Re: [xml] xmlParseFile behaviour on BSD and Linux differs?

[John Fleck <jfleck inkstain net>]

Marcus -
I'm not aware of any obvious problems with xmlParseFile on Linux. I
stuffed your function into a minimal program to test it, and got no
segfault.
Does xmllint filename give you a segfault?
Cheers,
John

On Sun, 2003-04-20 at 12:45, Marcus von Appen wrote:
> Hello, 
>
> I'm using a xmlParseFile call, which works well on BSD, but does not do
> so on Linux. Are there any general known problems with that stuff?
>
> A backtrace: 
> [...]
> segfault
> (gdb) bt
> #0  0x42074230 in _int_malloc () from /lib/tls/libc.so.6
> #1  0x4207360b in malloc () from /lib/tls/libc.so.6
> #2  0x40492996 in xmlMallocLoc (size=40, file=0x8063068 "",
> line=134623336)    at xmlmemory.c:168
> #3  0x40492aac in xmlMemMalloc (size=40) at xmlmemory.c:220
> #4  0x40472a82 in xmlInitParserCtxt (ctxt=0x8062d30) at
> parserInternals.c:2215#5  0x40472ffc in xmlNewParserCtxt () at
> parserInternals.c:2371#6  0x40484f0e in xmlCreateFileParserCtxt (
>     filename=0x8062b10 "/home/marcus/l/data/basic.xml")
>     at parser.c:10410
> #7  0x40484fff in xmlSAXParseFileWithData (sax=0x0,
>     filename=0x8062b10 "/home/marcus/l/data/basic.xml",
>     recovery=0, data=0x0) at parser.c:10470
> #8  0x40485119 in xmlSAXParseFile (sax=0x0,
>     filename=0x8062b10 "/home/marcus/l/data/basic.xml",
>     recovery=0) at parser.c:10523
> #9  0x40485163 in xmlParseFile (
>     filename=0x8062b10 "/home/marcus/l/data/basic.xml")
>     at parser.c:10554
> #10 0x40019549 in data_lesson_add_file (
>     filename=0x8062b10 "/home/marcus/l/data/basic.xml")
>     at lesson.c:31
> [....]
>
> /* the function, where it crashes */
> xmlDocPtr
> data_lesson_add_file (char* filename)
> {
>   xmlDocPtr lesson_file;
>   /* testing */
>   if ((lesson_file = xmlParseFile (filename)) == NULL) /* crash */
>     {
>       printf ("Error, could not load %s\n", filename);
>         return NULL;
>     }    
>   return lesson_file;
> }
>
> There are no problems on FreeBSD, but it crashes continuously on Linux
> (tested on RedHat 9 and Debian with the shipped libxml as well as with a
> selfcompiled libxml2-2.5.6).
>
> Does anyone know, where such problems could suffer from and where I
> should take a closer look at?
>
> Thanks for any hint and regards
> Marcus
-- 
John Fleck
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http://www.inkstain.net http://www.abqjournal.com
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