Update GCC flags to suppress incompatible pointer type warnings

Author: Jeckerson

src/Compiler.php

@@ -1315,9 +1315,9 @@ public function getGccFlags(bool $development = false): string
             if (false === $development) {
                 $gccVersion = $this->getGccVersion();
                 if (version_compare($gccVersion, '4.6.0', '>=')) {
-                    $gccFlags = '-O2 -fvisibility=hidden -Wparentheses -flto -DZEPHIR_RELEASE=1';
+                    $gccFlags = '-O2 -Wno-incompatible-pointer-types -fvisibility=hidden -Wparentheses -flto -DZEPHIR_RELEASE=1';
                 } else {
-                    $gccFlags = '-O2 -fvisibility=hidden -Wparentheses -DZEPHIR_RELEASE=1';
+                    $gccFlags = '-O2 -Wno-incompatible-pointer-types -fvisibility=hidden -Wparentheses -DZEPHIR_RELEASE=1';
                 }
             } else {
                 $gccFlags = '-O0 -g3';