main missing about gprof2dot HOT 3 CLOSED

There are 2 problems here:

• gprof couldn't figure out who called strlen. Perhaps because libc had no debug information, or due to some limitation with m68k architecture (e.g., no stack frame pointer by default)?

• gprof lists main as a caller (ie, an edge on the call graph), but didn't create a node for it in the report. No idea why. I never seen this with x86. Perhaps gprof's -c/--static-call-graph help.

Both issues are in gcc/gprof domain, not the gprof2dot tool. The missing main issue is minor IMO. But the strlen is a showstopper -- if time spent in libc functions is not accurately billed to the callers, then the whole graph will end up biased and useless.

I hope this helps.

from gprof2dot.

Thank you very much for the explaination! It's very much appreciated. I am sure it will help our m68k gprof.

Happy New Year!

from gprof2dot.

I had main() missing on x86_64. But then I used alternative approach:

valgrind --tool=callgrind

from gprof2dot.