crashed application

[Vitaly_iva]

Hi.
My application on Communicator Nokia 9500 has error. The message looks like this
Program closed. Reason code: KERN-EXEC. Reason number: 3.
What should I do?

[wizard_hu_]

In most cases, KERN-EXEC 3 denotes a NULL pointer exception. You should try to check your uninitialized pointers and/or debug your code if it can be executed in the emulator.

[Vitaly_iva]

In most cases, KERN-EXEC 3 denotes a NULL pointer exception. You should try to check your uninitialized pointers and/or debug your code if it can be executed in the emulator.

Thanks.
But the problem is that the code is executed in the Emulator,
while error occurs when the code is executed in the Communicator.
I believed that the error resulted from char* type used.
But having changed void Preview(TInt aFontSize, char* aFmt1, ...) into
void Preview(TInt aFontSize, __e32_va_list aFmt1, ...) the code still runs in the Emulator succesfully, while the same error remains in the Communicator.

[wizard_hu_]

In this case, you should create a logfile, and see where the problem happen.

[Vitaly_iva]

In this case, you should create a logfile, and see where the problem happen.

I'm new in Symbian, so tell me the simpliest way where to create a logfile, as well as the references how to create it?

[SymbianSandy]

1) Simple debug-msg method
User::InfoPrint(_L("Debug")); -->it doesnt work on S60 phones... not sure abt 9500

2) simple file-based method
//at the beginning of function
RFile file;
TBuf8<100>text8;
TBuf<100>text;
TInt fileSize;
file.Replace( CEikonEnv::Static()->FsSession(), _L("C:\\debug.txt"), EFileWrite );
CleanupClosePushL( file );


//where u want to add entry to log
file.Size( fileSize );
file.Seek( ESeekStart, fileSize );
text.Copy(aAddress);
text.Append( _L("\n") );
text8.Copy( text );
file.Write( text8 );

//at the end of function
CleanupStack::PopAndDestroy( &file );

[Vitaly_iva]

1) Simple debug-msg method
User::InfoPrint(_L("Debug")); -->it doesnt work on S60 phones... not sure abt 9500

2) simple file-based method
//at the beginning of function
RFile file;
TBuf8<100>text8;
TBuf<100>text;
TInt fileSize;
file.Replace( CEikonEnv::Static()->FsSession(), _L("C:\\debug.txt"), EFileWrite );
CleanupClosePushL( file );


//where u want to add entry to log
file.Size( fileSize );
file.Seek( ESeekStart, fileSize );
text.Copy(aAddress);
text.Append( _L("\n") );
text8.Copy( text );
file.Write( text8 );

//at the end of function
CleanupStack::PopAndDestroy( &file );

Many thanks I'll try this.