Bug 20938 – Cannot create const arrays mixing immutable and mutable structs with indirections

``` struct Block { int[] ind; } private immutable Block _gen; ref immutable(Block) Genesis() { return _gen; } void main () { Block block; // conv.d(10): Error: cannot implicitly convert expression Genesis() of type immutable(Block) to Block auto a1 = [ Genesis(), block ]; // conv.d(12): Error: cannot implicitly convert expression Genesis() of type immutable(Block) to Block const a2 = [ Genesis(), block ]; // conv.d(14): Error: cannot implicitly convert expression Genesis() of type immutable(Block) to Block const(Block)[] a3 = [ Genesis(), block ]; // conv.d(16): Error: cannot implicitly convert expression Genesis() of type immutable(Block) to Block const(Block)[2] a4 = [ Genesis(), block ]; // conv.d(18): Error: cannot implicitly convert expression block of type Block to immutable(Block) const(Block)[] a5 = [ block, Genesis() ]; } ``` Marking as critical because inference not working is one thing, but the error on `const(Block)[]` is a rejects-valid and the error message is quite confusing.

@Biotronic created dlang/dmd pull request #11292 "Fix issue 20938 - Cannot create const arrays mixing immutable and mutable structs with indirections" fixing this issue: - Fix issue 20938 https://github.com/dlang/dmd/pull/11292

dlang/dmd pull request #11292 "Fix issue 20938 - Cannot create const arrays mixing immutable and mutable structs with indirections" was merged into master: - 6697c5bab0bda54ccaf8e3060b098be23b98931f by Simen Kjærås: Fix issue 20938 - Cannot create const arrays mixing immutable and mutable structs with indirections https://github.com/dlang/dmd/pull/11292