diff options
Diffstat (limited to 'REORG.TODO/posix/test-vfork.c')
-rw-r--r-- | REORG.TODO/posix/test-vfork.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/REORG.TODO/posix/test-vfork.c b/REORG.TODO/posix/test-vfork.c new file mode 100644 index 0000000000..6dfb7d47e3 --- /dev/null +++ b/REORG.TODO/posix/test-vfork.c @@ -0,0 +1,42 @@ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <error.h> +#include <errno.h> +#include <sys/wait.h> + +void __attribute_noinline__ noop (void); + +#define NR 2 /* Exit code of the child. */ + +int +main (void) +{ + pid_t pid; + int status; + + printf ("Before vfork\n"); + fflush (stdout); + pid = vfork (); + if (pid == 0) + { + /* This will clobber the return pc from vfork in the parent on + machines where it is stored on the stack, if vfork wasn't + implemented correctly, */ + noop (); + _exit (NR); + } + else if (pid < 0) + error (1, errno, "vfork"); + printf ("After vfork (parent)\n"); + if (waitpid (0, &status, 0) != pid + || !WIFEXITED (status) || WEXITSTATUS (status) != NR) + exit (1); + + return 0; +} + +void +noop (void) +{ +} |