Exception handling in pure C

Question

Possible Duplicate:
C : How do you simulate an 'exception' ?

Hi, I know that exception handling is available in C++ but not in C. But I also read that exception handling is provided from OS side, so isnt there any function for C invoking the same behavior from OS as try catch and throw? Thanks.

Duplicate: [C : How do you simulate an 'exception'?](http://stackoverflow.com/questions/1219438/), [How do I implement exceptions with nestable try-catch-finally statement with messages in C](http://stackoverflow.com/questions/1779189/), [Exception libraries for C (not C++)](http://stackoverflow.com/questions/3581818/), [Exception libraries for C (not C++)](http://stackoverflow.com/questions/1410329/) and related: [How are exceptions implemented under the hood?](http://stackoverflow.com/questions/1995734/), [How to throw an exception in C?](http://stackoverflow.com/questions/2891766/) etc. — dmckee --- ex-moderator kitten, Oct 19 '10 at 15:09
Come on, B.Gen, you're not new here. You know how things work. — dmckee --- ex-moderator kitten, Oct 19 '10 at 15:12

score 7 · Accepted Answer · answered Oct 19 '10 at 15:04

The C language itself has no support for exception handling. However a means of exception handling for C does exist on a platform + compiler specific basis.

In windows for example C programs can use SEH exception handling.

http://www.microsoft.com/msj/0197/Exception/Exception.aspx

I've seen arguments in the past that the C function pair setjmp and longjmp is exception handling in C. I consider it closer to the ejection pattern but it's worth investigating

http://msdn.microsoft.com/en-us/library/aa272905(VS.60).aspx

score 2 · Answer 2 · answered Oct 19 '10 at 15:04

2

Not in a platform-independent way. And this would only be for hardware/OS-level exceptions, not SW exceptions.

answered Oct 19 '10 at 15:04

Oliver Charlesworth

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score 2 · Answer 3 · answered Oct 19 '10 at 15:06

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C provides exceptions in a standard library: setjmp()/longjmp().

answered Oct 19 '10 at 15:06

Joshua

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score 1 · Answer 4 · answered Oct 19 '10 at 15:05

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I don't think there is a true, pure, portable C solution. For Microsoft compilers, you can use __try __except, see http://msdn.microsoft.com/en-us/library/zazxh1a9(VS.80).aspx

answered Oct 19 '10 at 15:05

Emile

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Exception handling in pure C

4 Answers4