Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324. The idea is to separate the notion of const from 'this variable can always be replaced with its initializer' in the frontend. To do that, I introduced Declaration::isSameAsInitializer, which is overridden in VarDeclaration to return false for constants that have a struct literal initializer. So {{{ const S s = S(5); void foo() { auto ps = &s; } // is no longer replaced by void foo() { auto ps = &(S(5)); } }}} To make taking the address of a struct constant with a struct-initializer outside of function scope possible, I made sure that AddrExp::optimize doesn't try to run the argument's optimization with WANTinterpret - that'd again replace the constant with a struct literal temporary.

#ifndef __LDC_IR_IRSYMBOL_H__
#define __LDC_IR_IRSYMBOL_H__

#include "ir/ir.h"

/// Base class for all symbols.
class IrSymbol
{
public:
    ///
    IrSymbol(Ir* ir) : ir(ir) {}

    /// Migrate symbols to current module if necessary.
    virtual void migrate() = 0;

protected:
    ///
    Ir* ir;
};

#endif