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New Message on cochindotnet
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From: J.K.
Message 5 in Discussion
Hi,
The buf[bytesRead] = '\0'; will overrun the
buffer when bytesread == length.
I believe buf = new char[length]; should be buf
= new char[length+1];
Have a nice day,
Jayakrishnan K
[ MVP - Visual C++ ]
At 04:53 AM 7/18/03 -0700, you wrote:
New Message on
cochindotnet
reading stdin C++ (pipe)
Reply
Reply to Sender Recommend Message 4 in Discussion
From: mail2dolly
Hi,
I am now using ReadFile in a loop to read stdin, It works fine for small amounts of
data but when the data piped is large, it crashes saying "The Process tried to write
to a nonexistent pipe" ( For Eg dir /s|prog.exe on the C drive at cmd)
Any idea how I can get past this?
Ignorant question : Can I use anonymous pipe concept here to read in from the pipe. Or
that is used only with user created pipes?
I am doing something like this :
if(GetFileType(h) == FILE_TYPE_PIPE)
{
while(1)
{
buf = new char[length];
bResult = ReadFile(h, buf, length, &bytesRead, NULL);
buf[bytesRead] = '\0';
if(bResult bytesRead == 0 )break; //EOF
buf = 0;
bytesRead = 0;
}
}
ReadFile throws an error sometimes, and sometimes it works fine. I think I am missing
something here, if somebody has any idea, please mail back.
Thanks and Regards,
Dolly
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