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As an experiment, we have decided to offer everyone interested a PVS-Studio registration key for 5 days to study its 64-bit diagnostics more thoroughly. The PVS-Studio demo version is absolutely full-function. It is sufficient to study the tool and get familiar with its capabilities. The user has up to 200 clicks to navigate through code fragments the analyzer considers to be probably incorrect. We believe it's quite enough for the user to decide if he/she likes the tool or not. However, that might be insufficient in case you are searching for 64-bit errors. Many of the 64-bit warnings are false positives or are irrelevant to this program, as fragments they point to cannot cause errors. That's why the restriction of 200 messages you can click to navigate through the code may prevent you from forming a definite opinion of the tool. We have been watching an increasing interest towards development of 64-bit software lately. Perhaps this has to do with the release of Embarcadero RAD Studio XE3 Update 1 that has learned now to compile 64-bit applications. Or maybe it's just that the time has come.

In forums, people often say that 64-bit versions of programs consume a larger amount of memory and stack. Saying so, they usually argue that the sizes of data have become twice larger. But this statement is unfounded since the size of most types (char, short, int, float) in the C/C++ language remains the same on 64-bit systems. Of course, for instance, the size of a pointer has increased but far not all the data in a program consist of pointers. The reasons why the memory amount consumed by programs has increased are more complex. I decided to investigate this issue in detail.

The article will familiarize application developers with tasks given them by the mass introduction of 64-bit multi-core processors symbolizing revolutionary increase of computing power available for an average user. It will also touch upon the problems of effective use of hardware resources for solving everyday applied tasks within the limits of Windows x64 operating system

PVS-Studio is a static analyzer that detects errors in source code of C/C++/C++11 applications. There are sets of rules included into PVS-Studio: General-purpose diagnosis Detection of possible optimizations Diagnosis of 64-bit errors (Viva64) Diagnosis of parallel errors (VivaMP)