From aa92f7489a25c1b7490e21cade7db4be8dd8a8a1 Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Wed, 14 Dec 2016 02:21:03 +0000
Subject: [PATCH] Warn on passing different props to super()

---
 scripts/fiber/tests-passing-except-dev.txt             | 1 -
 scripts/fiber/tests-passing.txt                        | 1 +
 src/renderers/shared/fiber/ReactFiberClassComponent.js | 8 ++++++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/fiber/tests-passing-except-dev.txt b/scripts/fiber/tests-passing-except-dev.txt
index 2fd5a6792a9ec..3ca34eebd493b 100644
--- a/scripts/fiber/tests-passing-except-dev.txt
+++ b/scripts/fiber/tests-passing-except-dev.txt
@@ -146,7 +146,6 @@ src/renderers/shared/shared/__tests__/ReactCompositeComponent-test.js
 * should warn about `forceUpdate` on unmounted components
 * should warn about `setState` on unmounted components
 * should disallow nested render calls
-* should warn when mutated props are passed
 
 src/renderers/shared/shared/__tests__/ReactMultiChild-test.js
 * should warn for duplicated keys with component stack info
diff --git a/scripts/fiber/tests-passing.txt b/scripts/fiber/tests-passing.txt
index 17251177b87af..b68d9c2602327 100644
--- a/scripts/fiber/tests-passing.txt
+++ b/scripts/fiber/tests-passing.txt
@@ -1333,6 +1333,7 @@ src/renderers/shared/shared/__tests__/ReactCompositeComponent-test.js
 * should replace state
 * should support objects with prototypes as state
 * should not warn about unmounting during unmounting
+* should warn when mutated props are passed
 * should only call componentWillUnmount once
 
 src/renderers/shared/shared/__tests__/ReactCompositeComponentDOMMinimalism-test.js
diff --git a/src/renderers/shared/fiber/ReactFiberClassComponent.js b/src/renderers/shared/fiber/ReactFiberClassComponent.js
index 79a6a9ebc9ef0..79595dd152d7c 100644
--- a/src/renderers/shared/fiber/ReactFiberClassComponent.js
+++ b/src/renderers/shared/fiber/ReactFiberClassComponent.js
@@ -180,6 +180,14 @@ module.exports = function(scheduleUpdate : (fiber: Fiber) => void) {
         'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?',
         name
       );
+      const hasMutatedProps = instance.props !== workInProgress.pendingProps;
+      warning(
+        instance.props === undefined || !hasMutatedProps,
+        '%s(...): When calling super() in `%s`, make sure to pass ' +
+        'up the same props that your component\'s constructor was passed.',
+        name,
+        name
+      );
     }
 
     const state = instance.state;