The unalias argv array needs room for a trailing NULL.

1 files changed, 3 insertions, 2 deletions

diff --git a/options.c b/options.c
index 2e0f9da2..b6088405 100644
--- a/options.c
+++ b/options.c
@@ -1287,10 +1287,11 @@ static void popt_unalias(poptContext con, const char *opt)
 {
 	struct poptAlias unalias;
 
+	memset(&unalias, 0, sizeof unalias);
+
 	unalias.longName = opt + 2; /* point past the leading "--" */
-	unalias.shortName = '\0';
 	unalias.argc = 1;
-	unalias.argv = new_array(const char*, 1);
+	unalias.argv = new_array0(const char*, 2);
 	unalias.argv[0] = strdup(opt);
 
 	poptAddAlias(con, unalias, 0);