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-rw-r--r--debug/tst-chk1.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 37320c3514..0df660d57f 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -474,5 +474,22 @@ do_test (void)
CHK_FAIL_END
#endif
+ /* Check whether missing N$ formats are detected. */
+ CHK_FAIL2_START
+ printf ("%3$d\n", 1, 2, 3, 4);
+ CHK_FAIL2_END
+
+ CHK_FAIL2_START
+ fprintf (stdout, "%3$d\n", 1, 2, 3, 4);
+ CHK_FAIL2_END
+
+ CHK_FAIL2_START
+ sprintf (buf, "%3$d\n", 1, 2, 3, 4);
+ CHK_FAIL2_END
+
+ CHK_FAIL2_START
+ snprintf (buf, sizeof (buf), "%3$d\n", 1, 2, 3, 4);
+ CHK_FAIL2_END
+
return ret;
}