[Bug c++/108347] Incorrect error: ambiguous template instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108347 Patrick Palka changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Target Milestone|--- |14.0 Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org Resolution|--- |FIXED CC||ppalka at gcc dot gnu.org --- Comment #5 from Patrick Palka --- Fixed for GCC 14, thanks for the bug report.
[Bug c++/108347] Incorrect error: ambiguous template instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108347 --- Comment #4 from CVS Commits --- The master branch has been updated by Patrick Palka : https://gcc.gnu.org/g:a6ac1fc64c3caed19da65c2e6b12f8ddaf551231 commit r14-4110-ga6ac1fc64c3caed19da65c2e6b12f8ddaf551231 Author: Patrick Palka Date: Mon Sep 18 14:41:07 2023 -0400 c++: unifying identical tmpls from current inst [PR108347] Here more_specialized_partial_spec wrongly considers the two partial specializations to be unordered ultimately because unify for identical parm=arg=A::C returns failure due to C being dependent. This patch fixes this by relaxing unify's early-exit identity test to also accept dependent decls; we can't deduce anything further from them anyway. In passing this patch removes the CONST_DECL case of unify: we should never see the CONST_DECL version of a template parameter here, and for other CONST_DECLs (such as enumerators) it seems we can rely on them to already have been folded to their DECL_INITIAL. PR c++/108347 gcc/cp/ChangeLog: * pt.cc (unify): Return unify_success for identical dependent DECL_P 'arg' and 'parm'. : Remove handling. gcc/testsuite/ChangeLog: * g++.dg/template/ttp41.C: New test.
[Bug c++/108347] Incorrect error: ambiguous template instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108347 --- Comment #3 from Andrew Pinski --- (In reply to Andrew Pinski from comment #2) > Created attachment 54223 [details] > testcase that removes the C++17isms and convert it over to C++11 The reason why I did this is because I wanted to see if older versions of GCC rejected this code and they do in a similar fashion. (MSVC still ICEs).
[Bug c++/108347] Incorrect error: ambiguous template instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108347 --- Comment #2 from Andrew Pinski --- Created attachment 54223 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54223=edit testcase that removes the C++17isms and convert it over to C++11
[Bug c++/108347] Incorrect error: ambiguous template instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108347 --- Comment #1 from Andrew Pinski --- Well MSVC has an internal compiler error with this code.
