Wrong line & file on error trace

Description

definitions.php

<?php

class ThrowableParam {
	
   public function __construct() {
		
       // this will be line #7 for definitions.php:
      throw new Exception(sprintf('I expect to indicate file %s on line %s but it throws', basename(__FILE__), __LINE__));
		
   }
	
}

trait TraitInASeparateFile {

    // but this will be line #16 for definitions.php:		
    public function execute(ThrowableParam $param=new ThrowableParam): void {}
	
}

?>

main.php

<?php

include './definitions.php';

class Foo  {

    use TraitInASeparateFile;

}

$bar=new Foo;
$bar->execute(); // line #11 for main.php

// So, there is no line #16 for main.php

?>

RESULT :

Fatal error: Uncaught Exception: I expect to indicate file definitions.php on line 7 but it throws in ./main.php:16

  Stack trace:
  #0 ./definitions.php(7): constant expression
  #1 ./definitions.php(16): ThrowableParam->__construct()
  #2 ./main/php(11): Foo->execute()
  #3 {main}
  thrown in /var/www/html/nbcloud/_tests/bugPHP.php on line 16

BUT EXPECT :

Fatal error: Uncaught Exception: I expect to indicate file definitions.php on line 7 but it throws in ./definitions.php:7

  Stack trace:
  #0 ./definitions.php(7): constant expression
  #1 ./definitions.php(16): ThrowableParam->__construct()
  #2 ./main/php(11): Foo->execute()
  #3 {main}
  thrown in /var/www/html/nbcloud/_tests/bugPHP.php on line 16

PHP Version

8.4.5

Operating System

Debian 11

まず、PHP 8.4.5 で definitions.php と main.php を使って報告された事象を再現し、throw された場所とスタックトレースを比較します。コンストラクターの定数式によるデフォルト引数のランタイムでの処理を調査し、報告された throw の場所が main.php:16 ではなく definitions.php:7 であることを確認します。