hash-object: fix buffer reuse with --path in a subdirectory

diff --git a/builtin/hash-object.c b/builtin/hash-object.c
index f7d3567dd0ce2d75778d6cf011961c0f203432b4..56df77b0c2a299fcba56a2542f7adb34869ced9f 100644 (file)
--- a/builtin/hash-object.c
+++ b/builtin/hash-object.c
@@ -87,6 +87,7 @@ int cmd_hash_object(int argc, const char **argv, const char *prefix)
        int stdin_paths = 0;
        int no_filters = 0;
        int literally = 0;
+       int nongit = 0;
        unsigned flags = HASH_FORMAT_CHECK;
        const char *vpath = NULL;
        const struct option hash_object_options[] = {
@@ -107,12 +108,14 @@ int cmd_hash_object(int argc, const char **argv, const char *prefix)
        argc = parse_options(argc, argv, NULL, hash_object_options,
                             hash_object_usage, 0);
 
-       if (flags & HASH_WRITE_OBJECT) {
+       if (flags & HASH_WRITE_OBJECT)
                prefix = setup_git_directory();
-               prefix_length = prefix ? strlen(prefix) : 0;
-               if (vpath && prefix)
-                       vpath = prefix_filename(prefix, prefix_length, vpath);
-       }
+       else
+               prefix = setup_git_directory_gently(&nongit);
+
+       prefix_length = prefix ? strlen(prefix) : 0;
+       if (vpath && prefix)
+               vpath = xstrdup(prefix_filename(prefix, prefix_length, vpath));
 
        git_config(git_default_config, NULL);
 
@@ -141,11 +144,14 @@ int cmd_hash_object(int argc, const char **argv, const char *prefix)
 
        for (i = 0 ; i < argc; i++) {
                const char *arg = argv[i];
+               char *to_free = NULL;
 
                if (0 <= prefix_length)
-                       arg = prefix_filename(prefix, prefix_length, arg);
+                       arg = to_free =
+                               xstrdup(prefix_filename(prefix, prefix_length, arg));
                hash_object(arg, type, no_filters ? NULL : vpath ? vpath : arg,
                            flags, literally);
+               free(to_free);
        }
 
        if (stdin_paths)