My plan was to make a statically linked icecast binary, that also incorporates
libc and friends - it's supposed to be autonomous. Note that these segfaults do
not happen when the standard libs are dynamically linked (ogg, vorbis, libxml2
and libxslt always being statically linked into icecast, because i don't want to
keep the whole build environment + libs all the time in my homedir).
What I did was simply add the parameter -static to the final gcc line, when the
binary gets linked. All libs from elsewhere and Xiph are either the latest
release (libiconv, libxml, ...) or today's CVS (2003-07-07, ogg, vorbis,
icecast)
#1
Built on some Redhat Linux with gcc 2.96 (blegh) and gcc 3.1 (blegh), with
identical effect, making me believe that it's not a compiler bug for a change.
Maybe it's a crappy libc... This segfault is minor, because it happens when the
server is terminated with a SIGTERM, i.e. a CTRL-C. A SIGABRT doesn't trigger
the segfault. Maybe it's a hidden memory leak as well? Here's the backtrace:
#0 0x0811b778 in chunk_free ()
#1 0x0811deed in free ()
#2 0x080c2a81 in xmlCleanupGlobals () at globals.c:49
#3 0x080882cb in xmlCleanupParser () at parser.c:11179
#4 0x0804a050 in main (argc=3, argv=0x8283080) at main.c:105
#5 0x0810a53a in __libc_start_main ()
#2
Built on a current Gentoo Linux, also against libraries in my homedir to avoid
the -O3 -mcpu... optimizations everywhere and possible breakage that comes with
it. This would be gcc 3.2.2. Not tested with stdlibs linked dynamically, but
this happens when a source connects to the statically linked server, running on
the same Redhat box from segfault #1:
#0 0x081bf7e8 in strcasecmp ()
#1 0x0805a14f in httpp_parse (parser=0x83fbb08,
http_data=0xbf3feacc "SOURCE /kolaradio.ogg HTTP/1.0\nAuthorization: Basic
c291cmNlOnNpbXB1bHNlOQ==\nice-name: KOLAradio test stream\nice-genre:
misc\nice-audio-info: samplerate=44100;channels=2;quality=1%2e00\nice-public:
0\nic"..., len=291) at httpp.c:370
#2 0x0804ce0a in _handle_connection (arg=0x0) at connection.c:910
#3 0x080593d4 in _start_routine (arg=0x83e7b40) at thread.c:654
#4 0x0819cd3d in pthread_start_thread ()
patient: "Doctor! It hurts when I do this!"
patient: *pokes own eye* / *links statically*
doctor: "Then don't do it!"
Yeah, I know, that's why this isn't very serious. ;) I'd like to see this
working, despite the limited use for entirely static binaries, so if someone
finds the time to look into this, I'd appreciate that a lot.
Thanks,
Moritz
