wchar: bug #1471: fix cornercase in mbrtowc

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

2 files changed, 23 insertions, 2 deletions

diff --git a/test/locale-mbwc/Makefile.in b/test/locale-mbwc/Makefile.in
index 05c232a9b..7c0e9d529 100644
--- a/test/locale-mbwc/Makefile.in
+++ b/test/locale-mbwc/Makefile.in
@@ -15,8 +15,8 @@ TESTS := tst_iswalnum tst_iswalpha tst_iswcntrl          \
 	 tst_wcspbrk tst_wcsrtombs tst_wcsspn tst_wcsstr \
 	 tst_wcstod tst_wcstok tst_wcstombs tst_wcswidth \
 	 tst_wcsxfrm tst_wctob tst_wctomb tst_wctrans    \
-	 tst_wctype tst_wcwidth tst_strfmon
-
+	 tst_wctype tst_wcwidth tst_strfmon \
+	 tst2_mbrtowc
 
 # NOTE: For now disabled tst_strfmon to avoid build failure.
 TESTS_DISABLED := tst_strfmon
diff --git a/test/locale-mbwc/tst2_mbrtowc.c b/test/locale-mbwc/tst2_mbrtowc.c
new file mode 100644
index 000000000..92e12838c
--- /dev/null
+++ b/test/locale-mbwc/tst2_mbrtowc.c
@@ -0,0 +1,21 @@
+#include <wchar.h>
+#include <assert.h>
+#include <stdlib.h>
+
+/* bugs.uclibc.org/1471 : make sure output is 0  */
+static int
+do_test(void)
+{
+  wchar_t output;
+  int result;
+
+  output = L'A';		/* anything other than 0 will do... */
+  result = mbrtowc (&output, "", 1, 0);
+
+  assert (result == 0);
+  assert (output == 0);
+
+  return EXIT_SUCCESS;
+}
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"