[gpm]

Speaking of the rr folk, they also had the fascinating point that you can reliably generate a "stack trace" by figuring out which `call` instructions were executed with what values (also other jump instructions I suppose), instead of walking the stack. Thereby skipping the whole "parsing the stack is insanely difficult and unreliable" issue.

[glandium]

FWIW, that's from pernosco, not rr.

[gpm]

I think it's the same people?

[db48x]

It is. rr records the trace and the Pernosco converts it into a database that can be queried.