[Gap-dev-discuss] One more crasher in Cynthiune

[Sebastian Reitenbach]

Hi,

another crasher, now with your updated patch you just sent. But I think, its 
not caused by
the patch, I guess it must have been there before.

How to reproduce:
1. start one song playing.
2. double click another song from the playlist while the other song still plays
3. if not crash, repeat step two a couple of times

The crash may not always happen, but can be on the third or fourth try
double clicking different songs from the playlist. 

Since the AO threadLoop is involved, I already tried to put the lock before the 
line
like this:

 [devlock lock];
 bufferSize = [parentPlayer readNextChunk: buffer
                                      withSize: DEFAULT_BUFFER_SIZE];

but that did not helped here.

Sebastian

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 1028692]
0x86066648 in memcpy (dst0=0x8362a8d4, src0=0x8362a8d5, length=0)
    at /usr/src/lib/libc/string/bcopy.c:91
91      /usr/src/lib/libc/string/bcopy.c: No such file or directory.
        in /usr/src/lib/libc/string/bcopy.c
(gdb) bt
#0  0x86066648 in memcpy (dst0=0x8362a8d4, src0=0x8362a8d5, length=0)
    at /usr/src/lib/libc/string/bcopy.c:91
#1  0x8971a694 in calcInputRemain (stream=0x8362745c, 
    iBuffer=0x8362a8d4 <Address 0x8362a8d4 out of bounds>) at MP3.m:120
#2  0x8971b168 in -[MP3 readNextChunk:withSize:] (self=0x83625008, 
    _cmd=0x185b0ec, buffer=0x8a663030 "\001", bufferSize=8192) at MP3.m:536
#3  0x01815104 in -[Player readNextChunk:withSize:] (self=0x896cc0c8, 
    _cmd=0x8a3b95b0, buffer=0x8a663030 "\001", bufferSize=8192) at Player.m:245
#4  0x8a3981e0 in -[AO threadLoop] (self=0x8a663008, _cmd=0x8a3b95d0)
    at ao.m:130
#5  0x822c7c80 in -[NSObject performSelector:withObject:] (self=0x8a663008, 
    _cmd=0x825affac, aSelector=0x8a3b95d0, anObject=0x0) at NSObject.m:2010
#6  0x8235d53c in -[NSThread gnustep:base:user:main] (self=0x835d5388, 
    _cmd=0x825affb4) at NSThread.m:741
#7  0x8235d7fc in nsthreadLauncher (thread=0x835d5388) at NSThread.m:807
#8  0x85f51258 in _rthread_start (v=Variable "v" is not available.
) at /usr/src/lib/librthread/rthread.c:113
#9  0x85fe07f8 in __tfork_thread () from /usr/lib/libc.so.64.0
#10 0x85fe07f8 in __tfork_thread () from /usr/lib/libc.so.64.0
Previous frame identical to this frame (corrupt stack?)