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<title>[45014] trunk/src: Bootstrap/Load: Always run the fatal error handler at shutdown, but don't display the PHP error template once headers are sent.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/45014">45014</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/45014","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-03-26 20:29:52 +0000 (Tue, 26 Mar 2019)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Bootstrap/Load: Always run the fatal error handler at shutdown, but don't display the PHP error template once headers are sent.
If a fatal error occurs midway through a page load, or in a REST API request, it still needs to be handled internally for the recovery mode, but the custom message may conflict with already rendered output, e.g. by displaying HTML markup in an XML or JSON request.
Props spacedmonkey, flixos90, TimothyBlynJacobs.
Fixes <a href="https://core.trac.wordpress.org/ticket/45989">#45989</a>. See <a href="https://core.trac.wordpress.org/ticket/44458">#44458</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpfatalerrorhandlerphp">trunk/src/wp-includes/class-wp-fatal-error-handler.php</a></li>
<li><a href="#trunksrcwpsettingsphp">trunk/src/wp-settings.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesclasswpfatalerrorhandlerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/class-wp-fatal-error-handler.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-fatal-error-handler.php 2019-03-26 00:45:57 UTC (rev 45013)
+++ trunk/src/wp-includes/class-wp-fatal-error-handler.php 2019-03-26 20:29:52 UTC (rev 45014)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -26,11 +26,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 5.2.0
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> public function handle() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- // Bail if WordPress executed successfully.
- if ( defined( 'WP_EXECUTION_SUCCEEDED' ) && WP_EXECUTION_SUCCEEDED ) {
- return;
- }
-
</del><span class="cx" style="display: block; padding: 0 10px"> try {
</span><span class="cx" style="display: block; padding: 0 10px"> // Bail if no error found.
</span><span class="cx" style="display: block; padding: 0 10px"> $error = $this->detect_error();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -42,8 +37,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> wp_recovery_mode()->handle_error( $error );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- // Display the PHP error template.
- $this->display_error_template();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Display the PHP error template if headers not sent.
+ if ( ! headers_sent() ) {
+ $this->display_error_template();
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> } catch ( Exception $e ) {
</span><span class="cx" style="display: block; padding: 0 10px"> // Catch exceptions and remain silent.
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="trunksrcwpsettingsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-settings.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-settings.php 2019-03-26 00:45:57 UTC (rev 45013)
+++ trunk/src/wp-settings.php 2019-03-26 20:29:52 UTC (rev 45014)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -544,12 +544,3 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 3.0.0
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> do_action( 'wp_loaded' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
-/*
- * Store the fact that we could successfully execute the entire WordPress
- * lifecycle. This is used to skip the premature shutdown handler, as it cannot
- * be unregistered.
- */
-if ( ! defined( 'WP_EXECUTION_SUCCEEDED' ) ) {
- define( 'WP_EXECUTION_SUCCEEDED', true );
-}
</del></span></pre>
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