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_CONF_CONFIGFILE_H
#define LDC_CONF_CONFIGFILE_H

#include <vector>
#include <string>

namespace libconfig
{
    class Config;
}

class ConfigFile
{
public:
    typedef std::vector<const char*>    s_vector;
    typedef s_vector::iterator          s_iterator;

public:
    ConfigFile();
    ~ConfigFile();

    bool read(const char* argv0, void* mainAddr, const char* filename);

    s_iterator switches_begin()   { return switches.begin(); }
    s_iterator switches_end()     { return switches.end(); }

    const std::string& path()     { return pathstr; }

private:
    bool locate(llvm::sys::Path& path, const char* argv0, void* mainAddr, const char* filename);

    libconfig::Config* cfg;
    std::string pathstr;

    s_vector switches;
};

#endif // LDC_CONF_CONFIGFILE_H