[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/src/test_demovfs.c

Index: third_party/sqlite/sqlite-src-3080704/src/test_demovfs.c
diff --git a/third_party/sqlite/sqlite-src-3070603/src/test_demovfs.c b/third_party/sqlite/sqlite-src-3080704/src/test_demovfs.c
similarity index 98%
copy from third_party/sqlite/sqlite-src-3070603/src/test_demovfs.c
copy to third_party/sqlite/sqlite-src-3080704/src/test_demovfs.c
index e56e8065cfbcd3cb73cfbf5d3535265b130998e8..c63b0a8b7a19bc398e1edb5d523757f2a0973e88 100644
--- a/third_party/sqlite/sqlite-src-3070603/src/test_demovfs.c
+++ b/third_party/sqlite/sqlite-src-3080704/src/test_demovfs.c
@@ -10,14 +10,12 @@
 **
 *************************************************************************
 **
-** An example of a simple VFS implementation that omits complex features
-** often not required or not possible on embedded platforms. Also includes
-** code to buffer writes to the journal file, which can be a significant
-** performance improvement on some embedded platforms.
+** This file implements an example of a simple VFS implementation that 
+** omits complex features often not required or not possible on embedded
+** platforms.  Code is included to buffer writes to the journal file, 
+** which can be a significant performance improvement on some embedded
+** platforms.
 **
-*/
-
-/*
 ** OVERVIEW
 **
 **   The code in this file implements a minimal SQLite VFS that can be 
@@ -128,6 +126,7 @@
 #include <unistd.h>
 #include <time.h>
 #include <errno.h>
+#include <fcntl.h>
 
 /*
 ** Size of the write buffer used by journal files in bytes.
@@ -537,7 +536,7 @@ static int demoFullPathname(
   if( zPath[0]=='/' ){
     zDir[0] = '\0';
   }else{
-    getcwd(zDir, sizeof(zDir));
+    if( getcwd(zDir, sizeof(zDir))==0 ) return SQLITE_IOERR;
   }
   zDir[MAXPATHNAME] = '\0';