Re: Safety-Critical Systems Developed Using C++

[Ted Dennison <dennison@telepath.com>]

In article <vu4e6tc8rqjvpu21q9t4aancrnuk0fn6se@4ax.com>,
  sahan_aDOG@amarasekera.freeserve.co.uk wrote:
> On Thu, 18 Jan 2001 15:24:41 GMT, Ted Dennison <dennison@telepath.com>
> wrote:
> >That's interesting. Rational performed a similar study on their
> >compiler codebase using data culled over 11 years of development, and
> >found that their Ada code had 1/7th the defect rate of their C code
> >and requied only half as many fixes per SLOC.
>
> Did they get any data on how Ada compared to C++ ??

No. Their data was collected over an 11-year period ending at about
1994, during which no C++ code existed in their codebase (and precious
little outside of it).

They do address C++ in the last section:

  "Some may look at this study and conclude that C++ will tame C's problems.

Our early experience does not support that conclusion.

Bug rates in C++ are running even higher than C,..."

However, there is no hard data presented, so I'd take this section with
a grain of salt (if not a whole shaker).

--
T.E.D.

http://www.telepath.com/~dennison/Ted/TED.html


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