[XALANC-673] Assertion failed with XalanDOMString::substr

• Type: Bug
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 1.10
• Component/s: XalanC
• Environment: SunOS 5.9; Generic_118558-30 sun4u sparc SUNW,Sun-Fire-280R, 32 bit compilation fails with this assertion, when 64 bit not
• Assignee: David N Bertoni
• Reporter: Aleksandr Vinokurov
• Created: 07/May/08 17:57
• Updated: 18/May/08 22:09
• Resolved: 18/May/08 22:09

Description

There is an assertion failure with this code:

----------------------<cut>------------------------<

#include <xalanc/XalanTransformer/XalanTransformer.hpp>
#include <xalanc/XalanDOM/XalanDOMString.hpp>

XALAN_USING(XALAN_CPP_NAMESPACE, XalanDOMString)

int main(void) {
XALAN_USING_XERCES(XMLPlatformUtils)
XALAN_USING_XALAN(XalanTransformer)

XMLPlatformUtils::Initialize();
XalanTransformer::initialize();

XalanDOMString a("xxxxxxxxxxx"), b;

a.substr(b); //the same as a.substr(b, 0,
XalanDOMString::npos);

return 0;
}

----------------------<cut>------------------------<

Here goes the output:

----------------------<cut>------------------------<
Assertion failed: thePosition < theSource.size() && thePosition + theCount
<= theSource.size(), file
/u02/home/avinokur/xalan-c/xml-xalan/c/src/xalanc/XalanDOM/XalanDOMString.cp
p, line 224
Abort (core dumped)
----------------------<cut>------------------------<

As I've found the assertion fails in "thePosition + theCount <=
theSource.size()" code, computing it to "0 + 4294967295 <= 11". Trying
"a.substr(b, 1)", the condition will be "1 + 4294967295 <= 11" which is "0 <
11" due to "typedef unsigned int size_type;" code from
``xalanc/XalanDOM/XalanDOMString.hpp''.