No stack trace when running in GitHub actions.

[j-jorge]

Hello, I have added cpptrace to my program and I handle the crashes using the fork+delegate printing to a second program. The main program has a command-line argument to force a crash. When I run the program on my laptop the stacktrace is printed as expected, but when I run it in GitHub Actions it shows "<empty trace>". This is a debug build with g++ and cpptrace 1.0.2.

Do you know any limitations about using the library in an environment like GitHub Actions ? When I run the app in a Docker image on my laptop it works as expected too.

[j-jorge]

I think I got it. can_signal_safe_unwind() returns true on my laptop but false when running on the CI. The logs on the CI say that unwind is used:

-- Cpptrace auto config: Using libgcc unwind for unwinding
-- Cpptrace auto config: Using libdwarf for symbols
-- Cpptrace auto config: Using cxxabi for demangling

And this is where I was mistaken: libgcc unwind is not libunwind. I will force libunwind and I expect that it will fix my issue.

[j-jorge]

Confirmed, it was a pebcak. Cpptrace defaults to libunwind if it is available, which it is on my laptop but obviously not in the fresh image used in the CI.

[jeremy-rifkin]

Hi,
It looks like you found the issue, glad you did. Pardon my delayed reply. Generally issues here are always related to libunwind not being available.