https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84930
Bug ID: 84930
Summary: Brace-closed initialization of cstring
(i.e."abcdefghi") to coresponding aggregate types
fails in certain situation
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hotguest1 at hotmail dot com
Target Milestone: ---
We can do this in both GCC and clang
std::array<std::array<char, 10>, 2> arr_from_cstr1{{
{{"abcdefghi"}}, {{"abcdefghi"}}
}};
std::array<const char[10], 2> arr_from_cstr2{{
{"abcdefghi"}, {"abcdefghi"}
}};
std::vector<std::array<char, 10> > vec_from_direct{{
{{ 'a','b','c','d','e','f','g','h','i','\0' }},
{{ 'a','b','c','d','e','f','g','h','i','\0' }}
}};
std::vector vec_from_ctor{{
std::array<char, 10>{ {"abcdefghi"} },
std::array<char, 10>{ {"abcdefghi"} }
}};
We can't do this in GCC but can do in clang
std::vector<std::array<char,10> > vec_from_ctr1{{
{{"abcdefghi"}}, {{"abcdefghi"}}
}};
struct A {
std::array<char, 10> x;
A(std::array<char, 10> arr) : x(arr) {}
};
A struct_from_ctr1{ {{"abcdefghi"}} };
You may see the error details in CE (tested with gcc 7.3):
https://godbolt.org/g/zV6dHd
I'm sorry that I can't describe the scenario good enough.
