s4:heimdal: import lorikeet-heimdal-200907152325 (commit 2bef9cd5378c01e9c2a74d622176...

[samba.git] / source4 / heimdal / lib / krb5 / store_emem.c

diff --git a/source4/heimdal/lib/krb5/store_emem.c b/source4/heimdal/lib/krb5/store_emem.c
index 4be89b6564bcfeb20a61f008a87d4ccb90386716..acf984280ee1a16bae20680afb93c35d21f2d106 100644 (file)
--- a/source4/heimdal/lib/krb5/store_emem.c
+++ b/source4/heimdal/lib/krb5/store_emem.c
@@ -110,7 +110,12 @@ emem_trunc(krb5_storage *sp, off_t offset)
      * If offset is larget then current size, or current size is
      * shrunk more then half of the current size, adjust buffer.
      */
-    if (offset > s->size || (s->size / 2) > offset) {
+    if (offset == 0) {
+       free(s->base);
+       s->size = 0;
+       s->base = NULL;
+       s->ptr = NULL;
+    } else if (offset > s->size || (s->size / 2) > offset) {
        void *base;
        size_t off;
        off = s->ptr - s->base;