+
+ /* Test the support of the left-adjust flag. */
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "a%*sc", -3, "b");
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "a%-*sc", 3, "b");
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "a%-*sc", -3, "b");
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ /* Test the support of large precision. */
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000d %d", 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.*d %d", 4000, 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000d %d", -1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ ASSERT (result[0] == '-');
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[1 + i] == '0');
+ ASSERT (strcmp (result + 1 + 4000 - 7, "1234567 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000u %d", 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000o %d", 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "4553207 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000x %d", 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ for (i = 0; i < 4000 - 6; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 6, "12d687 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%#.4000x %d", 1234567, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ ASSERT (result[0] == '0');
+ ASSERT (result[1] == 'x');
+ for (i = 0; i < 4000 - 6; i++)
+ ASSERT (result[2 + i] == '0');
+ ASSERT (strcmp (result + 2 + 4000 - 6, "12d687 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.4000f %d", 1.0, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ ASSERT (result[0] == '1');
+ ASSERT (result[1] == '.');
+ for (i = 0; i < 4000; i++)
+ ASSERT (result[2 + i] == '0');
+ ASSERT (strcmp (result + 2 + 4000, " 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%.511f %d", 1.0, 99);
+ size_t i;
+ ASSERT (result != NULL);
+ ASSERT (result[0] == '1');
+ ASSERT (result[1] == '.');
+ for (i = 0; i < 511; i++)
+ ASSERT (result[2 + i] == '0');
+ ASSERT (strcmp (result + 2 + 511, " 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ {
+ char input[5000];
+ size_t length;
+ char *result;
+ size_t i;
+
+ for (i = 0; i < sizeof (input) - 1; i++)
+ input[i] = 'a' + ((1000000 / (i + 1)) % 26);
+ input[i] = '\0';
+ result = my_asnprintf (NULL, &length, "%.4000s %d", input, 99);
+ ASSERT (result != NULL);
+ ASSERT (memcmp (result, input, 4000) == 0);
+ ASSERT (strcmp (result + 4000, " 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+
+ /* Test the support of the %s format directive. */
+
+ /* To verify that these tests succeed, it is necessary to run them under
+ a tool that checks against invalid memory accesses, such as ElectricFence
+ or "valgrind --tool=memcheck". */
+ {
+ size_t i;
+
+ for (i = 1; i <= 8; i++)
+ {
+ char *block;
+ size_t length;
+ char *result;
+
+ block = (char *) malloc (i);
+ memcpy (block, "abcdefgh", i);
+ result = my_asnprintf (NULL, &length, "%.*s", (int) i, block);
+ ASSERT (result != NULL);
+ ASSERT (memcmp (result, block, i) == 0);
+ ASSERT (result[i] == '\0');
+ ASSERT (length == strlen (result));
+ free (result);
+ free (block);
+ }
+ }
+#if HAVE_WCHAR_T
+ {
+ size_t i;
+
+ for (i = 1; i <= 8; i++)
+ {
+ wchar_t *block;
+ size_t j;
+ size_t length;
+ char *result;
+
+ block = (wchar_t *) malloc (i * sizeof (wchar_t));
+ for (j = 0; j < i; j++)
+ block[j] = "abcdefgh"[j];
+ result = my_asnprintf (NULL, &length, "%.*ls", (int) i, block);
+ ASSERT (result != NULL);
+ ASSERT (memcmp (result, "abcdefgh", i) == 0);
+ ASSERT (result[i] == '\0');
+ ASSERT (length == strlen (result));
+ free (result);
+ free (block);
+ }
+ }
+#endif
+
+#if HAVE_WCHAR_T
+ /* Test that converting an invalid wchar_t[] to char[] fails with EILSEQ. */
+ {
+ static const wchar_t input[] = { (wchar_t) 1702057263, 114, 0 };
+ size_t length;
+ char *result = my_asnprintf (NULL, &length, "%ls %d", input, 99);
+ if (result == NULL)
+ ASSERT (errno == EILSEQ);
+ else
+ free (result);
+ }
+ {
+ static const wchar_t input[] = { (wchar_t) 1702057263, 114, 0 };
+ size_t length;
+ char *result = my_asnprintf (NULL, &length, "%3ls %d", input, 99);
+ if (result == NULL)
+ ASSERT (errno == EILSEQ);
+ else
+ free (result);
+ }
+ {
+ static const wchar_t input[] = { (wchar_t) 1702057263, 114, 0 };
+ size_t length;
+ char *result = my_asnprintf (NULL, &length, "%.1ls %d", input, 99);
+ if (result == NULL)
+ ASSERT (errno == EILSEQ);
+ else
+ free (result);
+ }
+ {
+ static const wchar_t input[] = { (wchar_t) 1702057263, 114, 0 };
+ size_t length;
+ char *result = my_asnprintf (NULL, &length, "%3.1ls %d", input, 99);
+ if (result == NULL)
+ ASSERT (errno == EILSEQ);
+ else
+ free (result);
+ }
+#endif
+
+#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) && !defined __UCLIBC__
+ /* Test that the 'I' flag is supported. */
+ {
+ size_t length;
+ char *result =
+ my_asnprintf (NULL, &length, "%Id %d", 1234567, 99);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "1234567 99") == 0);
+ ASSERT (length == strlen (result));
+ free (result);
+ }
+#endif