fork each test so they are isolated

diff --git a/common/main.c b/common/main.c
index 4c28f71..ba330d0 100644 (file)
--- a/common/main.c
+++ b/common/main.c
@@ -1,3 +1,11 @@
+#define _POSIX_C_SOURCE 200809L
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
 #include "test.h"
 
 #define T(t) void t();
@@ -11,12 +19,33 @@ static int count;
 static int nfailed;
 
 static void run(const char *n, void (*f)()) {
+       pid_t pid;
+       int status;
+
        count++;
        test__.failed = 0;
        test__.name = n;
        if (verbose)
                fprintf(stderr, "running %s:\n", test__.name);
-       f();
+
+       pid = fork();
+       if (pid == 0) {
+               /* run test in a child process */
+               f();
+               exit(test__.failed);
+       }
+
+       if (pid == -1)
+               error("fork failed: %s\n", strerror(errno));
+       else {
+               if (waitpid(pid, &status, 0) == -1)
+                       error("waitpid failed: %s\n", strerror(errno));
+               else if (!WIFEXITED(status))
+                       error("abnormal exit: %s\n", WIFSIGNALED(status) ? strsignal(WTERMSIG(status)) : "(unknown)");
+               else
+                       test__.failed = !!WEXITSTATUS(status);
+       }
+
        if (test__.failed) {
                nfailed++;
                fprintf(stderr, "FAILED %s\n", test__.name);