[xml] Crash on xmlMalloc

Hi all,

I'm developing an application using the library libxml2.

It seams that all was ok but yesterday my application crashed for an unknown reason.

I tried to debug and after some work I found that the line where my application crash is the xmlMalloc in the xmlParserCtxtPtr !

I'm using the libxml2 version 2.7.6

I'm using the autotools

=> In the file configure.ac :

# libxml2

PKG_CHECK_MODULES(LIBXMLDEPS, libxml-2.0 >= 2.6.8)

AC_SUBST(LIBXMLDEPS_CFLAGS)

=> In the file makefile.am :

libmxml_la_CPPFLAGS = -Iinclude $(LIBXMLDEPS_CFLAGS) -D_GNU_SOURCE

This is the back-trace :

*** glibc detected *** /home/mine/buildSVNLocal/web/cgi/config_etat.cgi: malloc(): memory corruption: 0x08052840 ***

======= Backtrace: =========

/lib/tls/i686/cmov/libc.so.6(+0x6b591)[0x55f591]

/lib/tls/i686/cmov/libc.so.6(+0x6e395)[0x562395]

/lib/tls/i686/cmov/libc.so.6(__libc_malloc+0x5c)[0x563f9c]

/usr/lib/libxml2.so.2(xmlNewParserCtxt+0x29)[0x3a02d9]

/usr/lib/libxml2.so.2(xmlCreateMemoryParserCtxt+0x34)[0x3a3d94]

/usr/lib/libxml2.so.2(xmlSAXParseMemoryWithData+0x34)[0x3bae74]

/usr/lib/libxml2.so.2(xmlSAXParseMemory+0x2e)[0x3baf3e]

/usr/lib/libxml2.so.2(xmlParseMemory+0x28)[0x3baf98]

/home/mine/local/lib/libmxml.so.1(raw_parse_buffer+0x93)[0x15dd0a] //I call here xmlParseMemory

This is the function :

xmlParserCtxtPtr xmlNewParserCtxt(void)

{

xmlParserCtxtPtr ctxt;

ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt));

if (ctxt == NULL) { //<- Never see this line !!!

xmlErrMemory(NULL, "cannot allocate parser context\n");

return(NULL);

}

memset(ctxt, 0, sizeof(xmlParserCtxt));

if (xmlInitParserCtxt(ctxt) < 0) {

xmlFreeParserCtxt(ctxt);

return(NULL);

}

return(ctxt);

}

With a google search I saw some errors with xmlMalloc but not in the same context that mine.

Do you have any ideas ? I need your help.

Thanks