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Red Hat Bugzilla – Attachment 598585 Details for
Bug 840782
waitpid returns EINVAL when WNOWAIT is used
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reproducer
reproducer.c (text/plain), 777 bytes, created by
Michal Hlavinka
on 2012-07-17 08:05:37 UTC
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Description:
reproducer
Filename:
MIME Type:
Creator:
Michal Hlavinka
Created:
2012-07-17 08:05:37 UTC
Size:
777 bytes
patch
obsolete
>#include <unistd.h> >#include <errno.h> >#include <sys/types.h> >#include <sys/stat.h> >#include <sys/wait.h> >#include <spawn.h> >#include <signal.h> >#include <fcntl.h> >#include <string.h> >#include <stdio.h> > >int main(int argc, char** argv) >{ > pid_t pid, ret; > int status; > > if ((pid=vfork())==0) > { > _exit(0); > } > > errno = 0; > ret = waitpid(pid, &status, WNOWAIT); > fprintf(stderr, "WNOWAIT waitpid returns %d,\tstatus=%d, errno=%d : %m\n", ret, status, errno); > > errno = 0; > ret = waitpid(pid, &status, WNOHANG); > fprintf(stderr, "WNOHANG waitpid returns %d,\tstatus=%d, errno=%d : %m\n", ret, status, errno); > > errno = 0; > ret = waitpid(pid, &status, 0); > fprintf(stderr, "0 waitpid returns %d,\tstatus=%d, errno=%d : %m\n", ret, status, errno); > > return 0; >} >
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