view tests/minicomplex/vararg2.d @ 1499:df11cdec45a2

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.
author Christian Kamm <kamm incasoftware de>
date Sun, 14 Jun 2009 19:49:58 +0200
parents 1bb99290e03a
children
line wrap: on
line source

module tangotests.vararg2;

extern(C) int printf(char*, ...);

import tango.core.Vararg;

void main()
{
    func(0xf00, 1, " ", 2, " ", 3, "\n", 0.3, "\n");
}

void func(int foo, ...)
{
    foreach(t; _arguments)
    {
        if (t == typeid(char[]))
        {
            char[] str = va_arg!(char[])(_argptr);
            printf("%.*s", str.length, str.ptr);
        }
        else if (t == typeid(int))
        {
            printf("%d", va_arg!(int)(_argptr));
        }
        else if (t == typeid(float))
        {
            printf("%f", va_arg!(float)(_argptr));
        }
        else if (t == typeid(double))
        {
            printf("%f", va_arg!(double)(_argptr));
        }
        else if (t == typeid(real))
        {
            printf("%f", va_arg!(real)(_argptr));
        }
        else
        {
            assert(0, "not int");
        }
    }
}