diff --git a/Sources/Foundation/NSNumber.swift b/Sources/Foundation/NSNumber.swift
index e0d6243042..78d03e8b77 100644
--- a/Sources/Foundation/NSNumber.swift
+++ b/Sources/Foundation/NSNumber.swift
@@ -49,7 +49,9 @@ extension Int8 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Int8?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Int8?) -> Bool {
@@ -87,7 +89,9 @@ extension UInt8 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt8?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt8?) -> Bool {
@@ -125,7 +129,9 @@ extension Int16 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Int16?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Int16?) -> Bool {
@@ -163,7 +169,9 @@ extension UInt16 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt16?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt16?) -> Bool {
@@ -201,7 +209,9 @@ extension Int32 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Int32?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Int32?) -> Bool {
@@ -239,7 +249,9 @@ extension UInt32 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt32?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt32?) -> Bool {
@@ -277,7 +289,9 @@ extension Int64 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Int64?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Int64?) -> Bool {
@@ -315,7 +329,9 @@ extension UInt64 : _ObjectiveCBridgeable {
     }
 
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt64?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
 
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt64?) -> Bool {
@@ -353,7 +369,9 @@ extension Int : _ObjectiveCBridgeable {
     }
     
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Int?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
     
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Int?) -> Bool {
@@ -391,7 +409,9 @@ extension UInt : _ObjectiveCBridgeable {
     }
     
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
     
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout UInt?) -> Bool {
@@ -437,7 +457,9 @@ extension Float : _ObjectiveCBridgeable {
     }
     
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Float?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
     
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Float?) -> Bool {
@@ -488,7 +510,9 @@ extension Double : _ObjectiveCBridgeable {
     }
     
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Double?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
     
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Double?) -> Bool {
@@ -533,7 +557,9 @@ extension Bool : _ObjectiveCBridgeable {
     }
     
     public static func _forceBridgeFromObjectiveC(_ x: NSNumber, result: inout Bool?) {
-        result = _unconditionallyBridgeFromObjectiveC(x)
+        if !_conditionallyBridgeFromObjectiveC(x, result: &result) {
+            fatalError("Unable to bridge \(type(of: x)) to \(self)")
+        }
     }
     
     public static func _conditionallyBridgeFromObjectiveC(_ x: NSNumber, result: inout Bool?) -> Bool {