6792 – [CTFE] ICE with pointer cast of indexed array

struct S{
 int i;
}
static assert({
 {
 void* p;
 p = [S(1)].ptr;
 S s = *(cast(S*)p);// OK
 assert(s.i == 1);
 }
 {
 void*[] ary;
 ary ~= [S(2)].ptr;
 S s = *(cast(S*)ary[0]);// Error: CTFE internal error assigning struct
 assert(s.i == 2);
 }
 {
 void*[string] aa;
 aa["key"] = [S(3)].ptr;
 S s = *(cast(S*)aa["key"]);// Error: CTFE internal error assigning struct
 assert(s.i == 3);
 }
 return true;
}());
The latest dmd built from github cannot compile the above code.

Another case, where it's an lvalue instead of an rvalue:
 {
 void*[7] ary;
 ary[6]= [S(2)].ptr; 
 *(cast(S*)ary[6]) = S(4); //ICE(interpret.c 2965)
 }
The root cause is that type painting of pointers hasn't been considered properly in CTFE.

https://github.com/D-Programming-Language/dmd/commit/3055cc6a8b36a2e00c270b0e48e1d1bd2c931f37
https://github.com/D-Programming-Language/dmd/commit/72e750209b370b66157f320d3517c5816a3951d7