[Bug 1674892] Re: zend_print_flat_zval_r doesn't consider reference
** Description changed:
+ [Impact]
+
+ * Users hit an error with PHP7.0 when zend_print_flat_zval_r doesn't
+ consider a reference.
+
+ The following error may be triggered：
+ PHP Notice: Array to string conversion;
+ Catchable fatal error: Object could not be converted to string.
+
+ [Test Case]
+
+ * From the upstream bug:
+
+ $a = array('a');
+ class b{};
+ $b = new b;
+ $test[] =& $a;
+ $test[] =& $b;
+ test($test);
+ function test() {
+ debug_print_backtrace();
+ }
+
+ Expected result:
+
+ #0 test(Array ([0] => Array ([0] => a),[1] => b Object ())) called at
[/Users/playcrab/Documents/code/php/test/test7.php:7]
+
+ Actual result:
+ --
+ #0 test(Array ([0] => PHP Notice: Array to string conversion in
/Users/playcrab/Documents/code/php/test/test7.php on line 9
+ PHP Stack trace:
+ PHP 1. {main}() /Users/playcrab/Documents/code/php/test/test7.php:0
+ PHP 2. test() /Users/playcrab/Documents/code/php/test/test7.php:7
+ PHP 3. debug_print_backtrace()
/Users/playcrab/Documents/code/php/test/test7.php:9
+ PHP Catchable fatal error: Object of class b could not be converted to
string in /Users/playcrab/Documents/code/php/test/test7.php on line 9
+ PHP Stack trace:
+ PHP 1. {main}() /Users/playcrab/Documents/code/php/test/test7.php:0
+ PHP 2. test() /Users/playcrab/Documents/code/php/test/test7.php:7
+ PHP 3. debug_print_backtrace()
/Users/playcrab/Documents/code/php/test/test7.php:9
+
+ Notice: Array to string conversion in
+ /Users/playcrab/Documents/code/php/test/test7.php on line 9
+
+ Call Stack:
+ 0.0068 353088 1. {main}()
/Users/playcrab/Documents/code/php/test/test7.php:0
+ 0.0080 353928 2. test()
/Users/playcrab/Documents/code/php/test/test7.php:7
+ 0.0080 353928 3. debug_print_backtrace()
/Users/playcrab/Documents/code/php/test/test7.php:9
+
+ Array,[1] =>
+ Catchable fatal error: Object of class b could not be converted to string in
/Users/playcrab/Documents/code/php/test/test7.php on line 9
+
+ Call Stack:
+ 0.0068 353088 1. {main}()
/Users/playcrab/Documents/code/php/test/test7.php:0
+ 0.0080 353928 2. test()
/Users/playcrab/Documents/code/php/test/test7.php:7
+ 0.0080 353928 3. debug_print_backtrace()
/Users/playcrab/Documents/code/php/test/test7.php:9
+
+
+ [Regression Potential]
+
+ * I believe the regression potential is low to zero for this fix (via
+ 7.0.18 upstream). The reason is that the code as-is in 16.04 does not
+ work and leads to backtraces. The fix introduce upstream resolves the
+ issue.
+
+ ---
+
https://bugs.php.net/bug.php?id=73916
We've hit this bug in 7.0.15, the current/latest version for Xenial.
It was fixed in 7.0.16 by php.net, Feb 16 2017. It would be nice if
Xenials packages would be updated to reflect this fix.
Patch: http://git.php.net/?p=php-
src.git;a=blobdiff;f=Zend/zend.c;h=2a47e9244ba787a2ad35e9220171b04d1a5de634;hp=3f3ca75e382b1dec98fd138307d812f36f02251e;hb=04379bcb1df25a9f9cc1d440f5c12105b9fbaf97;hpb=bd75f9e61375c7632bb55b0d49b470ecd94e8ec7
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https://bugs.launchpad.net/bugs/1674892
Title:
zend_print_flat_zval_r doesn't consider reference
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