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Feature Requests

Detect unhandled exceptions

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T O P I C R E V I E W
znakeeye	Posted - May 09 2008 : 10:07:50 AM A lacking feature in C++ is the ability to detect when exceptions are not handled. foo(bool x) { if (x) throw("Error"); } foo(true); // The compiler will not see this problem! Why not add a VAX-feature where you list such possible errors? You can simply walk up the call-trees and see if any thrown objects might cause an "Unhandled exception". A "Fix errors"-button would also be convenient, where the necessary code is added: foo(true); // I press "Fix" and it becomes... try { foo(true); } catch(const char *e) { // TODO: Handle exception }
3 L A T E S T R E P L I E S (Newest First)
feline	Posted - May 10 2008 : 09:29:45 AM We have no current plans to get involved in static analysis of code.
znakeeye	Posted - May 09 2008 : 4:44:48 PM It should analyze when the user tells it to do so. Just as it finds references when we tell it to :) The more errors you can find at syntactical level, the better! Also, even if you have an #ifdef, like yours, you should indeed have a catch-block (inside an #ifdef too, of course). Hence, those defines don't affect this. If there is a "throw" there should always be a corresponding "catch"! (And no, I don't use such tools. No need to, since VAX makes me code like a true master :P)
feline	Posted - May 09 2008 : 11:07:55 AM An interesting idea, but I don't see how VA could hope to do this. You need to know how the code will be compiled, since you need to allow for conditional statements: foo(bool x) { if (x) #ifdef USING_EXCEPTIONS throw("Error"); #else return -1; #endif } Also when does VA analyse the code? It cannot be analysed while you are editing it, since you have not finished writing it. Have you looked into static analysis tools?

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