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Posted to c-dev@xerces.apache.org by "Scott Cantor (JIRA)" <xe...@xml.apache.org> on 2017/07/06 17:46:00 UTC
[jira] [Commented] (XERCESC-2105) Review results of compile with
-Wstrict-overflow
[ https://issues.apache.org/jira/browse/XERCESC-2105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076967#comment-16076967 ]
Scott Cantor commented on XERCESC-2105:
---------------------------------------
r1801083
Added autoconf and (hopefully) CMake rules for defining XERCES_SIZE_MAX and XERCES_SSIZE_MAX to assist with correct bounds checking of XMLSize_t types.
> Review results of compile with -Wstrict-overflow
> ------------------------------------------------
>
> Key: XERCESC-2105
> URL: https://issues.apache.org/jira/browse/XERCESC-2105
> Project: Xerces-C++
> Issue Type: Task
> Reporter: Scott Cantor
> Assignee: Scott Cantor
> Fix For: 3.2.0
>
> Attachments: xerces-build.txt
>
>
> The code base has had a number of pointer/length overflow bugs, so I thought it would be a good idea to do a gcc build with -O2 -Wall -Wstrict-overflow=5 to flag any cases where we're doing pointer math on potentially huge offset values that might overflow. This can defeat boundary checking because of compiler optimizations.
> Attaching a build on RH7 with the libtool commands altered to output the warnings for review.
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