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Add documentation to make it clear that short reads from xRead in the VFS

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must be zero-filled. (CVS 5867)

FossilOrigin-Name: fb311d6f4098a08f05b3fac9a2a7e2a53c38bb5f
This commit is contained in:
drh
2008-11-07 00:06:18 +00:00
parent 1735fa8892
commit 4c17c3fb11
6 changed files with 23 additions and 14 deletions
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3
src/os_win.c
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@@ -12,7 +12,7 @@
**
** This file contains code that is specific to windows.
**
** $Id: os_win.c,v 1.136 2008/10/22 16:55:47 shane Exp $
** $Id: os_win.c,v 1.137 2008/11/07 00:06:18 drh Exp $
*/
#include "sqliteInt.h"
#if SQLITE_OS_WIN /* This file is used for windows only */
@@ -666,6 +666,7 @@ static int winRead(
if( got==(DWORD)amt ){
return SQLITE_OK;
}else{
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[got], 0, amt-got);
return SQLITE_IOERR_SHORT_READ;
}