[ET Trac] [Einstein Toolkit] #1856: Improve stack backtraces

#1856: Improve stack backtraces -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: eschnett Type: enhancement | Status: new Priority: optional | Milestone: Component: Carpet | Version: development version Keywords: | -------------------------+-------------------------------------------------- I found <https://stackoverflow.com/questions/77005/how-to-generate-a -stacktrace-when-my-gcc-c-app-crashes>. We should go through the example here, and compare to our code to see whether we can improve it.