misc/tst-error1.c

   1 #include <error.h>
   2 #include <mcheck.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <wchar.h>
   6 #include <libc-diag.h>
   7
   8 static int
   9 do_test (int argc, char *argv[])
  10 {
  11   mtrace ();
  12   (void) freopen (argc == 1 ? "/dev/stdout" : argv[1], "a", stderr);
  13   /* Orient the stream.  */
  14   fwprintf (stderr, L"hello world\n");
  15   char buf[20000];
  16   static const char str[] = "hello world! ";
  17   for (int i = 0; i < 1000; ++i)
  18     memcpy (&buf[i * (sizeof (str) - 1)], str, sizeof (str));
  19   error (0, 0, str);
  20
  21   /* We're testing a large format string here and need to generate it
  22      to avoid this source file being ridiculous.  So disable the warning
  23      about a generated format string.  */
  24   DIAG_PUSH_NEEDS_COMMENT;
  25   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-security");
  26
  27   error (0, 0, buf);
  28   error (0, 0, buf);
  29
  30   DIAG_POP_NEEDS_COMMENT;
  31
  32   error (0, 0, str);
  33   return 0;
  34 }
  35
  36 #define TEST_FUNCTION do_test (argc, argv)
  37 #include "../test-skeleton.c"