view tests/mini/vararg4.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 vararg4;
import tango.core.Vararg;
extern(C) int printf(char*, ...);

void vafunc(...)
{
    foreach(i,v; _arguments) {
        if (typeid(byte) == v) {
            printf("byte(%d)\n", va_arg!(byte)(_argptr));
        }
        else if (typeid(short) == v) {
            printf("short(%d)\n", va_arg!(short)(_argptr));
        }
        else if (typeid(int) == v) {
            printf("int(%d)\n", va_arg!(int)(_argptr));
        }
        else if (typeid(long) == v) {
            printf("long(%ld)\n", va_arg!(long)(_argptr));
        }
        else if (typeid(float) == v) {
            printf("float(%f)\n", va_arg!(float)(_argptr));
        }
        else if (typeid(double) == v) {
            printf("double(%f)\n", va_arg!(double)(_argptr));
        }
        else if (typeid(real) == v) {
            printf("real(%f)\n", va_arg!(real)(_argptr));
        }
        else
        assert(0, "unsupported type");
    }
}

void main()
{
    vafunc(byte.max,short.max,1,2,3,4L,5.0f,6.0,cast(real)7);
}