[OT] unbelievable: #ifdef _OTHER_LIB_H

[ketmar via Digitalmars-d]

On Thu, 27 Nov 2014 03:51:58 +0000
"Adam D. Ruppe via Digitalmars-d" <digitalmars-d at puremagic.com> wrote:

> BTW @nogc should have an escape hatch at least for assert(0, 
> allocate_a_message). The program is dying anyway, at least let me 
> conveniently format a descriptive error message.
hey, but we can hack it!

  import std.traits;

  auto assumeNoGC(T) (T t) if (isFunctionPointer!T || isDelegate!T) {
    enum attrs = functionAttributes!T | FunctionAttribute.nogc;
    return cast(SetFunctionAttributes!(T, functionLinkage!T, attrs)) t;
  }

  void test () @nogc {
    assert(0, assumeNoGC(() { import std.format : format; return "%s".format("hi")~" there!"; })()); }

  void main () @nogc {
    test();
  }
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