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--TEST--
Bug #39780 (PNG image with CRC/data error raises a fatal error)
--SKIPIF--
<?php
if (!extension_loaded('gd')) die("skip gd extension not available\n");
if (!GD_BUNDLED) die("skip requires bundled GD library\n");
?>
--FILE--
<?php
$im = imagecreatefrompng(__DIR__ . '/bug39780.png');
var_dump($im);
?>
--EXPECTF--
Warning: imagecreatefrompng(): gd-png: fatal libpng error: Read Error: truncated data in %s on line %d
Warning: imagecreatefrompng(): gd-png error: setjmp returns error condition in %s on line %d
Warning: imagecreatefrompng(): '%s' is not a valid PNG file in %s on line %d
bool(false)
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