使用Purify for Windows时出现的问题（紧急！）

2004-04-30 12:23:39 136 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

VC++6.0实战指南：在Windows 11上维护与开发遗留MFC项目 C++作为经典的面向对象编程语言，其开发环境与工具链的演进深刻影响着软件工程的实践。在Windows平台开发领域，集成开发环境（IDE）扮演着核心角色，它整合了编辑器、编译器、调试器等工具，极大提升了开发效率。Visual C++ 6.0作为一款经典的IDE，其设计哲学高度集成且贴近Win32 API，尤其与MFC框架深度绑定，通过类向导等工具自动化了消息映射、虚函数重载等繁琐流程，显著提升了桌面GUI程序的开发效率。其技术价值在于生成的代码和运行时库极为紧凑，对系统资源消耗极低，这使得它在追求极致轻量与稳阅读详情

**************************************************************************
#include <stdio.h>
#include <string.h>
#include <malloc.h>

int main()
{
int i, length;
char *string1 = "Hello, Windows";
char *string2 = (char*)malloc(10);

printf("%s\n", string1);

length = strlen(string2); // UMR because string2 is not initialized.

for (i = 0; string1[i] != '\0'; i++) {
string2[i] = string1[i]; // ABW's generated on this line.
}
length = strlen(string2); // ABR generated on this line.

return 0;
}
**************************************************************************

上面一段程序在cygwin中用g++编译生成a.exe，在VC中编译生成testPurify.exe
(后面简称t.exe)，然后分别用Rational Purify for Windows检查内存泄漏。

t.exe的检查结果如下：（是正常的、所期望的结果）
[I] Starting Purify'd testPurify.exe at 2004-04-30 10:47:49
[I] Starting main
[W] UMR: Uninitialized memory read in strlen {1 occurrence}
[E] ABW: Array bounds write in main {4 occurrences}
[E] ABR: Array bounds read in strlen {1 occurrence}
[I] Summary of all memory leaks... {10 bytes, 1 block}
[I] Exiting with code 0 (0x00000000)
[I] Program terminated at 2004-04-30 10:47:49

a.exe的结果如下：（不正确结果）
[I] Starting Purify'd a.exe at 2004-04-30 10:48:09
[I] Starting main
[I] Summary of all memory leaks... {0 bytes, 0 blocks}
[I] Terminating thread 0x1c4
[I] Program terminated at 2004-04-30 10:48:11

a.exe在Instrumenting cygwin1.dll的时候产生了如下log：
*************************************************************************
Purify for Windows,
Copyright (C) 1992-2001 Rational Software Corporation All rights reserved.
Version 2002.05.00; Build: 4113;
WinNT 5.0 2195 Service Pack 4 Uniprocessor Free
Instrumenting:
CYGWIN1.DLL 927560 bytes

Purify: While processing file C:\cygwin\bin\CYGWIN1.DLL:
Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Note: Instrumentation repeating with 18 additional entry points.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.

Purify: Warning: Address 0x615d0000 does not appear to be in any block.
************************************************************************

问题应该是出在cygwin1.dll上，但是不知到底是怎么回事，如何解决?还请高手不吝赐教
E-mail联系：huangliang@ebupt.com

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