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<?php function blah(float $x) { var_dump($x); } blah('123abc');
Output for git.master, git.master_jit
Fatal error: Uncaught TypeError: blah(): Argument #1 ($x) must be of type float, string given, called in /in/1cQ9l on line 7 and defined in /in/1cQ9l:3 Stack trace: #0 /in/1cQ9l(7): blah('123abc') #1 {main} thrown in /in/1cQ9l on line 3
Process exited with code 255.

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