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Look at all the results. Even before that exceptions are more often a win than a loss.

> The same test on Windows/VC++ will probably run a lot slower ...

By default on 32-bit, with SJLJ exceptions, that's likely. But on 64-bit windows the default exception handling (SEH) uses a similar mechanism than Linux and should have comparable performance.

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> But on 64-bit windows the default exception handling (SEH) uses a similar mechanism than Linux and should have comparable performance.

AFAIK SEH in Windows calls RaiseException() which in turn causes a user/kernel mode transition, probes for exception/termination handlers, and vectored exception handlers depending on the severity. It's been a while but I'm not sure the code GCC generates in Linux is quite like this.

I missed this in my previous reply ...

> Look at all the results. Even before that exceptions are more often a win than a loss.

The blog post you linked to effectively says "it depends"

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