merge 5.1->5.2

1 files changed, 7 insertions, 0 deletions

diff --git a/mysys/my_getwd.c b/mysys/my_getwd.c
index e0c5b94b53e..e6b867e2753 100644
--- a/mysys/my_getwd.c
+++ b/mysys/my_getwd.c
@@ -50,11 +50,16 @@ int my_getwd(char * buf, size_t size, myf MyFlags)
   DBUG_PRINT("my",("buf: 0x%lx  size: %u  MyFlags %d",
                    (long) buf, (uint) size, MyFlags));
 
+  if (size < 1)
+    return(-1);
+
   if (curr_dir[0])				/* Current pos is saved here */
     VOID(strmake(buf,&curr_dir[0],size-1));
   else
   {
 #if defined(HAVE_GETCWD)
+    if (size < 2)
+      return(-1);
     if (!getcwd(buf,(uint) (size-2)) && MyFlags & MY_WME)
     {
       my_errno=errno;
@@ -68,6 +73,8 @@ int my_getwd(char * buf, size_t size, myf MyFlags)
       strmake(buf,pathname,size-1);
     }
 #elif defined(VMS)
+    if (size < 2)
+      return(-1);
     if (!getcwd(buf,size-2,1) && MyFlags & MY_WME)
     {
       my_errno=errno;