Re: exception from C function?
On Jan 28, 4:41 am, "Thomas J. Gritzan" <Phygon_ANTIS...@gmx.de>
wrote:
George2 wrote:
As far as I know, C function does not throw exception.
But Bjarne said in his book, section 14.8 Exception and Efficiency,
--------------------
In particular, an implementation knows that only a few standard C
library functions (such as atexit() and qsort()) can throw exceptions,
and it can take advantage of that fact to generate better code.
--------------------
What did he mean? C function could really throw exception? What
exception -- C++ exception or structured exception?
There are no structured exceptions in C++ world (it's a MS
Windows specific thing), so Bjarne meant C++ exceptions.
atexit() and qsort() both take function pointers to callback
function that get called at some time and these functions
could throw an exception. So atexit() and qsort() can
indirectly throw exceptions.
I wouldn't be so sure about atexit(). It's pretty much
guaranteed that the function you pass to it won't be called
until after atexit() returns. (Threading issues aside, but if
you're calling exit() in one thread, and atexit() in another,
you've got real problems in your code.)
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