https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61779
--- Comment #7 from Vittorio Zecca <zeccav at gmail dot com> --- I forgot to mention that my code fragment comes from #include <sys/sdt.h> void f(void) { for (;;) _SDT_PROBE(0, 0, 1,(0)); } Maybe you can find intelligent ways to exercise this code and find more -Og bugs?