rleigh-codelibre commented on code in PR #51:
URL: https://github.com/apache/xerces-c/pull/51#discussion_r986046406
##########
src/xercesc/validators/common/DFAContentModel.cpp:
##########
@@ -661,8 +662,15 @@ void DFAContentModel::buildDFA(ContentSpecNode* const
curNode)
// in the fLeafCount member.
//
fLeafCount=countLeafNodes(curNode);
+ // Avoid integer overflow in below fLeafCount++ increment
+ if (fLeafCount > std::numeric_limits<unsigned int>::max() - 1)
+ throw OutOfMemoryException();
fEOCPos = fLeafCount++;
+ // Avoid integer overflow in below memory allocatoin
+ if (fLeafCount > std::numeric_limits<size_t>::max() / sizeof(CMLeaf*))
Review Comment:
I just meant `fLeafCount > (std::numeric_limits<size_t>::max() /
sizeof(CMLeaf*))` so that the operator precedence is explicit (and the same for
below).
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