Re: We do not use C++ exceptions at Google
Balog Pal wrote:
"Maxim Yegorushkin" <maxim.yegorushkin@gmail.com>
void Func(SomeObject* obj) // must check for null args usually
{
assert(null != obj)
// do something
}
It is going to dump core on NULL pointer with or without the
assertion. This assertion is plain useless.
Says what?
The standard states dereferencing NULL pointer is undefined behavior. So
anything can happen.
On most modern unix systems, in practice, it is really dumping core or just
terminates the process via SIGSEGV, yet it is only one of a zillion possible
outcomes.
Just an example: on WIN32, using the not most recent MSVC NULL-access
generates a SOH exception. And if you have a catch(...) block upper,
execution gets there.
While failed assert does a deterministic and sure call to abort(), you can
rely on.
Plus, assert gives you the file and line of the violation.
Andrei
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