I've been trying to figure this one out for a while so sorry if I sound
frustrated...
>From my javascript code I have the following:
this.props().appViewModel.currentUser().data.*createUserCheckinAsync*(this.
currentBusiness().data, null);
this.currentBusiness().data.*readProductsAsync*(0, 20, "");
Which eventually calls into the following C++ code:
void Business::*readProductsAsync*(unsigned int index, unsigned int
count, std::string name)
{
printf("readProductsAsync - entered\n");
printf("readProductsAsync - attempting shared_from_this\n");
this->*shared_from_this*();
...
Which eventually compiles out (with -O0 and -g4) to
(_printf(91357,$vararg_buffer)|0); //@line 134
"C:\Users\ricky\Documents\Projects\SCI.Ranking.Client.Engine\ViewModel\Business.cpp"
(_printf(91386,$vararg_buffer1)|0); //@line 135
"C:\Users\ricky\Documents\Projects\SCI.Ranking.Client.Engine\ViewModel\Business.cpp"
$15 = ((($14)) + 4|0); //@line 136
"C:\Users\ricky\Documents\Projects\SCI.Ranking.Client.Engine\ViewModel\Business.cpp"
__ZNSt3__123enable_shared_from_thisIN9threadily12ThreadObjectEE16
*shared_from_this*Ev($3,$15); //@line 136
"C:\Users\ricky\Documents\Projects\SCI.Ranking.Client.Engine\ViewModel\Business.cpp"
When it actually attempts to run the this->shared_from_this() I get a
failure which is just gibberish to me
Compiled code throwing an exception, 5489120,17072,2523
can_catch on 5489120
Resuming exception 5489120,5489120
Here's the kicker... In that first block of code, if I comment out the line
to execute *createUserCheckingAsync* and only run *readProductsAsync*,
everything works fine and there are no exceptions. So the next question
would be what's in createUserCheckinAsync? Well I managed to clean out all
the code until it looks like this...
void User::createUserCheckinAsync(std::shared_ptr<Business> business,
std::shared_ptr<Product> product)
{
this->isUserCheckinPending->set(true);
this->isUserCheckinPending->set(false);
return;
}
I guess my questions here are:
1. Why would a call to createUserCheckinAsync interfere with the call to
readProductsAsync? There are no objects being destroyed between the two...
so I'm not sure what the difference is.
2. Why would this->shared_from_this ever throw an exception?
Now just as a sanity check, I did create a Visual Studio C++ Unit test and
this same scenario succeeds... So the only thing I can think of is attempt
to rewrite the tests in clang and see if they fail there.
Anyways, any help is massively appreciated in figuring out how to debug
this issue! Is it possibly a corruption of the stack that doesn't show up
in MSBuild?
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