exception from C function?

[George2]

Hello everyone,
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?
thanks in advance,
George

[Thomas J. Gritzan]

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.

--
Thomas
http://www.netmeister.org/news/learn2quote.html
post tenebras lux. post fenestras tux.