|
111
|
1 /* { dg-do run } */
|
|
|
2 /* { dg-options "-O2" } */
|
|
|
3
|
|
|
4 #include <stdarg.h>
|
|
|
5
|
|
|
6 extern int error_open_missing_mode (void)
|
|
|
7 __attribute__((__error__ ("open with O_CREAT needs 3 arguments, only 2 were given")));
|
|
|
8 extern int warn_open_too_many_arguments (void)
|
|
|
9 __attribute__((__warning__ ("open called with more than 3 arguments")));
|
|
|
10 extern void abort (void);
|
|
|
11
|
|
|
12 char expected_char;
|
|
|
13
|
|
|
14 __attribute__((noinline)) int
|
|
|
15 myopen2 (const char *path, int oflag)
|
|
|
16 {
|
|
|
17 if (expected_char++ != path[0] || path[1] != '\0')
|
|
|
18 abort ();
|
|
|
19 switch (path[0])
|
|
|
20 {
|
|
|
21 case 'f':
|
|
|
22 if (oflag != 0x2)
|
|
|
23 abort ();
|
|
|
24 break;
|
|
|
25 case 'g':
|
|
|
26 if (oflag != 0x43)
|
|
|
27 abort ();
|
|
|
28 /* In real __open_2 this would terminate the program:
|
|
|
29 open with O_CREAT without third argument. */
|
|
|
30 return -6;
|
|
|
31 default:
|
|
|
32 abort ();
|
|
|
33 }
|
|
|
34 return 0;
|
|
|
35 }
|
|
|
36
|
|
|
37 __attribute__((noinline)) int
|
|
|
38 myopenva (const char *path, int oflag, ...)
|
|
|
39 {
|
|
|
40 int mode = 0;
|
|
|
41 va_list ap;
|
|
|
42 if ((oflag & 0x40) != 0)
|
|
|
43 {
|
|
|
44 va_start (ap, oflag);
|
|
|
45 mode = va_arg (ap, int);
|
|
|
46 va_end (ap);
|
|
|
47 }
|
|
|
48 if (expected_char++ != path[0] || path[1] != '\0')
|
|
|
49 abort ();
|
|
|
50 switch (path[0])
|
|
|
51 {
|
|
|
52 case 'a':
|
|
|
53 if (oflag != 0x43 || mode != 0644)
|
|
|
54 abort ();
|
|
|
55 break;
|
|
|
56 case 'b':
|
|
|
57 if (oflag != 0x3)
|
|
|
58 abort ();
|
|
|
59 break;
|
|
|
60 case 'c':
|
|
|
61 if (oflag != 0x2)
|
|
|
62 abort ();
|
|
|
63 break;
|
|
|
64 case 'd':
|
|
|
65 if (oflag != 0x43 || mode != 0600)
|
|
|
66 abort ();
|
|
|
67 break;
|
|
|
68 case 'e':
|
|
|
69 if (oflag != 0x3)
|
|
|
70 abort ();
|
|
|
71 break;
|
|
|
72 default:
|
|
|
73 abort ();
|
|
|
74 }
|
|
|
75 return 0;
|
|
|
76 }
|
|
|
77
|
|
|
78 extern inline __attribute__((always_inline, gnu_inline)) int
|
|
|
79 myopen (const char *path, int oflag, ...)
|
|
|
80 {
|
|
|
81 if (__builtin_va_arg_pack_len () > 1)
|
|
|
82 warn_open_too_many_arguments ();
|
|
|
83
|
|
|
84 if (__builtin_constant_p (oflag))
|
|
|
85 {
|
|
|
86 if ((oflag & 0x40) != 0 && __builtin_va_arg_pack_len () < 1)
|
|
|
87 {
|
|
|
88 error_open_missing_mode ();
|
|
|
89 return myopen2 (path, oflag);
|
|
|
90 }
|
|
|
91 return myopenva (path, oflag, __builtin_va_arg_pack ());
|
|
|
92 }
|
|
|
93
|
|
|
94 if (__builtin_va_arg_pack_len () < 1)
|
|
|
95 return myopen2 (path, oflag);
|
|
|
96
|
|
|
97 return myopenva (path, oflag, __builtin_va_arg_pack ());
|
|
|
98 }
|
|
|
99
|
|
|
100 volatile int l0;
|
|
|
101
|
|
|
102 int
|
|
|
103 main (void)
|
|
|
104 {
|
|
|
105 expected_char = 'a';
|
|
|
106 if (myopen ("a", 0x43, 0644))
|
|
|
107 abort ();
|
|
|
108 if (myopen ("b", 0x3, 0755))
|
|
|
109 abort ();
|
|
|
110 if (myopen ("c", 0x2))
|
|
|
111 abort ();
|
|
|
112 if (myopen ("d", l0 + 0x43, 0600))
|
|
|
113 abort ();
|
|
|
114 if (myopen ("e", l0 + 0x3, 0700))
|
|
|
115 abort ();
|
|
|
116 if (myopen ("f", l0 + 0x2))
|
|
|
117 abort ();
|
|
|
118 /* Invalid use of myopen, but only detectable at runtime. */
|
|
|
119 if (myopen ("g", l0 + 0x43) != -6)
|
|
|
120 abort ();
|
|
|
121 return 0;
|
|
|
122 }
|
