Make "`aa[key]`" use the same runtime call as "`key in aa`". The runtime calls these were using were different, but with equivalent definitions. With `ldc -O3`, the following functions now all compile to the exact same code: {{{ int[int] y; void foo(int x) { if (x in y) { auto z = x in y; sink(*z); } } void bar(int x) { if (x in y) { sink(y[x]); } } void baz(int x) { if (auto p = x in y) { sink(*p); } } }}}

module bug10;
extern(C) int printf(char*, ...);

class C
{
    char[] msg;

    this()
    {
    }
    this(char[] msg)
    {
        this.msg = msg;
    }
}

void main()
{
    auto c = new C();
    c.msg = "world";
    auto b = new C("hello");
    printf("%.*s\n", b.msg.length, b.msg.ptr);
    printf("%.*s\n", c.msg.length, c.msg.ptr);
}