And here's the second attachment.
To: gnats-b...@netbsd.org Subject: sigprocmask return value wrong when libpthread is in use From: br...@clisp.org Reply-To: br...@clisp.org X-send-pr-version: 3.95
>Submitter-Id: net >Originator: >Organization: GNU >Confidential: no >Synopsis: The return value of sigprocmask is not standards compliant >Severity: non-critical >Priority: medium >Category: lib >Class: sw-bug >Release: NetBSD 9.0 >Environment: System: NetBSD netbsd9.bruno.haible.de 9.0 NetBSD 9.0 (GENERIC) #0: Fri Feb 14 00:06:28 UTC 2020 mkre...@mkrepro.netbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC amd64 Architecture: x86_64 Machine: amd64 >Description: When a program that is linked with libpthread uses the sigprocmask function, its return value can be wrong. See https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_sigmask.html section "RETURN VALUE". >How-To-Repeat: Compile this program ==================== foo.c ================ #include <errno.h> #include <signal.h> #include <stdio.h> int main () { sigset_t set; int ret; sigemptyset (&set); sigaddset (&set, SIGINT); ret = sigprocmask (1729, &set, NULL); if (ret == 0) printf ("sigprocmask succeeded!\n"); else printf ("sigprocmask -> %d, errno=%d\n", ret, errno); ret = pthread_sigmask (1729, &set, NULL); if (ret == 0) printf ("pthread_sigmask succeeded!\n"); else printf ("pthread_sigmask -> %d\n", ret); return 0; } ============================================= $ gcc -Wall foo.c -lpthread $ ./a.out Expected output: sigprocmask -> -1, errno=22 pthread_sigmask -> 22 Actual output: sigprocmask -> 22, errno=22 pthread_sigmask -> 22 >Fix:
