Infinite loop in objc_storeWeak

[Thomas Davie]

Hi all,

I'm just trying to get some zeroing weak reference code working, and wrote 
myself a little wrapper library that gives me an NSValue like object storing a 
zeroing weak reference to another object.

Unfortunately, when that's linked into another project and run, I get an 
infinite loop in objc_storeWeak (as shown below).

Anyone know how to deal with this scenario?

Thanks

Tom Davie

0x00007ffff69bd37c in objc_storeWeak (addr=<optimized out>, obj=<optimized 
out>) at arc.m:493
493                                     if (0 == ref->ref[i])
(gdb) p ref
$1 = <optimized out>
(gdb) n
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
500                             if (ref->next == NULL)
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
500                             if (ref->next == NULL)
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)
(gdb) 
493                                     if (0 == ref->ref[i])
(gdb) 
491                             for (int i=0 ; i<4 ; i++)