Tcl Source Code

2008-07-15  Miguel Sofer  <[email protected]>

	* tests/NRE.test:    better constraint for testing the 
	* tests/stack.test:  existence of teststacklimit, to insure that
	                     the testsuite runs under tclsh.
	
	* generic/tclParse.c: fixing incomplete reversion of "fix" for
	[Bug 2017583], missing TclResetCancellation call. 

2008-07-15  Donal K. Fellows  <[email protected]>

	* generic/tclBasic.c (Tcl_CancelEval): Fix blunder. [Bug 2018603]

# Commands covered:  proc, apply, [interp alias], [namespce import], tailcall
#
# This file contains a collection of tests for the non-recursive executor that
# avoids recursive calls to TEBC.
#
# Copyright (c) 2008 by Miguel Sofer.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: NRE.test,v 1.2 2008/07/16 00:44:44 msofer Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import -force ::tcltest::*
}

testConstraint tailcall [llength [info commands ::tcl::unsupported::tailcall]]
testConstraint teststacklimit [llength [info commands teststacklimit]]

if {[testConstraint teststacklimit]} {
    #
    # Workaround for gnu-make bug http://savannah.gnu.org/bugs/?18396
    #
    # Do not let make set up too large a C stack for us, as it effectively
    # disables the tests under some circumstances
    #

    set oldLimit [teststacklimit 2048]
}




#
# The first few tests will blow the C stack if the NR machinery is not working
# properly: all these calls should execute within the same instance of TEBC,
# and thus do not load the C stack. The nesting limit is given by how much the
# Tcl execution stack can grow. 
#

#



# cleanup
::tcltest::cleanupTests

if {[testConstraint teststacklimit]} {
    teststacklimit $oldLimit
}


return

# Tests that the stack size is big enough for the application.
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#
# Copyright (c) 1998-2000 Ajuba Solutions.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: stack.test,v 1.24 2008/07/16 00:44:44 msofer Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2
    namespace import -force ::tcltest::*
}

# Note that a failure in this test results in a crash of the executable.
# In order to avoid that, we do a basic check of the current stacksize.
# This size can be changed with ulimit (ksh/bash/sh) or limit (csh/tcsh).

# This doesn't catch all cases, for example threads of lower stacksize
# can still squeak through.  A core check is really needed. -- JH

testConstraint minStack2400 1
testConstraint teststacklimit [llength [info commands teststacklimit]]

if {[testConstraint unix]} {
    if {[testConstraint teststacklimit]} {
	set stackSize [teststacklimit]
    } else {
	set stackSize [exec /bin/sh -c "ulimit -s"]
    }
    if {($stackSize > -1)  && ($stackSize < 2400)} {
        puts stderr "WARNING: the default application stacksize of $stackSize\
                may cause Tcl to\ncrash due to stack overflow before the\
                recursion limit is reached.\nA minimum stacksize of 2400\
                kbytes is recommended.\nSkipping infinite recursion test."
        testConstraint minStack2400 0
    }