symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
+1-1Lines changed: 1 addition & 1 deletion b/‎src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
+5-7Lines changed: 5 additions & 7 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
+5-7Lines changed: 5 additions & 7 deletions
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/config/framework.yml
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/config/framework.yml
+3Lines changed: 3 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/config/framework.yml
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/config/framework.yml
+3Lines changed: 3 additions & 0 deletions
diff --git a/‎src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/config/framework.yml
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/config/framework.yml
+3Lines changed: 3 additions & 0 deletions b/‎src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/config/framework.yml
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/config/framework.yml
+3Lines changed: 3 additions & 0 deletions
@@ -51,7 +51,7 @@ public function warmUp(string $cacheDir, ?string $buildDir = null): array
 
     public function isOptional(): bool
     {
-        return true;
+        return false;
     }
 
     public static function getSubscribedServices(): array
 
@@ -69,7 +69,7 @@ public function getRouteCollection(): RouteCollection
             $this->collection->addResource(new ContainerParametersResource($this->collectedParameters));
 
             try {
-                $containerFile = ($this->paramFetcher)('kernel.cache_dir').'/'.($this->paramFetcher)('kernel.container_class').'.php';
+                $containerFile = ($this->paramFetcher)('kernel.build_dir').'/'.($this->paramFetcher)('kernel.container_class').'.php';
                 if (file_exists($containerFile)) {
                     $this->collection->addResource(new FileResource($containerFile));
                 } else {
@@ -84,14 +84,12 @@ public function getRouteCollection(): RouteCollection
 
     public function warmUp(string $cacheDir, ?string $buildDir = null): array
     {
-        if (!$buildDir) {
-            return [];
+        if (null === $currentDir = $this->getOption('cache_dir')) {
+            return []; // skip warmUp when router doesn't use cache
         }
 
-        $currentDir = $this->getOption('cache_dir');
-
-        // force cache generation in build_dir
-        $this->setOption('cache_dir', $buildDir);
+        // force cache generation
+        $this->setOption('cache_dir', $buildDir ?? $cacheDir);
         $this->getMatcher();
         $this->getGenerator();
 
 
@@ -21,3 +21,6 @@ framework:
 
 services:
     logger: { class: Psr\Log\NullLogger }
+
+parameters:
+    router.cache_dir: null
@@ -22,3 +22,6 @@ framework:
 
 services:
     logger: { class: Psr\Log\NullLogger }
+
+parameters:
+    router.cache_dir: null
Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ public function warmUp(string $cacheDir, ?string $buildDir = null): array`
`51`	`51`
`52`	`52`	`public function isOptional(): bool`
`53`	`53`	`{`
`54`		`- return true;`
	`54`	`+ return false;`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`public static function getSubscribedServices(): array`