Re: vector::pop_back issue

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Thu, 17 Jul 2008 06:02:26 -0700 (PDT)
Message-ID:
<9e7389a9-8c2a-46c6-9fb3-d349b1817ff2@26g2000hsk.googlegroups.com>
On Jul 17, 10:27 am, Sarath <CSar...@gmail.com> wrote:

at the time class destruction, application error occurs. Seems
the heap was corrupted with the pop_back operation on empty
vector.

the code failed to execute in Visual C++ 6 and 2008. but
worked fine in DevCPP. I admit that the pop function should
check for empty vector. but still the different behavior
concludes, it's a bug in Microsoft STL Implementation


Or rather, that you've undefined behavior in your code. Garbage
in, garbage out, as they say. (From a quality of implementation
point of view, of course, the code should crash, at least in
debug mode. Which is what all of my implementations -- Sun CC,
g++ and VC++ -- do, once I fix the errors which prevent it from
compiling.)

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