DUMA library

What is going on if you get a SIGSEGV here?

Program received signal SIGSEGV, Segmentation fault.
0x00033b78 in _duma_init_slack (slot=0xfe280920) at duma_hlp.h:209
209 tmpBegAddr = (char*)slot->userAddress + slot->userSize;
Current language: auto; currently c
(gdb) where
#0 0x00033b78 in _duma_init_slack (slot=0xfe280920) at duma_hlp.h:209
#1 0x00035a48 in _duma_allocate (alignment=8, userSize=64, protectBelow=0, fillByte=255, protectAllocList=1, allocator=EFA_NEW_ELEM, fail=DUMA_FAIL_NULL,
filename=0x90248 "events.h", lineno=199) at duma.c:1466
#2 0x00032930 in operator new (size=64, filename=0x90248 "events.h", lineno=199) at dumapp.cpp:141

I would like to post a small test program here, but I haven't managed to isolate it yet.

Eddy