[Bug c++/115139] [14 Regression] Enum inside variadic template class can't define one of self with usage another value from this enum
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115139 --- Comment #5 from Pavel --- Thank you for the fix!
[Bug c++/115139] [14 Regression] Enum inside variadic template class can't define one of self with usage another value from this enum
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115139 Patrick Palka changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #4 from Patrick Palka --- Fixed for GCC 14.2, thanks for the bug report.
[Bug c++/115139] [14 Regression] Enum inside variadic template class can't define one of self with usage another value from this enum
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115139 --- Comment #3 from GCC Commits --- The releases/gcc-14 branch has been updated by Patrick Palka : https://gcc.gnu.org/g:caf43cc9e5c0b3265b55e5a0dc77fc55e9618c77 commit r14-10226-gcaf43cc9e5c0b3265b55e5a0dc77fc55e9618c77 Author: Patrick Palka Date: Tue May 21 15:54:10 2024 -0400 c++: folding non-dep enumerator from current inst [PR115139] After the tsubst_copy removal r14-4796-g3e3d73ed5e85e7 GCC 14 ICEs during fold_non_dependent_expr for 'e1 | e2' below ultimately because we no longer exit early when substituting the CONST_DECLs for e1 and e2 with args=NULL_TREE and instead proceed to substitute the class context A (also with args=NULL_TREE) which ends up ICEing from tsubst_pack_expansion (due to processing_template_decl being cleared). Incidentally, the ICE went away on trunk ever since the tsubst_aggr_type removal r15-123-gf04dc89a991ddc since it changed the CONST_DECL case of tsubst_expr to use tsubst to substitute the context, which short circuits for empty args and so avoids the ICE. This patch fixes this ICE for GCC 14 by narrowly restoring the early exit for empty args that would've happened in tsubst_copy when substituting an enumerator CONST_DECL. We might as well apply this to trunk too, as a small optimization. PR c++/115139 gcc/cp/ChangeLog: * pt.cc (tsubst_expr) : Exit early if args is empty. gcc/testsuite/ChangeLog: * g++.dg/template/non-dependent33.C: New test. Reviewed-by: Marek Polacek Reviewed-by: Jason Merrill (cherry picked from commit f0c0bced62b9c728ed1e672747aa234d918da22c)
[Bug c++/115139] [14 Regression] Enum inside variadic template class can't define one of self with usage another value from this enum
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115139 --- Comment #2 from GCC Commits --- The master branch has been updated by Patrick Palka : https://gcc.gnu.org/g:f0c0bced62b9c728ed1e672747aa234d918da22c commit r15-759-gf0c0bced62b9c728ed1e672747aa234d918da22c Author: Patrick Palka Date: Tue May 21 15:54:10 2024 -0400 c++: folding non-dep enumerator from current inst [PR115139] After the tsubst_copy removal r14-4796-g3e3d73ed5e85e7 GCC 14 ICEs during fold_non_dependent_expr for 'e1 | e2' below ultimately because we no longer exit early when substituting the CONST_DECLs for e1 and e2 with args=NULL_TREE and instead proceed to substitute the class context A (also with args=NULL_TREE) which ends up ICEing from tsubst_pack_expansion (due to processing_template_decl being cleared). Incidentally, the ICE went away on trunk ever since the tsubst_aggr_type removal r15-123-gf04dc89a991ddc since it changed the CONST_DECL case of tsubst_expr to use tsubst to substitute the context, which short circuits for empty args and so avoids the ICE. This patch fixes this ICE for GCC 14 by narrowly restoring the early exit for empty args that would've happened in tsubst_copy when substituting an enumerator CONST_DECL. We might as well apply this to trunk too, as a small optimization. PR c++/115139 gcc/cp/ChangeLog: * pt.cc (tsubst_expr) : Exit early if args is empty. gcc/testsuite/ChangeLog: * g++.dg/template/non-dependent33.C: New test. Reviewed-by: Marek Polacek Reviewed-by: Jason Merrill
[Bug c++/115139] [14 Regression] Enum inside variadic template class can't define one of self with usage another value from this enum
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115139 Patrick Palka changed: What|Removed |Added Target Milestone|--- |14.2 Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org Ever confirmed|0 |1 Last reconfirmed||2024-05-17 Status|UNCONFIRMED |ASSIGNED Keywords||ice-on-valid-code Summary|Enum inside variadic|[14 Regression] Enum inside |template class can't define |variadic template class |one of self with usage |can't define one of self |another value from this |with usage another value |enum|from this enum CC||ppalka at gcc dot gnu.org --- Comment #1 from Patrick Palka --- Confirmed, started with r14-4796-g3e3d73ed5e85e7. Interestingly r15-123-gf04dc89a991ddc made us accept this testcase on trunk, so this is a 14 regression only.
