C ++异常处理有缺陷 [英] C++ exception handling is defective
问题描述
C ++堆栈解析的简单性并非没有缺陷
后果。以下文章指出了显示
缺陷的C ++示例。知道缺陷的工程师可以避免难以发现的错误。
http：//distributed-software.blogspot...defective.html
问候，
zo****@ZHMicro.com
http://www.zhmicro.com
http://distributed-software.blogspot.com
http://groups-beta.google.com/group/...Z?lnk=la&hl=en
The simplicity of stack unraveling of C++ is not without defective
consequences. The following article points to C++ examples showing the
defects. An engineer aware of defects can avoid hard-to-find bugs.
http://distributed-software.blogspot...defective.html
Regards,
zo****@ZHMicro.com
http://www.zhmicro.com
http://distributed-software.blogspot.com
http://groups-beta.google.com/group/...Z?lnk=la&hl=en
推荐答案
Zorro写道：
Zorro wrote:
C ++堆栈解析的简单性是并非没有缺陷
后果。以下文章指出了显示
缺陷的C ++示例。知道缺陷的工程师可以避免难以发现的错误。
The simplicity of stack unraveling of C++ is not without defective
consequences. The following article points to C++ examples showing the
defects. An engineer aware of defects can avoid hard-to-find bugs.
http：//distributed-software.blogspot...defective.html
从那里链接的PDF中的所有C ++示例都没有实际使用
异常处理。它们都调用未定义的行为。他们没有在C ++的异常处理中显示出一个
缺陷，而是缺乏对C ++的作者的理解。
顺便说一句：这些例子也使用了< iostream.hheader已经过了大约10年的C ++已经过时了，实际上从来没有过。
C ++标准的一部分。
http://distributed-software.blogspot...defective.html
None of the C++ examples in the PDF linked from there is actually using
exception handling. They all invoke undefined behavior. They don''t show a
defect in C++''s exception handling, but rather a lack of the author''s
understanding of C++.
BTW: Those examples are also using the <iostream.hheader that has been
outdated in C++ for about 10 years now and has actually never even been
part of the C++ Standard.
Rolf Magnus写道：
Rolf Magnus wrote:
Zorro写道：
Zorro wrote:
>> C ++的堆栈解析的简单性并非没有缺陷的后果。以下文章指出了显示
缺陷的C ++示例。知道缺陷的工程师可以避免难以发现的错误。
>>The simplicity of stack unraveling of C++ is not without defective
consequences. The following article points to C++ examples showing the
defects. An engineer aware of defects can avoid hard-to-find bugs.
http：//distributed-software.blogspot...defective.html
从那里链接的PDF中的C ++示例都没有实际使用
异常处理。它们都调用未定义的行为。他们没有在C ++的异常处理中显示出一个
缺陷，而是缺乏对C ++的作者的理解。
http://distributed-software.blogspot...defective.html
None of the C++ examples in the PDF linked from there is actually using
exception handling. They all invoke undefined behavior. They don''t show a
defect in C++''s exception handling, but rather a lack of the author''s
understanding of C++.
同意，我想知道哪个编译器和环境产生了结果
声称。
Agreed, I wonder which compiler and environment produced the results
claimed.
BTW ：这些例子也使用了< iostream.hheader已经过了10年的C ++已经过时了，实际上从来没有像B ++标准那样是b $ b的一部分。
BTW: Those examples are also using the <iostream.hheader that has been
outdated in C++ for about 10 years now and has actually never even been
part of the C++ Standard.
更不用说惯用的C（无效）。
-
Ian Collins 。
Not to mention idiomatic C (void).
--
Ian Collins.
" Zorro" < zo **** @ comcast.netwrote in message
news：11 ********************** @ o58g2000hsb.googlegr oups.com ...
"Zorro" <zo****@comcast.netwrote in message
news:11**********************@o58g2000hsb.googlegr oups.com...
C ++的堆栈解析的简单性并非没有缺陷
后果。以下文章指出了显示
缺陷的C ++示例。知道缺陷的工程师可以避免难以发现的错误。
The simplicity of stack unraveling of C++ is not without defective
consequences. The following article points to C++ examples showing the
defects. An engineer aware of defects can avoid hard-to-find bugs.
http：//distributed-software.blogspot...ing-is-defecti
ve.html
事实上代码示例使用< iostream.hand not< iostreamsuggests
a非常旧的编译器用于演示假定的异常错误。如果为< iostrea更新了
代码，则将除以零的部分替换为抛出
（/ 0导致未定义的行为）并使用更新的编译器，我认为
你会发现当堆栈被解开时确实会调用析构函数。它看起来像一个有缺陷的编译器而不是有缺陷的语言。
DW
http://distributed-software.blogspot...ing-is-defecti
ve.html
The fact that the code samples use <iostream.hand not <iostreamsuggests that
a very old compiler was used to demonstrate the supposed exception bugs. If the
code is updated for <iostreamand the divisions by zero are replaced by throws
(/0 causes undefined behaviour) and a more recent compiler is used, I think
you''ll find that the destructor is indeed called when the stack is unwound. It
looks like a defective compiler rather than a defective language.
DW
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