Memory leaks

[janmerkschien]

Hello,
i'm searching a programm that can detect a special type of memory leaks, like these:

int a = 12;
char c[10];
char cc = c[a];

thanks Jan

[MiiNiPaa]

This is not a leak. It is undefined behavior here. You want a static code analyser.
There is free one in clang, there in cppcheck and I believe Visual studio has one too.

[janmerkschien]

i will try the one from Visual Studio,
thanks :)

[MikeyBoy]

Or, y'know, use vectors rather than C-style arrays.

[MiiNiPaa]

Accessing wrong index is a problem with vectors too.

[mutexe]

yea but at least is a lot more obvious where the issue might be with vectors.

[dhayden]

yea but at least is a lot more obvious where the issue might be with vectors.

How so? If the code were:

int a = 12;
vector<char> c(10);
char cc = c[a];

then wouldn't the problem be the same?

[Peter87]

then wouldn't the problem be the same?

With some compilers you can enable bound checks for vector's operator[]. In GCC it will do bounds checking if you define the macro _GLIBCXX_DEBUG. I guess you can do something similar in Visual C++.

[JLBorges]

> I guess you can do something similar in Visual C++

With Visual C++, #define _SECURE_SCL 1 gives checked element access and range-checked iterators.
http://msdn.microsoft.com/en-us/library/vstudio/aa985965(v=vs.120).aspx

With any implementation, at() provides bounds checked element access.