Difference between
modified post 8ad53a3 by Anonymous on Fri 22nd Feb 2019 15:44
original post 92b6 by Anonymous on Thu 17th Jan 2019 08:44
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#include <pthread.h>

1	1		#include <pthread.h>
2	2		#include <stdio.h>
3	3		#include <stdlib.h>
4	4		#include <unistd.h>
5	5		#include <signal.h>
6	6		#include <errno.h>
7	7
8	8		/* Simple error handling functions */
9	9
10	10		#define handle_error_en(en, msg) \
11	11		do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)
12	12
13	13
14	14		int main(int ac, char *av[])
15	15		{
16	16		sigset_t set;
17	17		int i;
18	18		char buff[512];
19	19
20	20		(void)puts("#start");
21	21
22	22		sigemptyset(&set);
23	23		sigaddset(&set, SIGRTMIN+2);
24	24		sigaddset(&set, SIGRTMIN+3);
25	25		i = pthread_sigmask(SIG_BLOCK, &set, NULL);
26	26		if (i != 0)
27	27		handle_error_en(i, "pthread_sigmask() failed");
28	28
29	29		(void)puts("#mark1");
30	30
31	31		/*
32	32		* stupid /bin/kill in Linux cannot handle realtime signal
33	33		* names, so we pass the signal number instead
34	34		*/
35		-	(void)snprintf(buff, sizeof(buff), "kill -s %d %d", SIGRTMIN+2, getpid());
	35	+	(void)snprintf(buff, sizeof(buff), "kill -s %d %ld", (int)SIGRTMIN+2, (long)getpid());
36		-	(void)printf("# executing %s\n", buff);
	36	+	(void)printf("# executing '%s'\n", buff);
37	37		(void)system(buff);
38	38
39	39		(void)puts("#mark2");
40	40
41	41		(void)sleep(2);
42	42		(void)puts("#mark3");
43	43
44	44		i = pthread_sigmask(SIG_UNBLOCK, &set, NULL);
45	45		if (i != 0)
46	46		handle_error_en(i, "pthread_sigmask() failed");
47	47
48	48		/*
49	49		* unblocking the SIGRTMIN signals will trigger the default handler for
50	50		* the SIGRT signals, which terminates the process, so we will never reach
51	51		* this point in the program
52	52		*/
53	53		(void)puts("#notreached");
54	54
55	55		return EXIT_SUCCESS;
56	56		}
57	57
58	58