https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64359
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Created attachment 34301 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34301&action=edit example testcase Here's an example: markus@x4 Release % perf record c++ -O2 -std=gnu++11 -c preferences_private_api.ii [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.712 MB perf.data (~31117 samples) ] markus@x4 Release % perf report ...