A NOTE has been added to this issue. ====================================================================== https://austingroupbugs.net/view.php?id=1641 ====================================================================== Reported By: bastien Assigned To: ====================================================================== Project: 1003.1(2016/18)/Issue7+TC2 Issue ID: 1641 Category: System Interfaces Type: Clarification Requested Severity: Editorial Priority: normal Status: Interpretation Required Name: Bastien Roucaries Organization: debian User Reference: Section: sys/socket.h Page Number: Application usage Line Number: sockaddr_storage Interp Status: Pending Final Accepted Text: see https://austingroupbugs.net/view.php?id=1641#c6255 ====================================================================== Date Submitted: 2023-03-18 07:52 UTC Last Modified: 2023-04-06 19:24 UTC ====================================================================== Summary: sockaddr_storage is not alias safe ======================================================================
---------------------------------------------------------------------- (0006257) eblake (manager) - 2023-04-06 19:24 https://austingroupbugs.net/view.php?id=1641#c6257 ---------------------------------------------------------------------- [Copying a message from Zack Weinberg on https://sourceware.org/pipermail/libc-alpha/2023-April/147046.html] If I could suggest an additional change, the focus on aliasing _diagnostics_ rather misses the point IMHO. We don't just want the compiler to _not complain_ about accesses to sa_family_t, we want it to treat the accesses as _legitimate_. So, instead of # Additionally, the structures shall be defined in such a way that # these casts do not cause the compiler to produce diagnostics about # aliasing issues in accessing the sa_family_t member of these # structures when compiling conforming application (xref to XBD section # 2.2) source files. may I suggest wording along the lines of # Additionally, the structures shall be defined in such a way that # the compiler treats an access to the stored value of the sa_family_t # member of any of these structures, via an lvalue expression whose type # involves any other one of these structures, as permissible, despite the # more restrictive rules listed in ISO C section 6.5p7. Issue History Date Modified Username Field Change ====================================================================== 2023-03-18 07:52 bastien New Issue 2023-03-18 07:52 bastien Name => Bastien Roucaries 2023-03-18 07:52 bastien Organization => debian 2023-03-18 07:52 bastien Section => sys/socket.h 2023-03-18 07:52 bastien Page Number => Application usage 2023-03-18 07:52 bastien Line Number => sockaddr_storage 2023-03-18 07:53 bastien Note Added: 0006207 2023-03-18 07:53 bastien Issue Monitored: bastien 2023-03-20 13:20 wlerch Note Added: 0006208 2023-03-20 13:38 bastien Note Added: 0006209 2023-03-20 23:06 steffen Note Added: 0006211 2023-03-21 12:01 hvd Note Added: 0006212 2023-03-21 23:09 sam_james Note Added: 0006215 2023-03-21 23:33 steffen Note Added: 0006216 2023-03-22 09:42 bastien Note Added: 0006217 2023-03-22 21:56 steffen Note Added: 0006227 2023-03-30 15:20 eblake Note Added: 0006238 2023-03-30 15:22 eblake Interp Status => --- 2023-03-30 15:22 eblake Final Accepted Text => see https://austingroupbugs.net/view.php?id=1641#c6238 2023-03-30 15:22 eblake Status New => Resolved 2023-03-30 15:22 eblake Resolution Open => Accepted As Marked 2023-03-30 15:22 eblake Tag Attached: issue8 2023-04-03 16:31 eblake Status Resolved => Under Review 2023-04-03 16:31 eblake Resolution Accepted As Marked => Reopened 2023-04-03 16:36 eblake Note Added: 0006249 2023-04-03 22:42 steffen Note Added: 0006253 2023-04-03 22:44 steffen Note Added: 0006254 2023-04-06 15:42 eblake Note Added: 0006255 2023-04-06 15:43 eblake Interp Status --- => Pending 2023-04-06 15:43 eblake Final Accepted Text see https://austingroupbugs.net/view.php?id=1641#c6238 => see https://austingroupbugs.net/view.php?id=1641#c6255 2023-04-06 15:43 eblake Status Under Review => Interpretation Required 2023-04-06 15:43 eblake Resolution Reopened => Accepted As Marked 2023-04-06 15:44 eblake Tag Attached: tc3-2008 2023-04-06 15:44 eblake Tag Detached: issue8 2023-04-06 19:24 eblake Note Added: 0006257 ======================================================================
