Patch-ID# 100410-01
Keywords: Ada, task, exception, SIGIO, runtime
Synopsis: SunAda: Trapping for SIGIO with a task entry causes a hardware exception
Date: 17-Oct-91
 
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	PLEASE read the ENTIRE installation discussion before proceeding with the
	installation of this patch.
 
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SunOS release: 4.1.1
 
Unbundled Product: Sun Ada
 
Unbundled Release: 1.0
 
Topic: Patch for tasking runtime
 
BugId's fixed with this patch:

	1072371 Trapping for SIGIO with a task entry causes a hardware exception
		Matches Verdix DR 1529

Architectures for which this patch is available: sun4, sun4c

Patches which may conflict with this patch: none

Obsoleted by: 

Problem Description: 

	Using an interrupt task entry to catch SIGIO will cause an exception to
	be raised in the RunTime System (RTS).  The user program dies.  The problem
	is caused by the idle task's stack being too small.

INSTALL:

To install this patch, you must become the owner of the Sun Ada release
(usually root) and go to the directory where you installed Sun Ada:

	mv <Sun Ada directory>/standard/.objects/tasking.a <Sun Ada directory>/standard/.objects/tasking.a.FCS
	mv <Sun Ada directory>/sunview/.objects/tasking.a <Sun Ada directory>/sunview/.objects/tasking.a.FCS
	mv <Sun Ada directory>/xview/lib/tasking.a <Sun Ada directory>/xview/lib/tasking.a.FCS
	cp standard/.objects/tasking.a <Sun Ada directory>/standard/.objects/tasking.a
	cp sunview/.objects/tasking.a <Sun Ada directory>/sunview/.objects/tasking.a
	cp xview/lib/tasking.a <Sun Ada directory>/xview/lib/tasking.a