https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95750
--- Comment #5 from andysem at mail dot ru --- > Please also read [1] why we avoid -4(%%esp). I believe, memcheck would complain because the value at -4(%%rsp) would be uninitialized. This is unfortunate. The workaround could be to initialize it prior to the atomic operation. This would avoid data dependencies with the surrounding code.
