[XERCESC-2049] memcpy used on overlapping memory regions causes sanity test failure

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.2
• Fix Version/s: 3.2.0, 3.1.3
• Component/s: Utilities
• Environment: Debian unstable (sid) and Debian stable (jessie) on amd64
• Assignee: Alberto Massari
• Reporter: Bill Blough
• Created: 02/May/15 04:14
• Updated: 28/Aug/17 23:41
• Resolved: 04/May/15 14:30

Description

On Debian Jessie (libc6 2.19, libstdc++ 4.9.2) and newer, sanityTest.pl fails its tests of XMLString::collapseWS.

Tracing with GDB shows that XMLString::moveChars is corrupting the string. I think this is likely due to memcpy being used on overlapping memory regions.

Replacing the memcpy in moveChars with memmove fixes the issue on my systems.

Issue Links

• is duplicated by: XERCESC-2051 Overlapping memcpy call