> Ah, good catch! That's a bit of a bummer though, since the nice thing > about execvp() is that it searches the path for the executable, so > it'll work even if the user has addr2line installed somewhere else > than /usr/bin. For execve(), one needs to provide an absolute path.
Yes, I know. Sorry :) > One solution could be to search the PATH for addr2line during library > initialization (where we don't need to be async-signal-safe), and then > store it somewhere and use it in show_backtrace(). That's one way. Another way is just to store a copy of the PATH during initialization, and only search addr2line when really needed (which can be done with a static buffer and a series of call to execve(), can't it?) FX
