From b6e66639466f5583e6d1f77d5c8112096f923d7f Mon Sep 17 00:00:00 2001
From: Austin Clements <aclements@csail.mit.edu>
Date: Tue, 14 Jul 2009 18:05:29 -0700
Subject: [PATCH] Return ptrace event message when there's no error instead of
 only when there's an error.

R=rsc
APPROVED=rsc
DELTA=3  (0 added, 2 deleted, 1 changed)
OCL=31650
CL=31650
---
 src/pkg/syscall/syscall_linux.go | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/pkg/syscall/syscall_linux.go b/src/pkg/syscall/syscall_linux.go
index 70b34b46dc..ac77942a32 100644
--- a/src/pkg/syscall/syscall_linux.go
+++ b/src/pkg/syscall/syscall_linux.go
@@ -521,9 +521,7 @@ func PtraceSetOptions(pid int, options int) (errno int) {
 func PtraceGetEventMsg(pid int) (msg uint, errno int) {
 	var data _C_long;
 	errno = ptrace(_PTRACE_GETEVENTMSG, pid, 0, uintptr(unsafe.Pointer(&data)));
-	if errno != 0 {
-		msg = uint(data);
-	}
+	msg = uint(data);
 	return;
 }