[Issue 11835] New: Assert not thrown from contract

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=11835

           Summary: Assert not thrown from contract
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: chalucha at gmail.com


--- Comment #0 from Tomáš Chaloupka <chalucha at gmail.com> 2013-12-27 23:24:57 PST ---
With code like this:

import std.stdio;
import core.exception;
import std.exception;

interface IFoo
{
    void test()
    in
    {
        writeln("IFoo.test");
        assert(false);
    }
}

class Foo : IFoo
{
    abstract void test()
    in
    {
        writeln("Foo.test");
    }
    body{}
}

class Bar : Foo
{
    override void test()
    {
        writeln("Bar.test");
    }
}

unittest
{
    auto bar = new Bar();
    assertThrown!AssertError(bar.test());
}

I expected, that AssertError should be thrown from interface contract, but only
Bar.test is called.

With modification:
class Bar : Foo
{
    override void test()
    in
    {
        writeln("Bar.test");
    }
    body{}
}

Foo.test is called this time (Bar.test is not), but AssertError is still not
thrown so assertThrown fails.

With further modification:
class Foo : IFoo
{
    abstract void test()
    in
    {
        writeln("Foo.test");
        assert(false);
    }
    body{}
}

Output is:
Foo.test
IFoo.test
Bar.test
core.exception.AssertError at source/app.d(45): assertThrown failed: No
AssertError was thrown.

So this time all contracts are called but still no AssertError thrown.

With this modification:
class Bar : Foo
{
    override void test()
    in
    {
        writeln("Bar.test");
        assert(false);
    }
    body{}
}

All contracts are called and AssertError is thrown from Bar.test().
I think that this is a bug related to 6856 but as it seems that even
AssertErrors are somehow "eaten" somewhere, I filled this bug so it can be
checked too.

Tested with DMD 2.064.2 on Gentoo linux

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