Re: [Mingw-users] Grep 2.5 for MinGW [Was: Problem with Grep]

[Earnie B. <ear...@ya...>]

Wu Yongwei wrote:
> Thank Manu for doing the port for MinGW. I would like to contribute my 
> cents.
> 
> All Win32 native grep.exe (not counting the Cygwin and MSYS versions) I 
> used has the problem that "grep pattern -" does not work on my Windows 
> 2000 box. It would report "grep: (standard input): Not enough space". 
> Today I found the problem tracing the source. It seems a Windows 
> (MSVCRT; but MSVC 6 with static lib has the problem too) bug -- My 
> simplest test case shows that "read(0, buf, n)" will return -1 when n is 
> greater than around 30700. You may test on your PC but I don't know how 
> widespread the problem is.
> 
> I thus modified the grep source. Modifying the value of INITIAL_BUFSIZE 
> from 32768 to 16384 (on l. 216 of grep.c) will do the trick.
> 

Please try adding a call to setvbuf(stdin, NULL, _IONBF, 0) as the first 
funtion executed in main and report.

Earnie.