1 /* PR optimization/8634 */
2 /* Contributed by Glen Nakamura <glen at imodulo dot com> */
3
4 extern void abort (void);
5
6 struct foo {
7 char a, b, c, d, e, f, g, h, i, j;
8 };
9
test1()10 int test1 ()
11 {
12 const char X[8] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H' };
13 char buffer[8];
14 __builtin_memcpy (buffer, X, 8);
15 if (buffer[0] != 'A' || buffer[1] != 'B'
16 || buffer[2] != 'C' || buffer[3] != 'D'
17 || buffer[4] != 'E' || buffer[5] != 'F'
18 || buffer[6] != 'G' || buffer[7] != 'H')
19 abort ();
20 return 0;
21 }
22
test2()23 int test2 ()
24 {
25 const char X[10] = { 'A', 'B', 'C', 'D', 'E' };
26 char buffer[10];
27 __builtin_memcpy (buffer, X, 10);
28 if (buffer[0] != 'A' || buffer[1] != 'B'
29 || buffer[2] != 'C' || buffer[3] != 'D'
30 || buffer[4] != 'E' || buffer[5] != '\0'
31 || buffer[6] != '\0' || buffer[7] != '\0'
32 || buffer[8] != '\0' || buffer[9] != '\0')
33 abort ();
34 return 0;
35 }
36
test3()37 int test3 ()
38 {
39 const struct foo X = { a : 'A', c : 'C', e : 'E', g : 'G', i : 'I' };
40 char buffer[10];
41 __builtin_memcpy (buffer, &X, 10);
42 if (buffer[0] != 'A' || buffer[1] != '\0'
43 || buffer[2] != 'C' || buffer[3] != '\0'
44 || buffer[4] != 'E' || buffer[5] != '\0'
45 || buffer[6] != 'G' || buffer[7] != '\0'
46 || buffer[8] != 'I' || buffer[9] != '\0')
47 abort ();
48 return 0;
49 }
50
test4()51 int test4 ()
52 {
53 const struct foo X = { .b = 'B', .d = 'D', .f = 'F', .h = 'H' , .j = 'J' };
54 char buffer[10];
55 __builtin_memcpy (buffer, &X, 10);
56 if (buffer[0] != '\0' || buffer[1] != 'B'
57 || buffer[2] != '\0' || buffer[3] != 'D'
58 || buffer[4] != '\0' || buffer[5] != 'F'
59 || buffer[6] != '\0' || buffer[7] != 'H'
60 || buffer[8] != '\0' || buffer[9] != 'J')
61 abort ();
62 return 0;
63 }
64
main()65 int main ()
66 {
67 test1 (); test2 (); test3 (); test4 ();
68 return 0;
69 }
70