(savedir): Check for size zero before invoking

malloc; this can occur if st_size arg overflows on conversion to
unsigned int.  All callers now cast st_size arg to unsigned int.

diff --git a/lib/savedir.c b/lib/savedir.c
index 76634eef4e62d203b25e329ecf922d7b9d3e850b..4c07bffc294b378eeeab952a79f30e669daf0fb3 100644 (file)
--- a/lib/savedir.c
+++ b/lib/savedir.c
@@ -87,7 +87,7 @@ savedir (dir, name_size)
   if (dirp == NULL)
     return NULL;
 
-  name_space = (char *) malloc (name_size);
+  name_space = (char *) malloc (name_size ? name_size : 1);
   if (name_space == NULL)
     {
       closedir (dirp);