From c3568262cd98afc39d864ab72c0bcc421fd19050 Mon Sep 17 00:00:00 2001
From: Tobias Werth <werth@cs.fau.de>
Date: Wed, 13 Nov 2024 21:27:18 +0100
Subject: [PATCH] Fix compiler error reporting for empty source file sets.

Empty source file sets can happen with filtered file extensions, when
you accept a submission and later trim down the list of filtered file
extensions to a smaller set.

We also saw this during shadowing, but probably want to classify that as
an import error.
---
 webapp/src/Controller/API/JudgehostController.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/webapp/src/Controller/API/JudgehostController.php b/webapp/src/Controller/API/JudgehostController.php
index 8cfa36c80a..8eb6239515 100644
--- a/webapp/src/Controller/API/JudgehostController.php
+++ b/webapp/src/Controller/API/JudgehostController.php
@@ -394,9 +394,12 @@ public function updateJudgingAction(
                     if ($judging->getOutputCompile() === null) {
                         $judging
                             ->setOutputCompile($output_compile)
-                            ->setCompileMetadata(base64_decode($compileMetadata))
                             ->setResult(Judging::RESULT_COMPILER_ERROR)
                             ->setEndtime(Utils::now());
+
+                        if ($compileMetadata !== null) {
+                            $judging->setCompileMetadata(base64_decode($compileMetadata));
+                        }
                         $this->em->flush();
 
                         if ($judging->getValid()) {