https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108498
--- Comment #4 from Adam Stylinski <kungfujesus06 at gmail dot com> --- Also I strongly suspect valgrind is correctly identifying the unitialized bits because the underlying bug it produces is a "sometimes" bug, depending on what's on the heap. Sometimes insn.sat is 0 (when it behaves correctly), sometimes it's 1 (black screen).
