[1.7] Weird error "grep: writing output: Cannot allocate memory"

Christopher Faylor cgf-use-the-mailinglist-please@cygwin.com
Mon May 4 03:52:00 GMT 2009


On Sun, May 03, 2009 at 11:39:21PM -0400, Christopher Faylor wrote:
>On Fri, May 01, 2009 at 11:01:46PM +0100, Dave Korn wrote:
>>
>>    Hi[ppo],
>>
>>  I've been seeing these odd error messages scattered in amongst my grep
>>output occasionally of late, and decided to spend some time tracking them
>>down.  It now seems to me that something very strange is going on with
>>WriteConsoleW, as called from fhandler_console::write_normal().  This is
>>possibly the same underlying bug that might explain why even a non-cygwin grep
>>might show the problems documented in the earlier thread[*], although it's
>>also possible that there were two separate issues cropping up there, of which
>>this is one and the other was some kind of regex backtracking/recursion memory
>>explosion.
>>
>>  The attached STC reproduces the problem, and apparently:
>>
>>gcc-3 -mno-cygwin stc.c -o stc -W -Wall -g -O0 -o stc-mingw.exe
>>
>>gcc-4 stc.c -o stc -W -Wall -g -O0
>>
>>.. it is cygwin independent, since both executables produce similar results:
>
>A test case which demonstrates a failing Windows call fail isn't really
>interesting as far as Cygwin is concerned.  Do you have a stc which
>fails using Cygwin's API?

I made some changes to Cygwin's always-burgeoning console code which limit
the number of characters transferred to the console.  Could you check if
it still fails with these changes?

cgf

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