1 files changed, 56 insertions, 0 deletions
diff --git a/libio/bug-ftell.c b/libio/bug-ftell.c
new file mode 100644
index 0000000000..f7a9a776a2
--- /dev/null
+++ b/libio/bug-ftell.c
@@ -0,0 +1,56 @@
+#include <locale.h>
+#include <stdio.h>
+#include <wchar.h>
+
+
+static int
+do_test (void)
+{
+  if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
+    {
+      puts ("setlocale failed");
+      return 1;
+    }
+
+  FILE *fp = tmpfile ();
+  if (fp == NULL)
+    {
+      puts ("tmpfile failed");
+      return 1;
+    }
+
+  if (fputws (L"hello", fp) == EOF)
+    {
+      puts ("fputws failed");
+      return 1;
+    }
+
+  rewind (fp);
+
+  wchar_t *cp;
+  unsigned int cnt;
+  for (cp = L"hello", cnt = 1; *cp != L'\0'; ++cp, ++cnt)
+    {
+      wint_t wc = fgetwc (fp);
+      if (wc != (wint_t) *cp)
+	{
+	  printf ("fgetwc failed: got L'%lc', expected L'%lc'\n", wc, *cp);
+	  return 1;
+	}
+      off_t o = ftello (fp);
+      if (o != cnt)
+	{
+	  printf ("ftello failed: got %lu, expected %u\n",
+		  (unsigned long int) o, cnt);
+	  return 1;
+	}
+      printf ("round %u OK\n", cnt);
+    }
+
+  fclose (fp);
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"