SIGSEGV in GC_mark_from

Wed Sep 5 14:22:00 GMT 2001

Here's what I'm puzzling over today:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 17 (LWP 3)]
GC_mark_from (mark_stack_top=0xfd7c57f8, mark_stack=0xfd7b0000, 
 mark_stack_limit=0xfd7d0000) at ../../../boehm-gc/mark.c:654
654 deferred = *limit;
This is reproducible but not deterministic. "limit" looks like a
legal address but doesn't seem to be mapped:
(gdb) print limit
1ドル = (word *) 0xfe8780b0
(gdb) call GC_print_heap_sects()
Total heap size: 16662528
Section 0 from 0xfe940000 to 0xfe950000 0/16 blacklisted
Section 1 from 0xfe8e0000 to 0xfe8f0000 0/16 blacklisted
Section 2 from 0xfe8c0000 to 0xfe8d0000 0/16 blacklisted
Section 3 from 0xfe880000 to 0xfe892000 0/18 blacklisted
Section 4 from 0xfe860000 to 0xfe878000 0/24 blacklisted
...
The descriptor doesn't look right either:
(gdb) print (void *)descr
37ドル = (void *) 0xfd355af0
Any ideas? This is on sparc-sun-solaris2.7.
Jeff