test-xvasprintf: avoid 'const' discard warnings

* tests/test-xvasprintf.c (test_xvasprintf, test_xasprintf): Use
"const" when assigning from literal strings.
(test_xasprintf): Add "void" in function argument list to placate
-Wstrict-prototypes and to be consistent with test_xvasprintf above.

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/test-xvasprintf.c b/tests/test-xvasprintf.c
index df6c2009de..023067a457 100644
--- a/tests/test-xvasprintf.c
+++ b/tests/test-xvasprintf.c
@@ -55,7 +55,7 @@ test_xvasprintf (void)
 
   {
     /* Silence gcc warning about zero-length format string.  */
-    char *empty = "";
+    const char *empty = "";
     result = my_xasprintf (empty);
     ASSERT (result != NULL);
     ASSERT (strcmp (result, "") == 0);
@@ -79,7 +79,7 @@ test_xvasprintf (void)
 }
 
 static void
-test_xasprintf ()
+test_xasprintf (void)
 {
   int repeat;
   char *result;
@@ -94,7 +94,7 @@ test_xasprintf ()
 
   {
     /* Silence gcc warning about zero-length format string.  */
-    char *empty = "";
+    const char *empty = "";
     result = xasprintf (empty);
     ASSERT (result != NULL);
     ASSERT (strcmp (result, "") == 0);