view lphobos/std/stdarg.d @ 313:a498b736a0bd trunk

[svn r334] Produce an error for zero-size types instead of segfaulting.
author ChristianK
date Sun, 29 Jun 2008 22:22:37 +0200
parents 5825d48b27d1
children eef8ac26c66c
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/*
 * Placed in public domain.
 * Written by Hauke Duden and Walter Bright
 */

/* This is for use with variable argument lists with extern(D) linkage. */

/* Modified for LLVMDC (LLVM D Compiler) by Tomas Lindquist Olsen, 2007 */

module std.stdarg;

alias void* va_list;

T va_arg(T)(ref va_list vp)
{
    size_t size = T.sizeof > size_t.sizeof ? size_t.sizeof : T.sizeof;
    va_list vptmp = cast(va_list)((cast(size_t)vp + size - 1) &  ~(size - 1));
    vp = vptmp + T.sizeof;
    return *cast(T*)vptmp;
}