[PATCH] D136554: Implement CWG2631
Corentin Jabot via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Thu Dec 8 12:34:46 PST 2022
cor3ntin reopened this revision.
cor3ntin added a comment.
This revision is now accepted and ready to land.
In D136554#3982161 <https://reviews.llvm.org/D136554#3982161>, @aeubanks wrote:
> the following now produces a link error:
>
> $ cat /tmp/a.cc
> #include <array>
> #include <map>
>
> struct S {
> std::map<int, int> a;
> };
>
> using T = std::array<S, 20>;
>
> class C {
> T t{};
> };
>
> int main() {
> C c;
> }
> $ ./build/rel/bin/clang++ -o /dev/null /tmp/a.cc -stdlib=libc++ -fuse-ld=lld
> ld.lld: error: undefined hidden symbol: std::__2::map<int, int, std::__2::less<int>, std::__2::allocator<std::__2::pair<int const, int>>>::map[abi:v160000]()
> >>> referenced by a.cc
> >>> /tmp/a-042a0e.o:(C::C())
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>
> using a ToT libc++
>
> is this expected?
Repository:
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https://reviews.llvm.org/D136554/new/
https://reviews.llvm.org/D136554
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