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strncpy_s and gcc ?

I have been doing some (re)search on the VS-warning
warning C4996: 'strncpy' was declared deprecated

It seems to be a MS-way to force strncpy to become deprecated, but it
is not ISO-deprecated.

However MS wants this to be replaced with strncpy_s
1) Is it c++,TR1 or just MS standard (TR proposal) ?

2) gcc 4.1.1 does not seem to have strncpy_s - is that correct
(Or do I miss an include or something)

Oct 17 '06
11 18589

Jim Langston wrote:
"tmartsum" <tm******@gmail .comwrote in message

ISO allows any warning, as long as legal C++ code still works.

OK - so MS is allowed to give any warning - I am however not happy with
warnings that suggest me to change my code into something that is not
(ISO) c++...

That's Microsoft for you. And it should be _strncpy_s since it's an
extension. Microsoft did that from some calls from VC6 to VC .net 2003,
but on this one I think they thought it would be in the new standard or
Not necessarily. Whether strncpy_s is defined or not could be made
dependent on the definition of an implementation-reserved identifier.
Since no conforming program would have already defined this identifier,
there is no chance that the these extensions would break a conforming
program. Instead, a C or C++ program has to first define
__STDC_WANT_LIB _EXT1__ before it can call any of the routines in the TR
"bounds-checked" extension to the standard C library.


Oct 18 '06 #11

tmartsum wrote:
Mi************* @tomtom.com skrev:
tmartsum wrote:
I have been doing some (re)search on the VS-warning
warning C4996: 'strncpy' was declared deprecated
<snip discussion of strncpy vs strncpy_s>
ISO allows any warning, as long as legal C++ code still works.

OK - so MS is allowed to give any warning - I am however not happy with
warnings that suggest me to change my code into something that is not
(ISO) c++...
Depending on your level of unhappiness, you have several options. For
example, you could do one or more of the following:

Contact Microsoft and give them your feedback as a customer.
Vote with your feet and change to a different compiler vendor.
Look in Microsoft's documentation for the way to switch off that
warning now you understand why it's there and why you don't want it.

The last one has worked for me.

Gavin Deane

Oct 18 '06 #12

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