From caa7dacfd27beb493c262b18a9aae514863ddec7 Mon Sep 17 00:00:00 2001
From: Austin Clements <austin@google.com>
Date: Tue, 7 Mar 2017 15:24:02 -0500
Subject: [PATCH] runtime: honor GOTRACEBACK=crash even if _g_.m.traceback != 0

Change-Id: I6de1ef8f67bde044b8706c01e98400e266e1f8f0
Reviewed-on: https://go-review.googlesource.com/37857
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
---
 src/runtime/runtime1.go | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/runtime/runtime1.go b/src/runtime/runtime1.go
index 3d4578844b..2f7317b501 100644
--- a/src/runtime/runtime1.go
+++ b/src/runtime/runtime1.go
@@ -35,15 +35,14 @@ var traceback_env uint32
 //go:nosplit
 func gotraceback() (level int32, all, crash bool) {
 	_g_ := getg()
-	all = _g_.m.throwing > 0
-	if _g_.m.traceback != 0 {
-		level = int32(_g_.m.traceback)
-		return
-	}
 	t := atomic.Load(&traceback_cache)
 	crash = t&tracebackCrash != 0
-	all = all || t&tracebackAll != 0
-	level = int32(t >> tracebackShift)
+	all = _g_.m.throwing > 0 || t&tracebackAll != 0
+	if _g_.m.traceback != 0 {
+		level = int32(_g_.m.traceback)
+	} else {
+		level = int32(t >> tracebackShift)
+	}
 	return
 }