sigprocmask.c revision 7fbe08a08ea369c3c805280a3260edf5c68dc3ae 
1
2#include <signal.h>
3#include <stdio.h>
4#include <sys/syscall.h>
5#include <unistd.h>
6
7// Reg test for bug #93328: we were using too-big sigset types, and thus
8// trashing memory when we wrote out the 'oldset' param from sigprocmask().
9
10int main(void)
11{
12   int x[6], *s, *os, i;
13
14   x[0] = 0x11111111;
15   x[1] = 0x89abcdef;
16   x[2] = 0x22222222;
17   x[3] = 0x33333333;
18   x[4] = 0x0;
19   x[5] = 0x44444444;
20
21   s  = &x[1];
22   os = &x[4];
23
24   fprintf(stderr, "before\n");
25   for (i = 0; i < 6; i++) {
26      fprintf(stderr, "%x ", x[i]);
27   }
28   fprintf(stderr, "\n");
29
30   syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
31
32   fprintf(stderr, "after1\n");
33   for (i = 0; i < 6; i++) {
34      fprintf(stderr, "%x ", x[i]);
35   }
36   fprintf(stderr, "\n");
37
38   syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
39
40   fprintf(stderr, "after2\n");
41   for (i = 0; i < 6; i++) {
42      fprintf(stderr, "%x ", x[i]);
43   }
44   fprintf(stderr, "\n");
45
46   return(0);
47}
48