Re: [Boost-users] fatal error C1001 with VS2010, boost 1.49, and shared_ptr.hpp

On Mon, Apr 30, 2012 at 11:56:26AM -0600, Phillip Hellewell wrote:

On Mon, Apr 30, 2012 at 11:14 AM, Phillip Hellewell wrote:

...

Good news.  Luckily I was able to pinpoint the exact line of code causing VS to crash, and two different workarounds:

Crashes VS:        return Foo_ptr(new Foo());

Workaround 1:        return boost::shared_ptr<Foo>(new Foo());

Workaround 2:        Foo_ptr ret(new Foo());        return ret;

Oops, I didn't even notice this but the return type on my function is Foo_const_ptr (boost::shared_ptr<const Foo>), not Foo_ptr.

So this is the right fix: return Foo_const_ptr(new Foo());

I guess VS gets all flustered when: 1. Converting an r-value shared_ptr to a non-const object, to a shared_ptr to a const object, 2. when typedefs are involved, 3. in Debug x64 (other configurations weren't crashing).

There must be some other factors too because when I wrote up a sample 10-line program to illustrate the problem, it didn't crash.

Please file a bug over at Connect [1]. ICEs are never good, especially as this one seems to occur on reasonably well-formed code. [1] http://connect.microsoft.com/VisualStudio -- Lars Viklund | zao@acc.umu.se