synchronized block start should really flush fields

2026-09-18 09:34:34 +07:00 · 2012-04-18 12:07:42 +02:00
parent a58fdb1991
commit 8a6f6f7a9d
6 changed files with 47 additions and 4 deletions
@@ -0,0 +1,20 @@
+public class Bar {
+  private Object field;
+  private final Object lock = new Object();
+
+  public void main() {
+    synchronized (lock) {
+      if (field != null) {
+        return;
+      }
+    }
+    synchronized (lock) {
+      if (field != null) {
+        return;
+      }
+      if (<warning descr="Condition 'field == null' is always 'true'">field == null</warning>) {
+        System.out.println();
+      }
+    }
+  }
+}