"16879"},{"ID":"100003"},{"ID":"100007"},{"ID":"100013"},{"ID":"100017"},{"ID":"100019"},{"ID":"100027"},{"ID":"100031"},{"ID":"106427"},{"ID":"217955"},{"ID":"240000"},{"ID":"240010"},{"ID":"240021"},{"ID":"240079"},{"ID":"240210"},{"ID":"240227"},{"ID":"240249"},{"ID":"240273"},{"ID":"240333"},{"ID":"240335"},{"ID":"300024"},{"ID":"310001"},{"ID":"310025"},{"ID":"310034"},{"ID":"310042"},{"ID":"310111"},{"ID":"310191"},{"ID":"310219"},{"ID":"310236"},{"ID":"310322"},{"ID":"310356"},{"ID":"310360"},{"ID":"310394"},{"ID":"310405"},{"ID":"310411"}]', true );

$result1 = json_decode( '[{"ID":"1080","cat":"6","vote":"2"},{"ID":"4415","cat":"1","vote":"5"},{"ID":"4415","cat":"5","vote":"-5"},{"ID":"4763","cat":"1","vote":"5"},{"ID":"4926","cat":"1","vote":"5"},{"ID":"4933","cat":"1","vote":"4"},{"ID":"4935","cat":"1","vote":"5"},{"ID":"4938","cat":"1","vote":"5"},{"ID":"4939","cat":"1","vote":"5"},{"ID":"4947","cat":"1","vote":"4"},{"ID":"4952","cat":"1","vote":"3"},{"ID":"4953","cat":"1","vote":"5"},{"ID":"4962","cat":"1","vote":"4"},{"ID":"8558","cat":"1","vote":"3"},{"ID":"14888","cat":"4","vote":"5"},{"ID":"16879","cat":"4","vote":"-2"},{"ID":"16879","cat":"6","vote":"3"},{"ID":"100003","cat":"1","vote":"0"},{"ID":"100007","cat":"1","vote":"4"},{"ID":"100013","cat":"1","vote":"0"},{"ID":"100017","cat":"6","vote":"4"},{"ID":"100017","cat":"4","vote":"-4"},{"ID":"100019","cat":"1","vote":"1"},{"ID":"100027","cat":"1","vote":"3"},{"ID":"100031","cat":"1","vote":"2"},{"ID":"106427","cat":"5","vote":"-5"},{"ID":"217955","cat":"4","vote":"-1"},{"ID":"217955","cat":"4","vote":"-1"},{"ID":"240000","cat":"1","vote":"2"},{"ID":"240010","cat":"1","vote":"4"},{"ID":"240021","cat":"1","vote":"3"},{"ID":"240079","cat":"1","vote":"4"},{"ID":"240079","cat":"7","vote":"4"},{"ID":"240079","cat":"6","vote":"2"},{"ID":"240210","cat":"1","vote":"3"},{"ID":"240227","cat":"1","vote":"3"},{"ID":"240249","cat":"1","vote":"5"},{"ID":"240273","cat":"1","vote":"5"},{"ID":"240333","cat":"1","vote":"2"},{"ID":"240335","cat":"1","vote":"4"},{"ID":"300024","cat":"3","vote":"4"},{"ID":"300024","cat":"1","vote":"5"},{"ID":"310001","cat":"1","vote":"3"},{"ID":"310025","cat":"1","vote":"3"},{"ID":"310034","cat":"1","vote":"4"},{"ID":"310042","cat":"1","vote":"2"},{"ID":"310111","cat":"1","vote":"5"},{"ID":"310191","cat":"1","vote":"3"},{"ID":"310219","cat":"1","vote":"5"},{"ID":"310236","cat":"1","vote":"1"},{"ID":"310322","cat":"1","vote":"3"},{"ID":"310356","cat":"1","vote":"2"},{"ID":"310360","cat":"1","vote":"3"},{"ID":"310360","cat":"4","vote":"-5"},{"ID":"310394","cat":"1","vote":"1"},{"ID":"310394","cat":"3","vote":"2"},{"ID":"310405","cat":"1","vote":"5"},{"ID":"310411","cat":"1","vote":"4"}]', true );


foreach ( $result as $arr ) 
{ 
    $v=[];
    foreach ( $result1 as $arr1 )
    {
        if ($arr1['ID']==$arr['ID']) $v[]=$arr1;
    }
    TLVotesStatUpdateBAD($arr['ID'], $v);
}

function TLVotesStatUpdateBAD(int $id, ?array $v=null) : float
{
 static $k;
 if (!isset($k))   $k=json_decode('{"4":{"tp":"20","st":"sum"},"3":{"tp":"30","st":"caa"},"2":{"tp":"60","st":"sum"},"1":{"tp":"50","st":"unique"},"5":{"tp":"50","st":"caa"},"6":{"tp":"20","st":"caa"},"7":{"tp":"60","st":"caa"},"8":{"tp":"60","st":"caa"},"255":{"tp":"0","st":"correction"}}',TRUE);
 



 $pav=50; 
 $s=0.0;	
 $corrections=0;	
 $av=[]; 
 $avc=[];






 foreach ( $v as $arr )
 {
  if ($k[$arr['cat']]['st']=='unique') $av[$arr['cat']]=$arr['vote'];
  elseif ($k[$arr['cat']]['st']=='correction') 
  {
    $av[$arr['cat']]=$arr['vote']; 
    $corrections++;
  }
  else
  {
   if ($arr['vote']<0) $arr['vote']=$arr['vote']/2;

   $av[$arr['cat']]??=0; 
   $avc[$arr['cat']]??=0;

   $av[$arr['cat']]+=$arr['vote'];
   $avc[$arr['cat']]++;
  }
 }



 if (($c=count($av)))
 {
  $c-=$corrections;
  foreach ($av as $key => $value)
  {
   if ($k[$key]['st']=='correction') $s+=$value;
   else
   {

    if ($k[$key]['st']=='caa') $value=$value/$avc[$key];
    
    $s+=$value/5 * $k[$key]['tp'] * (1 + 50/$k[$key]['tp'] * $pav/(100*$c));


echo "$value/5 * {$k[$key]['tp']} * (1 + 50/{$k[$key]['tp']} * $pav/(100*$c))\n";
echo $value/5 * $k[$key]['tp'] * (1 + 50/$k[$key]['tp'] * $pav/(100*$c));
echo "\n";
   }
  }
 }

//echo("$id $c\n");
echo("$id $s\n\n");

 return $s;
}

Resulted in this output:

WRONG RESULTS WHEN opcache.jit=1255
/usr/bin/php -d opcache.enable_cli=1 -d opcache.jit=1255 0.test.php
49 0

2/5 * 20 * (1 + 50/20 * 50/(100*1))
18
1080 18

5/5 * 50 * (1 + 50/50 * 50/(100*2))
62.5
-2.5/5 * 50 * (1 + 50/50 * 50/(100*2))
-31.25
4415 31.25

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4763 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4926 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4933 60

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4935 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4938 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4939 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4947 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
4952 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4953 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4962 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
8558 45

5/5 * 20 * (1 + 50/20 * 50/(100*1))
45
14888 45

-1/5 * 20 * (1 + 50/20 * 50/(100*2))
-6.5
3/5 * 20 * (1 + 50/20 * 50/(100*2))
19.5
16879 13

0/5 * 50 * (1 + 50/50 * 50/(100*1))
0
100003 0

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
100007 60

0/5 * 50 * (1 + 50/50 * 50/(100*1))
0
100013 0

4/5 * 20 * (1 + 50/20 * 50/(100*2))
26
-2/5 * 20 * (1 + 50/20 * 50/(100*2))
-13
100017 13

1/5 * 50 * (1 + 50/50 * 50/(100*1))
15
100019 15

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
100027 45

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
100031 30

-2.5/5 * 50 * (1 + 50/50 * 50/(100*1))
-37.5
106427 -37.5

-1/5 * 20 * (1 + 50/20 * 50/(100*1))
-9
217955 -9

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
240000 30

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
240010 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240021 45

4/5 * 50 * (1 + 50/50 * 50/(100*3))
46.666666666667
4/5 * 60 * (1 + 50/60 * 50/(100*3))
54.666666666667
2/5 * 20 * (1 + 50/20 * 50/(100*3))
11.333333333333
240079 112.66666666667

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240210 45

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240227 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
3.7054923438093E-322
240249 3.7054923438093E-322

5/5 * 50 * (1 + 50/50 * 50/(100*1))
3.7054923438093E-322
240273 3.7054923438093E-322

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
240333 30

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
240335 60

4/5 * 30 * (1 + 50/30 * 50/(100*2))
34
5/5 * 50 * (1 + 50/50 * 50/(100*2))
62.5
300024 96.5

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310001 45

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310025 45

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
310034 60

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
310042 30

5/5 * 50 * (1 + 50/50 * 50/(100*1))
3.7054923438093E-322
310111 3.7054923438093E-322

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310191 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
3.7054923438093E-322
310219 3.7054923438093E-322

1/5 * 50 * (1 + 50/50 * 50/(100*1))
15
310236 15

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310322 45

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
310356 30

3/5 * 50 * (1 + 50/50 * 50/(100*2))
37.5
-2.5/5 * 20 * (1 + 50/20 * 50/(100*2))
-16.25
310360 21.25

1/5 * 50 * (1 + 50/50 * 50/(100*2))
12.5
2/5 * 30 * (1 + 50/30 * 50/(100*2))
17
310394 29.5

5/5 * 50 * (1 + 50/50 * 50/(100*1))
3.7054923438093E-322
310405 3.7054923438093E-322

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
310411 60

But I expected this output instead:

RIGHT RESULTS  WHEN opcache.jit=1251
/usr/bin/php -d opcache.enable_cli=1 -d opcache.jit=1251 0.test.php'
49 0

2/5 * 20 * (1 + 50/20 * 50/(100*1))
18
1080 18

5/5 * 50 * (1 + 50/50 * 50/(100*2))
62.5
-2.5/5 * 50 * (1 + 50/50 * 50/(100*2))
-31.25
4415 31.25

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4763 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4926 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4933 60

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4935 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4938 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4939 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4947 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
4952 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
4953 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
4962 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
8558 45

5/5 * 20 * (1 + 50/20 * 50/(100*1))
45
14888 45

-1/5 * 20 * (1 + 50/20 * 50/(100*2))
-6.5
3/5 * 20 * (1 + 50/20 * 50/(100*2))
19.5
16879 13

0/5 * 50 * (1 + 50/50 * 50/(100*1))
0
100003 0

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
100007 60

0/5 * 50 * (1 + 50/50 * 50/(100*1))
0
100013 0

4/5 * 20 * (1 + 50/20 * 50/(100*2))
26
-2/5 * 20 * (1 + 50/20 * 50/(100*2))
-13
100017 13

1/5 * 50 * (1 + 50/50 * 50/(100*1))
15
100019 15

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
100027 45

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
100031 30

-2.5/5 * 50 * (1 + 50/50 * 50/(100*1))
-37.5
106427 -37.5

-1/5 * 20 * (1 + 50/20 * 50/(100*1))
-9
217955 -9

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
240000 30

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
240010 60

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240021 45

4/5 * 50 * (1 + 50/50 * 50/(100*3))
46.666666666667
4/5 * 60 * (1 + 50/60 * 50/(100*3))
54.666666666667
2/5 * 20 * (1 + 50/20 * 50/(100*3))
11.333333333333
240079 112.66666666667

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240210 45

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
240227 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
240249 75

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
240273 75

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
240333 30

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
240335 60

4/5 * 30 * (1 + 50/30 * 50/(100*2))
34
5/5 * 50 * (1 + 50/50 * 50/(100*2))
62.5
300024 96.5

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310001 45

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310025 45

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
310034 60

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
310042 30

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
310111 75

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310191 45

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
310219 75

1/5 * 50 * (1 + 50/50 * 50/(100*1))
15
310236 15

3/5 * 50 * (1 + 50/50 * 50/(100*1))
45
310322 45

2/5 * 50 * (1 + 50/50 * 50/(100*1))
30
310356 30

3/5 * 50 * (1 + 50/50 * 50/(100*2))
37.5
-2.5/5 * 20 * (1 + 50/20 * 50/(100*2))
-16.25
310360 21.25

1/5 * 50 * (1 + 50/50 * 50/(100*2))
12.5
2/5 * 30 * (1 + 50/30 * 50/(100*2))
17
310394 29.5

5/5 * 50 * (1 + 50/50 * 50/(100*1))
75
310405 75

4/5 * 50 * (1 + 50/50 * 50/(100*1))
60
310411 60

PHP Version

PHP 8.4.16 (cli) (built: Dec 16 2025 16:03:34) (NTS gcc x86_64)
Copyright (c) The PHP Group
Built by Fedora Project
Zend Engine v4.4.16, Copyright (c) Zend Technologies
    with Zend OPcache v8.4.16, Copyright (c), by Zend Technologies

Operating System

Fedora 42 Linux 6.14.2-300.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Apr 10 21:50:55 UTC 2025 x86_64 GNU/Linux

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