Fix name re-hashing semantics

[thirdparty/git.git] / read-cache.c

diff --git a/read-cache.c b/read-cache.c
index e45f4b3d61c2982ca20c910a7fc11c5bd89204be..eb58b03f952306a23e2458d856066e90532f0f4d 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -37,8 +37,13 @@ static unsigned int hash_name(const char *name, int namelen)
 static void hash_index_entry(struct index_state *istate, struct cache_entry *ce)
 {
        void **pos;
-       unsigned int hash = hash_name(ce->name, ce_namelen(ce));
+       unsigned int hash;
 
+       if (ce->ce_flags & CE_HASHED)
+               return;
+       ce->ce_flags |= CE_HASHED;
+       ce->next = NULL;
+       hash = hash_name(ce->name, ce_namelen(ce));
        pos = insert_hash(hash, ce, &istate->name_hash);
        if (pos) {
                ce->next = *pos;
@@ -59,6 +64,7 @@ static void lazy_init_name_hash(struct index_state *istate)
 
 static void set_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
 {
+       ce->ce_flags &= ~CE_UNHASHED;
        istate->cache[nr] = ce;
        if (istate->name_hash_initialized)
                hash_index_entry(istate, ce);
@@ -82,10 +88,8 @@ static void replace_index_entry(struct index_state *istate, int nr, struct cache
 {
        struct cache_entry *old = istate->cache[nr];
 
-       if (ce != old) {
-               remove_hash_entry(istate, old);
-               set_index_entry(istate, nr, ce);
-       }
+       remove_hash_entry(istate, old);
+       set_index_entry(istate, nr, ce);
        istate->cache_changed = 1;
 }