SL Baur <steve(a)xemacs.org&gt; writes: The code I have in glibc does not have this problem. There are three functions: backtrace() to get the values backtrace_symbols() to convert it into symbols or backtrace_symbols_fd() to immediately write the result to an file descriptor I would say that seeing these functions crashing is highly unlikely unless the memory the libc uses gets clobbered. It is not a simple minded implementation. -- ---------------. drepper at gnu.org ,-. 1325 Chesapeake Terrace Ulrich Drepper \ ,-------------------' \ Sunnyvale, CA 94089 USA Cygnus Solutions `--' drepper at cygnus.com `------------------------