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<?php //No error/warning, jay! spl_autoload_register(function ($class) { class Foo{}; var_dump(debug_backtrace([DEBUG_BACKTRACE_IGNORE_ARGS], 2)); }, true, true); $bar = new Foo();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: debug_backtrace(): Argument #1 ($options) must be of type int, array given in /in/Og2uR:6 Stack trace: #0 /in/Og2uR(6): debug_backtrace(Array, 2) #1 /in/Og2uR(9): {closure}('Foo') #2 {main} thrown in /in/Og2uR on line 6
Process exited with code 255.

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