view runtime/internal/ldc/vararg.d @ 1126:899a2d90645b

Fix some issues with fawzi's patch. - It now actually compiles: - import stdc.stdio for string formatting functions) - remove extra '{' - Use snprintf() instead of sprintf(). - Use return value from snprintf instead of strlen(). - Don't print the filename in Exception.writeOut() if it has zero length and the line number is 0 (It would previously only skip these if the filename was null, but not if it was a different empty string) - Ignore empty filename + line number 0 in FrameInfo.writeOut() as well.
author Frits van Bommel <fvbommel wxs.nl>
date Wed, 18 Mar 2009 15:33:19 +0100
parents d8a1481eaa0c
children
line wrap: on
line source

/*
 * This module holds the implementation of special vararg templates for D style var args.
 *
 * Provides the functions tango.core.Vararg expects to be present!
 */

module ldc.Vararg;

// Check for the right compiler
version(LDC)
{
    // OK
}
else
{
    static assert(false, "This module is only valid for LDC");
}

alias void* va_list;

void va_start(T) ( out va_list ap, inout T parmn )
{
    // not needed !
}

T va_arg(T)(ref va_list vp)
{
    T* arg = cast(T*) vp;
    // ldc always aligns to size_t.sizeof in vararg lists
    vp = cast(va_list) ( cast(void*) vp + ( ( T.sizeof + size_t.sizeof - 1 ) & ~( size_t.sizeof - 1 ) ) );
    return *arg;
}

void va_end( va_list ap )
{
    // not needed !
}

void va_copy( out va_list dst, va_list src )
{
    // seems pretty useless !
    dst = src;
}