1
2 #include <signal.h>
3 #include <stdio.h>
4 #if !defined(_AIX)
5 # include <sys/syscall.h>
6 #endif
7 #include <unistd.h>
8
9 // Reg test for bug #93328: we were using too-big sigset types, and thus
10 // trashing memory when we wrote out the 'oldset' param from sigprocmask().
11
main(void)12 int main(void)
13 {
14 #if defined(__NR_sigprocmask) \
15 && !defined(__powerpc64__) \
16 && !defined(_AIX) \
17 && !defined(__arm__)
18
19 // arm-linux uses rt_sigprocmask, so no sigset mangling takes place
20
21 int x[6], *s, *os, i;
22
23 x[0] = 0x11111111;
24 x[1] = 0x89abcdef;
25 x[2] = 0x22222222;
26 x[3] = 0x33333333;
27 x[4] = 0x0;
28 x[5] = 0x44444444;
29
30 s = &x[1];
31 os = &x[4];
32
33 // Make sure the system is in a known state with no signals
34 // blocked as perl has been known to leave some signals blocked
35 // when starting child processes which can cause failures in
36 // this test unless we reset things here.
37 syscall(__NR_sigprocmask, SIG_SETMASK, os, NULL);
38
39 fprintf(stderr, "before\n");
40 for (i = 0; i < 6; i++) {
41 fprintf(stderr, "%x ", x[i]);
42 }
43 fprintf(stderr, "\n");
44
45 syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
46
47 fprintf(stderr, "after1\n");
48 for (i = 0; i < 6; i++) {
49 fprintf(stderr, "%x ", x[i]);
50 }
51 fprintf(stderr, "\n");
52
53 syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
54
55 fprintf(stderr, "after2\n");
56 for (i = 0; i < 6; i++) {
57 fprintf(stderr, "%x ", x[i]);
58 }
59 fprintf(stderr, "\n");
60
61 #else
62
63 fprintf(stderr, "__NR_sigprocmask not supported on this platform\n");
64
65 #endif
66
67 return(0);
68 }
69