Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/68#discussion_r38144291
--- Diff: core/sql/optimizer/opt.cpp ---
@@ -998,12 +998,18 @@ NAString Context::getRequirementsString() const
{
NAString IPPString("", CmpCommon::statementHeap());
- char thisptr[7 + sizeof(void *)];
+ // will receive the string "ptr=%p, ", where %p is a hex address
+ // example: "ptr=0x7fffffff23db, "
+ // so we need 4 bytes for "ptr=", 2 bytes for the "0x", up to
+ // 2 * sizeof(void *) bytes for the hex (each nibble goes to
+ // one ASCII character), 2 bytes for the ", " and 1 byte for
+ // the trailing null
+ char thisptr[4 + 2 + 2*sizeof(void *) + 2 + 1];
--- End diff --
Note to reviewers: I noticed this buffer overrun bug when I was debugging
and fixed it. Looked around for other similar bugs but did not find any.
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