From c678c30cf19d47961f04e5782b7890d3b289b7f0 Mon Sep 17 00:00:00 2001
From: Jorge Canizales <jcanizales@google.com>
Date: Fri, 7 Aug 2015 18:28:29 -0700
Subject: [PATCH] Fix ForwardingWriter init preconditions
---
src/objective-c/RxLibrary/GRXForwardingWriter.m | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/objective-c/RxLibrary/GRXForwardingWriter.m b/src/objective-c/RxLibrary/GRXForwardingWriter.m
index 2342f51ab3..cf8be8c557 100644
--- a/src/objective-c/RxLibrary/GRXForwardingWriter.m
+++ b/src/objective-c/RxLibrary/GRXForwardingWriter.m
@@ -48,7 +48,10 @@
// Designated initializer
- (instancetype)initWithWriter:(GRXWriter *)writer {
if (!writer) {
- [NSException raise:NSInvalidArgumentException format:@"writer can't be nil."];
+ return nil;
+ }
+ if (writer.state != GRXWriterStateNotStarted) {
+ [NSException raise:NSInvalidArgumentException format:@"writer can't be started."];
}
if ((self = [super init])) {
_writer = writer;
--
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