https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89893
--- Comment #19 from 康 珊 <kangshan0910 at hotmail dot com> --- I tried the following experiments: 1)Tried "__attribute__((noinline)) uv_unref(uv_handle_t*)", it could solve the issue. 2)Tried "__attribute__((noipa)) uv_unref(uv_handle_t*)", it could solve the issue. 2)Tried "-O2", it could not solve the issue. 3)Tried "-O2 -fno-strict-aliasing", it could not solve the issue. 4)Tried "-O3 -fno-strict-aliasing", it could not solve the issue.