7536 – ctfeAdrOnStack triggered

The code is a simplified version of code that used to work in dmd 2.055. I just tried it with 2.058 and received
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dmd: interpret.c:100: void CtfeStack::setValue(VarDeclaration*, Expression*): Assertion `v->ctfeAdrOnStack >= 0 && v->ctfeAdrOnStack < stackPointer()' failed.
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import std.conv;
// Create a string that unrolls the given expression N times replacing the
// idx char ('i' by default) with the loop number in the expression each time
string unroll(size_t N, size_t i = 0)(string expr, char idx='i') {
 static if (i < N) {
 string subs_expr;
 foreach (c; expr) {
 if (c==idx) { 
 subs_expr ~= to!string(i); 
 } else {
 subs_expr ~= c;
 }
 }
 return subs_expr ~ "\n" ~ unroll!(N,i+1)(expr,idx);
 }
 return "";
}
struct VectorT(T, int N)
{
 T[N] values_;
 // triggers CTFE error
 bool opEquals(const ref VectorT!(T, N) _rhs) const {
 const string expr = "if(values_[z]!=_rhs.values_[z]) return 0;";
 mixin( unroll!(N)(expr,'z') );
 return 1;
 }
}
void main(string[] args)
{
 alias VectorT!(double,3) Vec3; // triggers CTFE error
}

Commit pushed to master at https://github.com/D-Programming-Language/dmd
https://github.com/D-Programming-Language/dmd/commit/be33306a36507c5d111c292e973569dc2ef5e093
7536 ctfeAdrOnStack triggered
Fix issue 7536 - ctfeAdrOnStack triggered.

For D1, too. https://github.com/D-Programming-Language/dmd/pull/751