Giving more details as not sure what the deal here is. The idea of this
project is to share my C++ backend across Web, iOS and Android. I've done
the latter two before so I figured I should start with web. This is
effectively a library so I'm building it with the following arguments into
emcc: -O0 -g4 -s MODULARIZE=1 -s NO_EXIT_RUNTIME=1 -s EXCEPTION_DEBUG=1
The structure of this code is
app: App
- createdBusiness: Business
- products: std::vector<Product>
- user: User
- checkins: std::vector<Checkins>
The scenario is:
1. The user creates a business - app.createBusinessAsync();
2. Checks into the business -
app.user.createCheckinAsync(app.createdBusiness)
3. Reads the product for that business -
app.createdBusiness.readProductsAsync()
4. Creates a new product for that business -
app.createdBusiness.createProductAsync(name)
At step 3 I am currently getting a *bad_weak_ptr* exception on the object
business when calling *this->shared_from_this()*.
*If I remove step 2, I no longer get a bad_weak_ptr at step 3.*
Here's where things get weird... I added two methods to verify it wasn't
createCheckinAsync causing some weird pointer issue
- app.businessTestAsync()
- user.businessTestAsync()
Both of which look like this (one for App one for User though)
void App::businessTestAsync(std::shared_ptr<Business> business)
{
printf("App::businessTestAsync - Entered\n");
business->shared_from_this();
printf(".use_count(): %ld \n", business->shared_from_this().use_count
());
printf("App::businessTestAsync - shared_from_this\n");
printf("App::businessTestAsync - Exited\n");
}
Replacing step 2 with calling either of these methods also causes a
bad_weak_ptr when attempting to run any method on the Business object.
I have a printf in the destructor of Business so I'm fairly sure it's not
being destroyed...
Can I provide any other information to help figure out the next steps to
debugging? I'm also willing to zip up the contents of my project and share
it if needed.
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