1 files changed, 30 insertions, 0 deletions
diff --git a/stdio-common/tst-obprintf.c b/stdio-common/tst-obprintf.c
new file mode 100644
index 0000000000..e94d7520c2
--- /dev/null
+++ b/stdio-common/tst-obprintf.c
@@ -0,0 +1,30 @@
+#include <mcheck.h>
+#include <obstack.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+int
+main (void)
+{
+  struct obstack ob;
+  int n;
+
+  mcheck_pedantic (NULL);
+
+#define obstack_chunk_alloc malloc
+#define obstack_chunk_free free
+
+  obstack_init (&ob);
+
+  for (n = 0; n < 10000; ++n)
+    {
+      mcheck_check_all ();
+      obstack_printf (&ob, "%.*s%05d", 1 + n % 7, "foobarbaz", n);
+    }
+
+  /* And a final check.  */
+  mcheck_check_all ();
+
+  return 0;
+}