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Crash when SAFE_RELEASE is called on IMMDeviceEnumerator


Crash when SAFE_RELEASE is called on IMMDeviceEnumerator

By : user2956287
Date : November 22 2020, 10:54 AM
will be helpful for those in need Your code as posted does not crash, not even without unregistering the callback. Checked by copy-pasting what you have and adding what you didn't. The IUnknown methods are missing, but pretty unlikely to have anything to do with it. Just make sure that your Release() function doesn't get called too often, delete this only works once.
There are plenty of reasons for code like this to crash, heap corruption is every C++ programmer's nasty loud neighbor and he is forever most likely to show up at the most inopportune moment. With program exit being a very likely time to get that neighbor to turn the dial to eleven, that's when you touch heap sections you haven't needed for a while. Very hard to debug, the corruption happened much earlier.
code :


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Method called on crash iOS app

Method called on crash iOS app


By : Cameron Cantwell
Date : March 29 2020, 07:55 AM
Hope this helps I'm not sure that applicationWillTerminate: is trigged when crashing.
I call during didFinishLaunchingWithOptions: :
code :
NSSetUncaughtExceptionHandler(&uncaughtExceptionHandler);
void uncaughtExceptionHandler(NSException *exception) {
    NSLog(@"CRASH: %@", exception);
    NSLog(@"Stack Trace: %@", [exception callStackSymbols]);
    // Internal error reporting
}
SQLLITEDATABASE crash-oncreate not called ? db.getreadabledatabase/getwritabledatabase crash

SQLLITEDATABASE crash-oncreate not called ? db.getreadabledatabase/getwritabledatabase crash


By : mostafa_a
Date : March 29 2020, 07:55 AM
This might help you Your create statement is wrong, you need to add the INTEGER type to the _id, try with this:
code :
CREATE TABLE  record (_id integer primary key autoincrement,TIME text,ITEM text,TYPE text,AMT text)
COM Objects C# Casting MMDeviceEnumerator to IMMDeviceEnumerator InvalidCastException

COM Objects C# Casting MMDeviceEnumerator to IMMDeviceEnumerator InvalidCastException


By : Hannah Russwurm
Date : March 29 2020, 07:55 AM
Any of those help That's not very close, you are creating a .NET class. Letting the CLR know that this is actually a COM declaration and implemented elsewhere requires using the [ComImport] directive. I'll give you the minimum required declarations:
code :
[ComImport]
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IMMDeviceEnumerator
{
    // etc..
}

public static class MMDeviceEnumeratorFactory {
    private static readonly Guid MMDeviceEnumerator = new Guid("BCDE0395-E52F-467C-8E3D-C4579291692E");

    public static IMMDeviceEnumerator CreateInstance() {
        var type = Type.GetTypeFromCLSID(MMDeviceEnumerator);
        return (IMMDeviceEnumerator)Activator.CreateInstance(type);
    }
}
IMMDeviceEnumerator deviceEnumerator = MMDeviceEnumeratorFactory.CreateInstance();
Dealloc called without viewDidLoad being called (crash on removing KVO observer)

Dealloc called without viewDidLoad being called (crash on removing KVO observer)


By : Jens Hult
Date : March 29 2020, 07:55 AM
This might help you May have found an even better solution. I add the observer in the method initWithCoder:(NSCoder *)aDecoder, which is called when the parent UITabController is loaded. I am using the storyboard which may be why I need to call override this method instead of regular init. Doing this now without the need for a BOOL flag or @try and no crashing.
code :
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    if (self = [super initWithCoder:aDecoder]) {
        [anObject addObserver:self forKeyPath:aKeyPath options:0 context:NULL];
    }
    return self;
}
difference SAFE_RELEASE(), SAFE_DELETE()

difference SAFE_RELEASE(), SAFE_DELETE()


By : Anya
Date : March 29 2020, 07:55 AM
To fix this issue I'm newbie in programming. , If you are looking for definition you will find
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