Simply put, once thrown an exception object should continue in flight unless handled explicitly. In practice, this means propagating exceptions should not be swallowed in gratuitous catch(...) blocks. Instead, matching try and catch blocks should have specific catch handlers and allow un-handed exception objects to propagate. If a terminating catch(...) blocks exist then it should end with a throw to re-throw the current exception.Why do this?By allowing exception objects to propagate, a more flexible approach to error handling is made possible (although not required.) Instead of dealing with an error immediately, one can allow the exception to propagate up until sufficient context is available and the choice of exiting or retrying can be made in an informed manner.Unfortunately, this tends to be more of a guideline than a strict rule as applied to the standard library. As such, the following is a list of known problem areas where exceptions are not propagated. Input/Output The destructor ios_base::Init::~Init() swallows all exceptions from flush called on all open streams at termination. All formatted input in basic_istream or formatted output in basic_ostream can be configured to swallow exceptions when exceptions is set to ignore ios_base::badbit. Functions that have been registered with ios_base::register_callback swallow all exceptions when called as part of a callback event. When closing the underlying file, basic_filebuf::close will swallow (non-cancellation) exceptions thrown and return NULL. Thread The constructors of thread that take a callable function argument swallow all exceptions resulting from executing the function argument.
C++
Topic: Exceptions
Explain about exception Neutrality ?
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What is Exceptions in c++ ?
Can we generate a C++ source code from the binary file?
what is Un handled exception(KERNEL32.DLL):0xE06D7363 in the context of exception handling? pls answer to my mail id.in the flg code i got a problem.i want to know the entire steps followed in exception handling in this program.#include <iostream>using namespace std;int main(){ cout << "Start"; try { // start a try block cout << "Inside try block"; cout << "Still inside try block"; throw 78; } catch (double i) { // catch an error cout << "Caught an exception -- value is: "; cout << i << ""; } cout << "End"; return 0;}
How does throwing and catching exceptions differ from using setjmp and longjmp?
what is the difference betwen wait() and delay()?
How can I get around scope problems in a try/catch?
Explain exception specifications with example ?
Explain about standard exceptions with example ?
Explain about try, catch, and throw Statements (C++) ?
Exceptions are hard to ignore, unlike error codes. ?
What are C++ Exception Examples ?
Explain about Unhandled C++ Exceptions ?
Explain about exception Handling Overhead ?
Explain about Mixing C (Structured) and C++ Exceptions ?
Explain about Overview of C++ Exception Handling with example ?
Explain about Implications of Using Exceptions with example ?
Explain about Designing With Exceptions with example ?
Explain about exceptions in Real-Time Systems ?
Explain about exception Handling Philosophies with example ?
Explain about exceptions in an Array-Based Stack ?
How many exceptions in a List-Based Stack ?
What are some ways try / catch / throw can improve software quality?
How do exceptions simplify my function return type and parameter types?
What does it mean that exceptions separate the "good path" (or "happy path") from the "bad path"?
Exception handling seems to make my life more difficult; clearly I'm not the problem, am I??
How can I handle a destructor that fails?
How can I handle a constructor that fails?
How should I handle resources if my constructors may throw exceptions?
What is exception-safe code?
Explain about exception Neutrality ?
Explain how we implement exception handling in C++
Explain terminate() and unexpected() function ?
Exception handling concept ?
Describe the way to handle run time error in C++.
