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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94777
// { dg-additional-options "-funittest" }
// { dg-do compile }
void testVariadic(T)(int nargs, ...)
{
import core.stdc.stdarg;
foreach(i; 0 .. nargs)
{
auto arg = va_arg!T(_argptr);
static if (__traits(compiles, arg.value))
{
assert(arg.value == i);
}
else static if (__traits(compiles, arg[0]))
{
foreach (value; arg)
assert(value == i);
}
else
{
assert(arg == T.init);
}
}
}
/******************************************/
struct Postblit
{
static int count = 0;
int value;
this(this) { count++; }
}
unittest
{
auto a0 = Postblit(0);
auto a1 = Postblit(1);
auto a2 = Postblit(2);
testVariadic!Postblit(3, a0, a1, a2); // { dg-error "cannot pass types with postblits or copy constructors as variadic arguments" }
assert(Postblit.count == 3);
}
/******************************************/
struct CopyConstructor
{
static int count = 0;
int value;
this(int v) { this.value = v; }
this(ref typeof(this) other) { count++; this.value = other.value; }
}
unittest
{
auto a0 = CopyConstructor(0);
auto a1 = CopyConstructor(1);
auto a2 = CopyConstructor(2);
testVariadic!CopyConstructor(3, a0, a1, a2); // { dg-error "cannot pass types with postblits or copy constructors as variadic arguments" }
assert(CopyConstructor.count == 3);
}
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