I'm not really sure this is the best place to ask this question, but since the functions in questions are a part of libc, I figure this is as good a location as I can hope for. I've tried to use backtrace and backtrace_symbols/backtrace_symbols_fd to print ( what else? ) backtraces in certain parts of a shared object. The problem is that my output looks like: foo.so(offset1) foo.so(offset2) foo.so(function_name+offset3) I've compiled with the -g option and with the -Wl,-E option. (I've actually tried all four compbinations. ) In fact I've put sleep(10) in parts of the code, and run from the commandline. Then I start ddd and "attach to process" ( I mention ddd because it may do a bit more than straight gdb ). And I can see code in the shared object. That indicates that all the proper debug info is in there. So why am I not seeing something like foo.so(filename1:linenum1) foo.so(filename2:linenum2) foo.so(filename3:linenum3) (I'm concerened about the information not the format.) The project is n Linux running a 2.4.x kernel using gcc 2.96.whatever the last 2 version was. It is built from a Makefile I was given. The Makefile builds the so and copies it into a ( semi ) standard location. So the so may not be able to find the source (still it should be able to find the line and filename). Suggestions? Thaddeus L. Olczyk ----------------------- Think twice, code once.
