1 files changed, 131 insertions, 0 deletions
diff --git a/libc/wcsmbs/tst-c16c32-1.c b/libc/wcsmbs/tst-c16c32-1.c
new file mode 100644
index 000000000..f4534c5d9
--- /dev/null
+++ b/libc/wcsmbs/tst-c16c32-1.c
@@ -0,0 +1,131 @@
+#include <inttypes.h>
+#include <locale.h>
+#include <stdio.h>
+#include <uchar.h>
+
+
+static int
+do_test (void)
+{
+  if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
+    {
+      puts ("cannot set locale");
+      return 1;
+    }
+
+  int result = 0;
+
+  char32_t c32 = 48;
+  do
+    {
+      if (c32 >= 0xd800 && c32 <= 0xe000)
+	continue;
+
+      char buf[20];
+      size_t n1 = c32rtomb (buf, c32, NULL);
+      if (n1 <= 0)
+	{
+	  printf ("c32rtomb for U'\\x%" PRIx32 "' failed\n", (uint32_t) c32);
+	  result = 1;
+	  continue;
+	}
+
+      char32_t c32out;
+      size_t n2 = mbrtoc32 (&c32out, buf, n1, NULL);
+      if ((ssize_t) n2 < 0)
+	{
+	  printf ("mbrtoc32 for U'\\x%" PRIx32 "' failed\n", (uint32_t) c32);
+	  result = 1;
+	  continue;
+	}
+      if (n2 != n1)
+	{
+	  printf ("mbrtoc32 for U'\\x%" PRIx32 "' consumed %zu bytes, not %zu\n",
+		  (uint32_t) c32, n2, n1);
+	  result = 1;
+	}
+      else if (c32out != c32)
+	{
+	  printf ("mbrtoc32 for U'\\x%" PRIx32 "' produced U'\\x%" PRIx32 "\n",
+		  (uint32_t) c32, (uint32_t) c32out);
+	  result = 1;
+	}
+
+      char16_t c16;
+      size_t n3 = mbrtoc16 (&c16, buf, n1, NULL);
+      if (n3 != n1)
+	{
+	  printf ("mbrtoc16 for U'\\x%" PRIx32 "' did not consume all bytes\n",
+		  (uint32_t) c32);
+	  result = 1;
+	  continue;
+	}
+      if (c32 < 0x10000)
+	{
+	  if (c16 != c32)
+	    {
+	      printf ("mbrtoc16 for U'\\x%" PRIx32 "' produce u'\\x%" PRIx16 "'\n",
+		      (uint32_t) c32, (uint16_t) c16);
+	      result = 1;
+	      continue;
+	    }
+	}
+      else
+	{
+	  buf[0] = '1';
+	  char16_t c16_2;
+	  size_t n4 = mbrtoc16 (&c16_2, buf, 1, NULL);
+	  if (n4 != (size_t) -3)
+	    {
+	      printf ("second mbrtoc16 for U'\\x%" PRIx32 "' did not return -3\n",
+		      (uint32_t) c32);
+	      result = 1;
+	      continue;
+	    }
+
+	  if (c32 != (((uint32_t) (c16 - 0xd7c0)) << 10) + (c16_2 - 0xdc00))
+	    {
+	      printf ("mbrtoc16 for U'\\x%" PRIx32 "' returns U'\\x%" PRIx32 "\n",
+		      (uint32_t) c32,
+		      (((uint32_t) (c16 - 0xd7c0)) << 10) + (c16_2 - 0xdc00));
+	      result = 1;
+	      continue;
+	    }
+	}
+
+      buf[0] = '\0';
+      char16_t c16_nul;
+      n3 = mbrtoc16 (&c16_nul, buf, n1, NULL);
+      if (n3 != 0)
+	{
+	  printf ("mbrtoc16 for '\\0' returns %zd\n", n3);
+	  result = 1;
+	  continue;
+	}
+
+      if (c32 < 0x10000)
+	{
+	  size_t n5 = c16rtomb (buf, c16, NULL);
+	  if ((ssize_t) n5 < 0)
+	    {
+	      printf ("c16rtomb for U'\\x%" PRIx32 "' failed with %zd\n",
+		      (uint32_t) c32, n5);
+	      result = 1;
+	      continue;
+	    }
+	  if (n5 != n1)
+	    {
+	      printf ("c16rtomb for U'\\x%" PRIx32 "' produced %zu bytes instead of %zu bytes\n",
+		      (uint32_t) c32, n5, n1);
+	      result = 1;
+	      continue;
+	    }
+	}
+    }
+  while ((c32 += 0x1111) <= U'\x12000');
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"