Any chance you can do a build with symbols (CFLAGS=-g or --enable-maintainer-mode) and use a debugger that will display line numbers for the backtrace?
oops, probably best to use --enable-maintainer-mode... LDFLAGS would need -g too
Any chance you can do a build with symbols (CFLAGS=-g or --enable-maintainer-mode) and use a debugger that will display line numbers for the backtrace?