diff --git a/src/lib.rs b/src/lib.rs
index ef83620..b8251f8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -20,7 +20,15 @@ static LOG_LEVEL: RwLock<Level> = RwLock::new(Level::Debug);
 pub struct QADAPT;
 
 pub fn set_panic(b: bool) {
-    *DO_PANIC.write() = b;
+    let mut val = DO_PANIC.write();
+    if *val == b {
+        let level = LOG_LEVEL.read();
+        if log_enabled!(*level) {
+            log!(*level, "Panic flag was already {}, potential data race", b)
+        }
+    }
+
+    *val = b;
 }
 
 pub fn set_log_level(level: Level) {
diff --git a/tests/simple.rs b/tests/simple.rs
index 86a225a..bc09bb1 100644
--- a/tests/simple.rs
+++ b/tests/simple.rs
@@ -27,4 +27,63 @@ fn test_allocate() {
     set_panic(true);
     let _x = Box::new(12);
     set_panic(false);
+}
+
+fn unit_result(b: bool) -> Result<(), ()> {
+    if b {
+        Ok(())
+    } else {
+        Err(())
+    }
+}
+
+#[test]
+fn test_unit_result() {
+    set_panic(true);
+    #[allow(unused)]
+    { black_box(unit_result(true)); }
+    black_box(unit_result(true)).unwrap();
+    #[allow(unused)]
+    { black_box(unit_result(false)); }
+    black_box(unit_result(false)).unwrap_err();
+    set_panic(false);
+}
+
+#[test]
+#[should_panic]
+fn test_vec_push() {
+    let mut v = Vec::new();
+    set_panic(true);
+    v.push(0);
+}
+
+#[test]
+fn test_vec_push_capacity() {
+    let mut v = Vec::with_capacity(1);
+    set_panic(true);
+    v.push(0);
+    v.pop();
+    v.push(0);
+    set_panic(false);
+}
+
+#[test]
+fn test_vec_with_zero() {
+    set_panic(true);
+    let _v: Vec<u8> = black_box(Vec::with_capacity(0));
+    set_panic(false);
+}
+
+#[test]
+fn test_vec_new() {
+    set_panic(true);
+    let _v: Vec<u8> = black_box(Vec::new());
+    set_panic(false);
+}
+
+#[test]
+#[should_panic]
+fn test_vec_with_one() {
+    set_panic(true);
+    let _v: Vec<u8> = Vec::with_capacity(1);
 }
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