diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index 0e98d9bdd53cd..0efccdb103002 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -110,6 +110,10 @@ public function setCommandLoader(CommandLoaderInterface $commandLoader)
public function getSignalRegistry(): SignalRegistry
{
+ if (!$this->signalRegistry) {
+ throw new RuntimeException('Signals are not supported. Make sure that the `pcntl` extension is installed and that "pcntl_*" functions are not disabled by your php.ini\'s "disable_functions" directive.');
+ }
+
return $this->signalRegistry;
}
@@ -282,7 +286,7 @@ public function doRun(InputInterface $input, OutputInterface $output)
$command = $this->find($alternative);
}
- if ($this->dispatcher) {
+ if ($this->dispatcher && $this->signalRegistry) {
foreach ($this->signalsToDispatchEvent as $signal) {
$event = new ConsoleSignalEvent($command, $input, $output, $signal);
@@ -954,7 +958,7 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
}
if ($command instanceof SignalableCommandInterface) {
- if (!$this->signalsToDispatchEvent) {
+ if (!$this->signalRegistry) {
throw new RuntimeException('Unable to subscribe to signal events. Make sure that the `pcntl` extension is installed and that "pcntl_*" functions are not disabled by your php.ini\'s "disable_functions" directive.');
}
foreach ($command->getSubscribedSignals() as $signal) {
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