[Bug lto/79587] ICE in streamer_write_gcov_count_stream, at data-streamer-out.c:343 while building Python 3.6.0 with PGO and LTO

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79587

--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 40768
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40768&action=edit
testcase for trunk