In read_config_file.c, clone type info when unsharing it

diff --git a/read_config_file.c b/read_config_file.c
index 991f121..ea3ab88 100644 (file)
--- a/read_config_file.c
+++ b/read_config_file.c
@@ -541,12 +541,12 @@ unshare_type_info(struct locus *loc, struct arg_type_info **infop, int *ownp)
                return 0;
 
        struct arg_type_info *ninfo = malloc(sizeof(*ninfo));
-       if (ninfo == NULL) {
+       if (ninfo == NULL || type_clone(ninfo, *infop) < 0) {
                report_error(loc->filename, loc->line_no,
                             "malloc: %s", strerror(errno));
+               free(ninfo);
                return -1;
        }
-       *ninfo = **infop;
        *infop = ninfo;
        *ownp = 1;
        return 0;
@@ -704,7 +704,7 @@ try_parse_kwd(char **str, const char *kwd)
        return -1;
 }
 
-/* XXX extra_param and param_num are a kludge to get in
+/* XXX EXTRA_PARAM and PARAM_NUM are a kludge to get in
  * backward-compatible support for "format" parameter type.  The
  * latter is only valid if the former is non-NULL, which is only in
  * top-level context.  */