git: 9front

Download patch

ref: b7cff74f1fd5b90002dd081d06041159af350a8c
parent: 78b9c2b9f2dcc79a3d5dbfadfdea8c3e8cb1fa22
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Tue Dec 31 02:29:55 EST 2013

kernel: check for error label stack underflow in nexterror()

--- a/sys/src/9/port/proc.c

+++ b/sys/src/9/port/proc.c

@@ -1467,6 +1467,7 @@

 void

 nexterror(void)

 {

+	assert(up->nerrlab > 0);

 	gotolabel(&up->errlab[--up->nerrlab]);

 }

-- 

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