The code is correct as it contains an assert(3) in the "default" switch

case, but GCC 4.3 is not able to detect this and instead complains
with "warning: 'amode' may be used uninitialized in this function".
Hence, although the assert(3) already protects the code here, get rid of
this compiler warning by doing a simple initialization of the "amode"
variable. (CVS 4436)

FossilOrigin-Name: 91831ff2922666b39d8f4ba448982c6763030633

src/os_unix.c

@@ -2451,7 +2451,7 @@ static int unixDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
 ** Otherwise return 0.
 */
 static int unixAccess(sqlite3_vfs *pVfs, const char *zPath, int flags){
-  int amode;
+  int amode = 0;
   switch( flags ){
     case SQLITE_ACCESS_EXISTS:
       amode = F_OK;