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Top Forums Programming -Warray-bounds option to GCC compiler Post 303013093 by milhan on Wednesday 14th of February 2018 06:48:22 PM
Old 02-14-2018
bakunin,
Thanks for the explanation. I know what array bounds checking means. That's why I posted this question. Have you tried turning on the -Warray-bounds on GCC and accessing an illegal array position to see if it works as you described? I was expecting the compiler will give me warning for accessing an array element beyond its declared size, but it didn't give me any warnings at all. The below program runs just fine on my Linux box. I gave the gcc version on my post above. If I assign 10000 to index, program give segmentation fault, but still compiles with no warnings. -Warray-bounds switch is on.
Code:
int main()
{
	const int index=1000;
	int numbers[8] = {1,2,3,4,5,6,7,8};

	numbers[index] = 999;
	cout << numbers[index] << endl;

	return 0;
}

 

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List(3pm)						  LogReport's Lire Documentation						 List(3pm)

NAME
Lire::Config::List - List Value Object. DESCRIPTION
Used for configuration parameters which contains a list of values. elements() Returns this list's values as an array of Lire::Config::Value object. get( $idx ) Returns the value stored at index $idx of this list. An exception is thrown if the index is out-of-bounds. remove( $idx ) Removes the value stored at index $idx of this list. An exception is thrown if the index is out-of-bounds. It returns the deleted element. clear() Removes all elements from this list append( $val, [ $idx ] ) Adds $val to after element $idx. If $idx is omitted, the element will be added at the end of the array. A negative index is interpreted relative to the end of the array. move( $idx, $new_idx ) Moves element $idx at position $new_idx. Indices can be negative and are interpreted as position relative to the end of the array. set( $idx, $value ) Replaces value at index $idx with $value. AUTHOR
Wessel Dankers <wsl@logreport.org> VERSION
$Id: List.pm,v 1.16 2006/07/23 13:16:30 vanbaal Exp $ COPYRIGHT
Copyright (C) 2002-2004 Stichting LogReport Foundation LogReport@LogReport.org This file is part of Lire. Lire is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with http://www.gnu.org/copyleft/gpl.html. Lire 2.1.1 2006-07-23 List(3pm)
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