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Posts: #64bit

Posts: # 64bit

05 Fév 2010
/Wp64 switch and template processing error
Evgenii Ryzhkov
While maintaining the analyzer Viva64 (included into PVS-Studio) we often comment upon the switch /Wp64 of Microsoft Visual C++. If you are out of the swim, let me remind you that this...
...
29 Jan 2010
64-bit technologies - one more trend in the modern software
Andrey Karpov
In the blogs and forums, there is much discussion of multi-core processors as an evident step of computer system development. And it is so. But there is another important development line...
...
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11 Jan 2010
Issues of 64-bit code in real programs: qsort
Andrey Karpov
We continue the cycle of posts about 64-bit errors detected in real applications. Time passes, demands for memory being consumed grow more and more, and now the time has come when somebody decides...
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11 Jan 2010
Optimization in the world of 64-bit errors
Andrey Karpov
In the previous blog-post I promised to tell you why it is difficult to demonstrate 64-bit errors by simple examples. We spoke about operator[] and I told that in simple cases even incorrect...
...
11 Jan 2010
Search of 64-bit errors in array implementation
Andrey Karpov
In PVS-Studio 3.43, we revised the way how Viva64 analyzer detects errors in the classes serving as containers (arrays). Before, we have stuck to the principle that if a class has operator[...
...
11 Jan 2010
Peculiarities of virtual functions
Andrey Karpov
I decided to describe one thing related to virtual functions because I am afraid I can forget it and return to this question once again later...
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21 Déc 2009
Why A + B != A - (-B)
Andrey Karpov
While developing Viva64 analyzer intended for detecting 64-bit errors, I sometimes encounter interesting ways of code behavior. I would like to show you one example that is not very...
...
03 Déc 2009
64-bit code issues in real programs: pointer type change
Andrey Karpov
Explicit type conversions often mask errors related to a change of a pointer type. One of such errors is casting of a pointer to 32-bit objects into a pointer to 64-bit...
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19 Nov 2009
A nice 64-bit error in C
Andrey Karpov
In C language, you may use functions without defining them. Pay attention that I speak about C language, not C++. Of course, this ability is very dangerous. Let us have a look at an...
...
08 Nov 2009
Are 64-bit errors real?
Andrey Karpov
I often hear in various interpretations the phrase: "The given examples show not the code incorrect from the viewpoint of porting to x64 systems, but the code incorrect in itself". I would like...
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