Hanno Böck created XERCESC-2051: ----------------------------------- Summary: Overlapping memcpy call Key: XERCESC-2051 URL: https://issues.apache.org/jira/browse/XERCESC-2051 Project: Xerces-C++ Issue Type: Bug Affects Versions: 3.1.2 Reporter: Hanno Böck Priority: Minor Attachments: xerces-c-overlapping-memcpy.diff
When running the test suite with address sanitizer enabled it will report an overlapping memcpy call: < ================================================================= < ==8236==ERROR: AddressSanitizer: memcpy-param-overlap: memory ranges [0x0000006678c0,0x0000006678ca) and [0x0000006678c2, 0x0000006678cc) overlap < #0 0x7f1025853f24 (/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/libasan.so.1+0x2ff24) < #1 0x7f1024df4bf8 in xercesc_3_1::XMLString::moveChars(unsigned short*, unsigned short const*, unsigned long) xercesc/util/XMLString.hpp:1446 < #2 0x7f1024e627eb in xercesc_3_1::XMLString::collapseWS(unsigned short*, xercesc_3_1::MemoryManager*) xercesc/util/XMLString.cpp:1813 < #3 0x44a098 in DOMTest::testUtilFunctions() src/DOM/DOMTest/DTest.cpp:5752 < #4 0x412865 in main src/DOM/DOMTest/DTest.cpp:984 < #5 0x7f10209b5f9f in __libc_start_main (/lib64/libc.so.6+0x1ff9f) < #6 0x405848 (/tmp/xerces-c-3.1.2/tests/.libs/DOMTest+0x405848) < < 0x0000006678c0 is located 0 bytes inside of global variable 'tempStr' from 'src/DOM/DOMTest/DTest.cpp' (0x6678c0) of size 8000 < 0x0000006678c2 is located 2 bytes inside of global variable 'tempStr' from 'src/DOM/DOMTest/DTest.cpp' (0x6678c0) of size 8000 < SUMMARY: AddressSanitizer: memcpy-param-overlap ??:0 ?? < ==8236==ABORTING memcpy calls to overlapping memory areas are not allowed. memmove can be used in such instances. (I'll attach a patch that changes that, but I'd ask for it to be reviewed by someone familiar with the code and check whether the overlapping copying is really intended.) -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org