Rational Purify for Windows

Dynamic software analysis with memory debugging and memory leak protection

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IBM Rational® Purify® for Windows is a dynamic software analysis tool for Microsoft Windows® application development. This software provides memory debugging and leak detection for all aspects of Windows application development. Rational Purify monitors and analyzes how a program uses memory and reports errors with source code details that identify the cause and location of the error.

  • Memory debugging identifies difficult to find memory errors, such as uninitialized memory access, buffer overflow, and improper freeing of memory.
  • Memory leak protection identifies memory blocks that cannot be referenced along with memory blocks that are never freed.
  • Binary instrumentation technology instruments code at the byte or object level, can be used with third-party libraries, and does not require access to source code.

Memory debugging

  • Rational Purify analyzes memory accesses and manipulations by your program and identifies memory errors before they occur.
  • This software provides detailed information, such as the error location (function call stack) and the size of the affected memory.
  • Rational Purify offers APIs that you can invoke from your program or debugger to further assist you in debugging memory problems.

Memory leak protection

  • Rational Purify scans all memory and reports all memory blocks without any pointers as memory leaks.
  • It reports all blocks as potential leaks when there are no pointers to the beginning of the block, but there are pointers to the middle of the block.
  • This software specifies the line where the leaked memory was allocated.
  • Rational Purify lets you debug at the memory allocation site where the leak is reported, and then tracks what you are doing with that pointer and where you are overwriting it.

Binary instrumentation technology

  • Rational Purify does not require recompilation to analyze code.
  • This software analyzes third-party libraries, even if you do not have the source code.
  • Rational Purify supports C and C++.
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Dynamic software analysis with memory debugging and memory leak protection

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System requirements

The following information lists the basic software requirements for using IBM Rational Purify.


Operating SystemHardware
Microsoft® Windows Vista® (Business, Enterprise, Ultimate) base through SP2
Microsoft Windows XP Professional, base through SP3
Microsoft Windows 7, base through SP1
Microsoft Windows Server® 2003 (Standard, Enterprise, R2 Standard, R2 Enterprise), base through SP2
Microsoft Windows Server 2008 (Enterprise, Standard, DataCenter), base through SP2
Microsoft Windows Server 2008 R2 (Enterprise, Standard, DataCenter), base through SP1		 Intel® IA-32
Intel 64
AMD 64

Data Collection TypeProcessor ArchitecturesSupported Compilers and Runtime environments
C/C++ (unmanaged code) data collection Intel IA-32
Intel 64
AMD 64		 Microsoft Visual Studio® 2010, base through SP1
Microsoft Visual Studio® 2008, base through SP1
Microsoft Visual Studio 2005, base through SP1
.NET (managed code) data collection Intel IA-32
Intel 64
AMD 64		 Microsoft .NET Framework versions 1.0, 1.1, 2.0, 3.0, 3.5 used with the following:
Microsoft Visual Studio 2010, base through SP1
Microsoft Visual Studio 2008, base through SP1
Microsoft Visual Studio 2005, base through SP1

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