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《软件调试》答疑
帖子发起人: Landy 发起时间: 2010-03-08 21:32 下午 回复: 2
  
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 2010-03-08, 21:32 下午
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Landy
注册: 2010-03-04
发 贴: 2
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P71页清单3-1 演示错误类异常的Fault小程序
在我的Visual Studio 2008的环境里，运行这个程序，进入无限循环。输出结果是
Before div in __try block:nDividend=22, nDivisor=0, nResult=100
In __except block: nDividend=22, nDivisor=0, nResult=100
Divided by zero detected: nDividend=22, nDivisor=1, nResult=100
In __except block: nDividend=22, nDivisor=1, nResult=100
Divided by zero detected: nDividend=22, nDivisor=1, nResult=100
In __except block: nDividend=22, nDivisor=1, nResult=100
Divided by zero detected: nDividend=22, nDivisor=1, nResult=100
In __except block: nDividend=22, nDivisor=1, nResult=100
Divided by zero detected: nDividend=22, nDivisor=1, nResult=100
In __except block: nDividend=22, nDivisor=1, nResult=100
Divided by zero detected: nDividend=22, nDivisor=1, nResult=100
In __except block: nDividend=22, nDivisor=1, nResult=100
//Ctrl+C..
从输出看，nDivisor已经是1了，为什么还在不断触发DIVIDE_BY_ZERO异常？
谢谢！
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报告
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2010-03-09, 12:44 下午
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格蠹老雷
注册: 2005-12-19
发 贴: 1,303
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因为VS2K8产生的除法指令是用寄存器做除数，请参考下面这个帖子来解决这个问题：
http://advdbg.com/forums/1292/ShowPost.aspx
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IP 地址: 已记录
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2010-03-09, 21:31 下午
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Landy
注册: 2010-03-04
发 贴: 2
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IP 地址: 已记录
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高端调试 » 图书 » 《软件调试》答疑 » 请教P71页的小程序
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