diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/cpp1z/decomp50.C')
-rw-r--r-- | gcc/testsuite/g++.dg/cpp1z/decomp50.C | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp1z/decomp50.C b/gcc/testsuite/g++.dg/cpp1z/decomp50.C new file mode 100644 index 00000000000..5400a826948 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp1z/decomp50.C @@ -0,0 +1,51 @@ +// PR c++/92106 - ICE with structured bindings and -Wreturn-local-addr. +// { dg-do compile { target c++17 } } + +template <typename> struct B; +template <typename _Tp> struct B<_Tp *> { typedef _Tp& reference; }; +struct C { + template <typename _Up> using rebind = _Up *; +}; +template <typename _Iterator, typename> class D { +public: + typename B<_Iterator>::reference operator*(); + void operator++(); +}; + +template <typename _Iterator, typename _Container> +bool operator!=(D<_Iterator, _Container>, D<_Iterator, _Container>); +template <typename _Tp> class F { +public: + typedef _Tp value_type; +}; + +template <typename _Alloc> struct G { + template <typename _Tp> struct H { using type = C::rebind<_Tp>; }; + using const_pointer = typename H<typename _Alloc::value_type>::type; +}; +template <typename _Tp, typename _Alloc = F<_Tp>> class I { + typedef D<typename G<_Alloc>::const_pointer, int> const_iterator; + +public: + const_iterator begin(); + const_iterator end(); +}; + +struct A { + struct J { + int name; + int value; + }; + I<J> members; + template <typename Key> const int *find(Key) { + for (const auto &[name, value] : members) + // See <https://gcc.gnu.org/ml/gcc-patches/2019-10/msg01107.html> + // for why we don't warn here. + return &value; // { dg-bogus "address of local variable" } + return nullptr; + } +}; +int main() { + A a; + a.find(""); +} |