From 58fe5021bc640272262e18677da94b5b67940156 Mon Sep 17 00:00:00 2001
From: Jeff Carr <jcarr@wit.com>
Date: Sun, 26 May 2019 02:58:29 -0700
Subject: [PATCH] defer()

Signed-off-by: Jeff Carr <jcarr@wit.com>
---
 eventChannel.go |  1 +
 main.go         | 20 +++++++++++++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/eventChannel.go b/eventChannel.go
index f2bfdaa..673c4e5 100644
--- a/eventChannel.go
+++ b/eventChannel.go
@@ -52,6 +52,7 @@ func addEvent(msg *pb.Event) {
 
 // func processEvents(mychannel chan *pb.Event) {
 func processEvents() {
+	defer r() // a golang trick to try to not crash on certain errors
 	for {
 		currentMessage = <-mychannel
 		log.Println("processEvents() RECIEVED msg = ", currentMessage)
diff --git a/main.go b/main.go
index 247e372..58f89f5 100644
--- a/main.go
+++ b/main.go
@@ -155,15 +155,17 @@ func main() {
 // might be a good approach. Time will tell...
 //
 func mainMouseClick(b *gui.ButtonMap) {
+	defer r() // a golang trick to try to not crash on certain errors
+
 	if (b == nil) {
-		log.Println("main() BACK IN CONTROL PANEL CODE (button is nil) WHY DID THIS HAPPEN?")
-		log.Println("main() BACK IN CONTROL PANEL CODE (button is nil) WHY DID THIS HAPPEN?")
+		log.Println("mainMouseClick() BACK IN MAIN CONTROL PANEL CODE (button is nil) WHY DID THIS HAPPEN?")
+		log.Println("mainMouseClick() BACK IN MAIN CONTROL PANEL CODE (button is nil) WHY DID THIS HAPPEN?")
 		onExit(fmt.Errorf("mainMouseClick() got b = nil"))
 	}
 	log.Println("mainMouseClick() b.Action =", b.Action)
 
 	gui.Data.Current = b.Account
-	log.Println("main() BACK IN CONTROL PANEL CODE")
+	log.Println("mainMouseClick() BACK IN CONTROL PANEL CODE")
 	if (b.Account != nil) {
 		log.Println("\tmainMouseClick() setting current account = ", b.Account.Nick)
 	}
@@ -309,6 +311,18 @@ func mainMouseClick(b *gui.ButtonMap) {
 	}
 }
 
+// Doing this can sometimes avoid a panic() on things like:
+// panic: runtime error: slice bounds out of range
+
+func r() {
+	if r := recover(); r != nil {
+		fmt.Println("recover() SOMETHING IS REALLY BROKEN r =", r)
+		fmt.Println("recover() SOMETHING IS REALLY BROKEN r =", r)
+		fmt.Println("recover() SOMETHING IS REALLY BROKEN r =", r)
+	}
+}
+
+
 func prepareAndSend(event *pb.Event) {
 	if (event.Account == nil) {
 		log.Println("\tmain.prepareAndSend() ERROR event.Token = nil")