Bug 15827 – std.variant.Variant can not be initialized with some struct

Test: -------------------- import std.variant; struct Foo { Variant v; this(Foo v) {} } void main() { Variant v = Foo.init; } -------------------- Output: -------------------- ../import/std/variant.d(571): Error: variable std.variant.VariantN!32LU.VariantN.opAssign!(Foo).opAssign.rhs has scoped destruction, cannot build closure -------------------- The error message is referring to line [std.variant:571] but is triggered by line [std.variant:615]. Foo must have both member of type Variant and constructor accepting Foo in order to produce the error. It seems to be related to Issue 5730. [std.variant:571]: https://github.com/D-Programming-Language/phobos/blob/708c5d8e6ddd9245f793e4b8761382672225f271/std/variant.d#L571 [std.variant:615]: https://github.com/D-Programming-Language/phobos/blob/708c5d8e6ddd9245f793e4b8761382672225f271/std/variant.d#L615 [Issue 5730]: https://issues.dlang.org/show_bug.cgi?id=5730

Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/f9aa6f6efc503aacf704dbd677f63b29e37cb63e Fix Issue 15827. Avoid explicit use of parameter in delegate. https://github.com/D-Programming-Language/phobos/commit/2f5a8bb99cc821e69c9fbf9d2d4f5f63c76179a4 Merge pull request #4118 from MaksimZh/fix-15827 Fix Issue 15827 - std.variant.Variant can not be initialized with some struct