correct cache_entry allocation

diff --git a/read-cache.c b/read-cache.c
index 2c03ec3069decb20f7557af4ac7dbe295f2dcf9c..8f96fd17226e26c4b8a1497aace5b9fffb664bbe 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -1155,7 +1155,7 @@ int read_index_from(struct index_state *istate, const char *path)
        size_t mmap_size;
 
        errno = EBUSY;
-       if (istate->alloc)
+       if (istate->initialized)
                return istate->cache_nr;
 
        errno = ENOENT;
@@ -1195,6 +1195,7 @@ int read_index_from(struct index_state *istate, const char *path)
         * index size
         */
        istate->alloc = xmalloc(estimate_cache_size(mmap_size, istate->cache_nr));
+       istate->initialized = 1;
 
        src_offset = sizeof(*hdr);
        dst_offset = 0;
@@ -1243,10 +1244,12 @@ int discard_index(struct index_state *istate)
        istate->cache_nr = 0;
        istate->cache_changed = 0;
        istate->timestamp = 0;
+       istate->name_hash_initialized = 0;
        free_hash(&istate->name_hash);
        cache_tree_free(&(istate->cache_tree));
        free(istate->alloc);
        istate->alloc = NULL;
+       istate->initialized = 0;
 
        /* no need to throw away allocated active_cache */
        return 0;