1--TEST-- 2Bug #80972: Memory exhaustion on invalid string offset 3--FILE-- 4<?php 5 6function exceptions_error_handler($severity, $message, $filename, $lineno) { 7 if (error_reporting() & $severity) { 8 throw new ErrorException($message, 0, $severity, $filename, $lineno); 9 } 10} 11set_error_handler('exceptions_error_handler'); 12 13$float = 10e120; 14$string_float = (string) $float; 15 16$string = 'Here is some text for good measure'; 17 18try { 19 echo 'Float casted to string compile', \PHP_EOL; 20 $string[(string) 10e120] = 'E'; 21 var_dump($string); 22} catch (\Throwable $e) { 23 echo $e->getMessage(), \PHP_EOL; 24} 25 26/* This same bug also permits to modify the first byte of a string even if 27 * the offset is invalid */ 28try { 29 /* This must not affect the string value */ 30 $string["wrong"] = "f"; 31} catch (\Throwable $e) { 32 echo $e->getMessage() . \PHP_EOL; 33} 34var_dump($string); 35 36?> 37--EXPECT-- 38Float casted to string compile 39Illegal string offset '1.0E+121' 40Illegal string offset 'wrong' 41string(34) "Here is some text for good measure" 42
