cmd_config(): make a copy of path obtained from git_path()

The strings returned by git_path() are recycled after a while.  Make
a copy of the config filename rather than holding onto the return
value from git_path().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/config.c b/builtin/config.c
index 8cc2604069cd008297081988ac807412ba9901a7..606a3c085621581de01115e97d88c65a6c20e824 100644 (file)
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -568,8 +568,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                }
        }
        else if (actions == ACTION_EDIT) {
-               const char *config_file = given_config_source.file ?
-                       given_config_source.file : git_path("config");
+               char *config_file;
+
                check_argc(argc, 0, 0);
                if (!given_config_source.file && nongit)
                        die("not in a git directory");
@@ -578,6 +578,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                if (given_config_source.blob)
                        die("editing blobs is not supported");
                git_config(git_default_config, NULL);
+               config_file = xstrdup(given_config_source.file ?
+                                     given_config_source.file : git_path("config"));
                if (use_global_config) {
                        int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
                        if (fd) {
@@ -590,6 +592,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                                die_errno(_("cannot create configuration file %s"), config_file);
                }
                launch_editor(config_file, NULL, NULL);
+               free(config_file);
        }
        else if (actions == ACTION_SET) {
                int ret;