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* [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations @ 2023-04-25 10:05 jlame646 at gmail dot com 2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: jlame646 at gmail dot com @ 2023-04-25 10:05 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 Bug ID: 109621 Summary: GCC accepts invalid program with multiple using declarations Product: gcc Version: 13.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jlame646 at gmail dot com Target Milestone: --- The following invalid program(afaik) is accepted by gcc and msvc. https://godbolt.org/z/1Tsx54ro5 ``` namespace X { struct type {}; } namespace Y { using type = int; } using X::type; using Y::type; int main() { auto i = sizeof(type); //gcc and msvc accepts this but clang rejects this } ``` ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com @ 2023-04-25 15:29 ` pinskia at gcc dot gnu.org 2023-04-25 17:24 ` redi at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-04-25 15:29 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|GCC accepts invalid program |[10/11/12/13/14 Regression] |with multiple using |GCC accepts invalid program |declarations |with multiple using | |declarations Known to fail| |4.4.7 Target Milestone|--- |10.5 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Known to work| |4.1.2 Last reconfirmed| |2023-04-25 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- C++98 version which shows it is a regression and it started to fail between GCC 4.1.2 and 4.4.7: ``` namespace X { struct type {}; } namespace Y { typedef int type; } using Y::type; using X::type; int i = sizeof(type); //gcc and msvc accepts this but clang rejects this ``` ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com 2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org @ 2023-04-25 17:24 ` redi at gcc dot gnu.org 2023-04-25 17:25 ` redi at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: redi at gcc dot gnu.org @ 2023-04-25 17:24 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 --- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Possibly started with re PR c++/31749 (ICE with invalid redeclaration of builtin) PR c++/31749 gcc/cp/ * name-lookup.c (do_nonmember_using_decl): Shift implicit type declarations into appropriate slots for comparison. Fix type comparison. gcc/testsuite/ * g++.dg/lookup/builtin3.C: New test. * g++.dg/lookup/builtin4.C: New test. * g++.dg/lookup/using19.C: New test. From-SVN: r127600 Or something before that and after r127526. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com 2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org 2023-04-25 17:24 ` redi at gcc dot gnu.org @ 2023-04-25 17:25 ` redi at gcc dot gnu.org 2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org 2024-01-12 10:36 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: redi at gcc dot gnu.org @ 2023-04-25 17:25 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 --- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- Which makes it a regression in 4.3.0 and later. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com ` (2 preceding siblings ...) 2023-04-25 17:25 ` redi at gcc dot gnu.org @ 2023-07-07 10:45 ` rguenth at gcc dot gnu.org 2024-01-12 10:36 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-07-07 10:45 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|10.5 |11.5 --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- GCC 10 branch is being closed. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com ` (3 preceding siblings ...) 2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org @ 2024-01-12 10:36 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2024-01-12 10:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P2 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-01-12 10:36 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com 2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org 2023-04-25 17:24 ` redi at gcc dot gnu.org 2023-04-25 17:25 ` redi at gcc dot gnu.org 2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org 2024-01-12 10:36 ` rguenth at gcc dot gnu.org
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