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List:       php-doc-bugs
Subject:    [DOC-BUGS] [PHP-BUG] Doc #75466 [NEW]: Undocumented Backward Compatibility Break from 7.0 to 7.1
From:       "php at bouchery dot com"<php-bugs () lists ! php ! net>
Date:       2017-10-30 17:07:27
Message-ID: bug-75466 () bugs ! php ! net
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From:             php at bouchery dot com
Operating system: Irrelevant
PHP version:      Irrelevant
Package:          Documentation problem
Bug Type:         Documentation Problem
Bug description:Undocumented Backward Compatibility Break from 7.0 to 7.1

Description:
------------
---
From manual page: http://www.php.net/migration71.incompatible
---
When "return" without value in a function using return type into PHP
7.0, this will not generate fatale if "return" is not executed.

When migrating to PHP 7.1, it will generate a compilation error "Fatal
error: A function with return type must return a value" even if "return"
is not executed.

Test script:
---------------
<?php
function foo(): int {
   if (false) { 
      return;
   }
}
?>

Replace the "false" condition by what you want, never or rarely called.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=75466&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=75466&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=75466&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=75466&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=75466&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=75466&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=75466&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=75466&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=75466&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=75466&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=75466&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=75466&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=75466&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=75466&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75466&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=75466&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=75466&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=75466&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=75466&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=75466&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=75466&r=mysqlcfg


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