Get rid of legacy 7.3 logic

src/Psalm/Internal/Analyzer/ProjectAnalyzer.php

@@ -72,7 +72,6 @@ use function file_exists;
 use function fwrite;
 use function implode;
 use function in_array;
-use function ini_get;
 use function is_dir;
 use function is_file;
 use function microtime;
@@ -86,11 +85,8 @@ use function strpos;
 use function strtolower;
 use function substr;
 use function usort;
-use function version_compare;
 
 use const PHP_EOL;
-use const PHP_OS;
-use const PHP_VERSION;
 use const PSALM_VERSION;
 use const STDERR;
 
@@ -391,21 +387,13 @@ class ProjectAnalyzer
         $this->file_reference_provider->loadReferenceCache();
         $this->codebase->enterServerMode();
 
-        if (ini_get('pcre.jit') === '1'
+        $cpu_count = self::getCpuCount();
-            && PHP_OS === 'Darwin'
-            && version_compare(PHP_VERSION, '7.3.0') >= 0
-            && version_compare(PHP_VERSION, '7.4.0') < 0
-        ) {
-            // do nothing
-        } else {
-            $cpu_count = self::getCpuCount();
 
-            // let's not go crazy
+        // let's not go crazy
-            $usable_cpus = $cpu_count - 2;
+        $usable_cpus = $cpu_count - 2;
 
-            if ($usable_cpus > 1) {
+        if ($usable_cpus > 1) {
-                $this->threads = $usable_cpus;
+            $this->threads = $usable_cpus;
-            }
         }
 
         $server->logInfo("Initializing: Initialize Plugins...");
@@ -1356,15 +1344,6 @@ class ProjectAnalyzer
             return 1;
         }
 
-        // PHP 7.3 with JIT on OSX is screwed for multi-threads
-        if (ini_get('pcre.jit') === '1'
-            && PHP_OS === 'Darwin'
-            && version_compare(PHP_VERSION, '7.3.0') >= 0
-            && version_compare(PHP_VERSION, '7.4.0') < 0
-        ) {
-            return 1;
-        }
-
         if (!extension_loaded('pcntl')) {
             // Psalm requires pcntl for multi-threads support
             return 1;

src/Psalm/Internal/Analyzer/Statements/Block/TryAnalyzer.php

@@ -25,9 +25,6 @@ use function array_merge;
 use function in_array;
 use function is_string;
 use function strtolower;
-use function version_compare;
-
-use const PHP_VERSION;
 
 /**
  * @internal
@@ -267,8 +264,7 @@ class TryAnalyzer
                             $fq_catch_class,
                             false,
                             false,
-                            version_compare(PHP_VERSION, '7.0.0dev', '>=')
+                            strtolower($fq_catch_class) !== 'throwable'
-                                && strtolower($fq_catch_class) !== 'throwable'
                                 && $codebase->interfaceExists($fq_catch_class)
                                 && !$codebase->interfaceExtends($fq_catch_class, 'Throwable')
                                     ? ['Throwable' => new TNamedObject('Throwable')]

src/Psalm/Internal/Cli/Psalm.php

@@ -13,7 +13,6 @@ use Psalm\Internal\CliUtils;
 use Psalm\Internal\Codebase\ReferenceMapGenerator;
 use Psalm\Internal\Composer;
 use Psalm\Internal\ErrorHandler;
-use Psalm\Internal\Fork\Pool;
 use Psalm\Internal\Fork\PsalmRestarter;
 use Psalm\Internal\IncludeCollector;
 use Psalm\Internal\Provider\ClassLikeStorageCacheProvider;
@@ -73,15 +72,12 @@ use function str_replace;
 use function strlen;
 use function strpos;
 use function substr;
-use function version_compare;
 
 use const DIRECTORY_SEPARATOR;
 use const JSON_THROW_ON_ERROR;
 use const LC_CTYPE;
 use const PHP_EOL;
-use const PHP_OS;
 use const PHP_URL_SCHEME;
-use const PHP_VERSION;
 use const STDERR;
 
 // phpcs:disable PSR1.Files.SideEffects
@@ -269,8 +265,6 @@ final class Psalm
 
         $progress = self::initProgress($options, $config);
 
-        self::emitMacPcreWarning($options, $threads);
-
         self::restart($options, $threads, $progress);
 
         if (isset($options['debug-emitted-issues'])) {
@@ -865,24 +859,6 @@ final class Psalm
         return $current_dir;
     }
 
-    private static function emitMacPcreWarning(array $options, int $threads): void
-    {
-        if (!isset($options['threads'])
-            && !isset($options['debug'])
-            && $threads === 1
-            && ini_get('pcre.jit') === '1'
-            && PHP_OS === 'Darwin'
-            && version_compare(PHP_VERSION, '7.3.0') >= 0
-            && version_compare(PHP_VERSION, '7.4.0') < 0
-        ) {
-            echo(
-                'If you want to run Psalm as a language server, or run Psalm with' . PHP_EOL
-                    . 'multiple processes (--threads=4), beware:' . PHP_EOL
-                    . Pool::MAC_PCRE_MESSAGE . PHP_EOL . PHP_EOL
-            );
-        }
-    }
-
     private static function restart(array $options, int $threads, Progress $progress): void
     {
         $ini_handler = new PsalmRestarter('PSALM');

src/Psalm/Internal/Fork/Pool.php

@@ -48,11 +48,8 @@ use function strpos;
 use function substr;
 use function unserialize;
 use function usleep;
-use function version_compare;
 
 use const PHP_EOL;
-use const PHP_OS;
-use const PHP_VERSION;
 use const SIGALRM;
 use const SIGTERM;
 use const STREAM_IPPROTO_IP;
@@ -88,12 +85,6 @@ class Pool
     /** @var ?Closure(mixed): void */
     private ?Closure $task_done_closure = null;
 
-    public const MAC_PCRE_MESSAGE = 'Mac users: pcre.jit is set to 1 in your PHP config.' . PHP_EOL
-        . 'The pcre jit is known to cause segfaults in PHP 7.3 on Macs, and Psalm' . PHP_EOL
-        . 'will not execute in threaded mode to avoid indecipherable errors.' . PHP_EOL
-        . 'Consider adding pcre.jit=0 to your PHP config, or upgrade to PHP 7.4.' . PHP_EOL
-        . 'Relevant info: https://bugs.php.net/bug.php?id=77260';
-
     /**
      * @param array<int, array<int, mixed>> $process_task_data_iterator
      * An array of task data items to be divided up among the
@@ -141,16 +132,6 @@ class Pool
             exit(1);
         }
 
-        if (ini_get('pcre.jit') === '1'
-            && PHP_OS === 'Darwin'
-            && version_compare(PHP_VERSION, '7.3.0') >= 0
-            && version_compare(PHP_VERSION, '7.4.0') < 0
-        ) {
-            die(
-                self::MAC_PCRE_MESSAGE . PHP_EOL
-            );
-        }
-
         // We'll keep track of if this is the parent process
         // so that we can tell who will be doing the waiting
         $is_parent = false;