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1# Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc.
2# This file is free software; the Free Software Foundation
3# gives unlimited permission to copy and/or distribute it,
4# with or without modifications, as long as this notice is preserved.
5
6# Test whether the *printf family of functions supports the %ls format
7# directive and in particular, when a precision is specified, whether
8# the functions stop converting the wide string argument when the number
9# of bytes that have been produced by this conversion equals or exceeds
10# the precision.
11# Result is gl_cv_func_printf_directive_ls.
12
13printf_directive_ls_test = '''
14/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
15   <wchar.h>.
16   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
17   included before <wchar.h>.  */
18#include <stddef.h>
19#include <stdio.h>
20#include <time.h>
21#include <wchar.h>
22#include <string.h>
23int main ()
24{
25  int result = 0;
26  char buf[100];
27  /* Test whether %ls works at all.
28     This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on
29     Cygwin 1.5.  */
30  {
31    static const wchar_t wstring[] = { 'a', 'b', 'c', 0 };
32    buf[0] = '\0';
33    if (sprintf (buf, "%ls", wstring) < 0
34        || strcmp (buf, "abc") != 0)
35      result |= 1;
36  }
37  /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an
38     assertion failure inside libc), but not on OpenBSD 4.0.  */
39  {
40    static const wchar_t wstring[] = { 'a', 0 };
41    buf[0] = '\0';
42    if (sprintf (buf, "%ls", wstring) < 0
43        || strcmp (buf, "a") != 0)
44      result |= 2;
45  }
46  /* Test whether precisions in %ls are supported as specified in ISO C 99
47     section 7.19.6.1:
48       "If a precision is specified, no more than that many bytes are written
49        (including shift sequences, if any), and the array shall contain a
50        null wide character if, to equal the multibyte character sequence
51        length given by the precision, the function would need to access a
52        wide character one past the end of the array."
53     This test fails on Solaris 10.  */
54  {
55    static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 };
56    buf[0] = '\0';
57    if (sprintf (buf, "%.2ls", wstring) < 0
58        || strcmp (buf, "ab") != 0)
59      result |= 8;
60  }
61  return result;
62}
63'''
64
65if not meson.is_cross_build() or meson.has_exe_wrapper()
66  run_result = cc.run(printf_directive_ls_test,
67      name : 'printf supports the \'ls\' directive')
68  gl_cv_func_printf_directive_ls = run_result.compiled() and run_result.returncode() == 0
69else
70  if (host_system.startswith ('openbsd') or
71        host_system.startswith ('irix') or
72        host_system.startswith ('solaris') or
73        host_system.startswith ('cygwin') or
74        host_system.startswith ('beos') or
75        host_system.startswith ('haiku'))
76    gl_cv_func_printf_directive_ls = false
77  elif host_system == 'windows'
78    gl_cv_func_printf_directive_ls = true
79  else
80    gl_cv_func_printf_directive_ls = true
81  endif
82endif
83