On Tue, 8 Mar 2022, rapier wrote: > + UINT32 temp = *(UINT32 *)ptr; Can you guarantee it’s aligned? Otherwise, SIGBUS. Maybe not on x86, other platforms exist and enforce that though (x86’ll just slowdown). > + *(UINT32 *)ptr = (i >> 24) | ((i & 0x00FF0000) >> 8 ) > + | ((i & 0x0000FF00) << 8 ) | (i << 24); Can you guarantee it’s aligned *and* not UB? Otherwise, a version of GCC, possibly a future one, is guaranteed to miscompile that and pinskia will tell you it’s a feature… bye, //mirabilos -- Infrastrukturexperte • tarent solutions GmbH Am Dickobskreuz 10, D-53121 Bonn • http://www.tarent.de/ Telephon +49 228 54881-393 • Fax: +49 228 54881-235 HRB AG Bonn 5168 • USt-ID (VAT): DE122264941 Geschäftsführer: Dr. Stefan Barth, Kai Ebenrett, Boris Esser, Alexander Steeg **************************************************** /⁀\ The UTF-8 Ribbon ╲ ╱ Campaign against Mit dem tarent-Newsletter nichts mehr verpassen: ╳ HTML eMail! Also, https://www.tarent.de/newsletter ╱ ╲ header encryption! **************************************************** _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
