From 2252f8dbe6c376f5dd6a862308a61c8e96563b44 Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@github.com>
Date: Wed, 28 Oct 2015 11:54:40 -0400
Subject: [PATCH] Free.analysis rethrows errors.

---
 prototype/Doubt/Free.swift | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/prototype/Doubt/Free.swift b/prototype/Doubt/Free.swift
index 0bc4908c3..a3ae68a02 100644
--- a/prototype/Doubt/Free.swift
+++ b/prototype/Doubt/Free.swift
@@ -21,12 +21,12 @@ public enum Free<Leaf, Annotation, Value>: CustomDebugStringConvertible {
 	}
 
 
-	public func analysis<C>(@noescape ifPure ifPure: Value -> C, @noescape ifRoll: (Annotation, Syntax<Free, Leaf>) -> C) -> C {
+	public func analysis<C>(@noescape ifPure ifPure: Value throws -> C, @noescape ifRoll: (Annotation, Syntax<Free, Leaf>) throws -> C) rethrows -> C {
 		switch self {
 		case let .Pure(b):
-			return ifPure(b)
+			return try ifPure(b)
 		case let .Roll(s):
-			return ifRoll(s)
+			return try ifRoll(s)
 		}
 	}