When cache_entry structs are removed from index_state.cache, they are not
properly freed. Freeing those entries wasn't possible before because we
couldn't remove them from index_state.name_hash.
Now that we _do_ remove the entries from name_hash, we can also free them.
Add free(cache_entry) to all call sites of name-hash.c::remove_name_hash in
read-cache.c, as name-hash.c isn't concerned with cache_entry allocation.
cmd_rm and unmerge_index_entry_at use cache_entry.name after removing the
entry. Copy the name so that we don't access memory that has been freed.
Signed-off-by: Karsten Blees <blees@xxxxxxx>
---
builtin/rm.c | 2 +-
read-cache.c | 6 +++++-
resolve-undo.c | 7 +++++--
3 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/builtin/rm.c b/builtin/rm.c
index 0df0b4d..678da8a 100644
--- a/builtin/rm.c
+++ b/builtin/rm.c
@@ -324,7 +324,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
continue;
ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
- list.entry[list.nr].name = ce->name;
+ list.entry[list.nr].name = xstrdup(ce->name);
list.entry[list.nr++].is_submodule = S_ISGITLINK(ce->ce_mode);
}
diff --git a/read-cache.c b/read-cache.c
index 0b5c44b..4c570a1 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -47,6 +47,7 @@ static void replace_index_entry(struct index_state *istate, int nr, struct cache
struct cache_entry *old = istate->cache[nr];
remove_name_hash(istate, old);
+ free(old);
set_index_entry(istate, nr, ce);
istate->cache_changed = 1;
}
@@ -478,6 +479,7 @@ int remove_index_entry_at(struct index_state *istate, int pos)
record_resolve_undo(istate, ce);
remove_name_hash(istate, ce);
+ free(ce);
istate->cache_changed = 1;
istate->cache_nr--;
if (pos >= istate->cache_nr)
@@ -499,8 +501,10 @@ void remove_marked_cache_entries(struct index_state *istate)
unsigned int i, j;
for (i = j = 0; i < istate->cache_nr; i++) {
- if (ce_array[i]->ce_flags & CE_REMOVE)
+ if (ce_array[i]->ce_flags & CE_REMOVE) {
remove_name_hash(istate, ce_array[i]);
+ free(ce_array[i]);
+ }
else
ce_array[j++] = ce_array[i];
}
diff --git a/resolve-undo.c b/resolve-undo.c
index 77101f5..64793db 100644
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -119,6 +119,7 @@ int unmerge_index_entry_at(struct index_state *istate, int pos)
struct string_list_item *item;
struct resolve_undo_info *ru;
int i, err = 0, matched;
+ char *name;
if (!istate->resolve_undo)
return pos;
@@ -138,20 +139,22 @@ int unmerge_index_entry_at(struct index_state *istate, int pos)
if (!ru)
return pos;
matched = ce->ce_flags & CE_MATCHED;
+ name = xstrdup(ce->name);
remove_index_entry_at(istate, pos);
for (i = 0; i < 3; i++) {
struct cache_entry *nce;
if (!ru->mode[i])
continue;
nce = make_cache_entry(ru->mode[i], ru->sha1[i],
- ce->name, i + 1, 0);
+ name, i + 1, 0);
if (matched)
nce->ce_flags |= CE_MATCHED;
if (add_index_entry(istate, nce, ADD_CACHE_OK_TO_ADD)) {
err = 1;
- error("cannot unmerge '%s'", ce->name);
+ error("cannot unmerge '%s'", name);
}
}
+ free(name);
if (err)
return pos;
free(ru);
--
1.8.4.11.g4f52745.dirty
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