merges r23115 from trunk into ruby_1_9_1.

--
* configure.in (rb_cv_fork_with_pthread): fail if the child process
  fail.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@23232 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/configure.in b/configure.in
index 31f259375..b926eb836 100644
--- a/configure.in
+++ b/configure.in
@@ -1232,6 +1232,8 @@ main(int argc, char *argv[])
 	    kill(pid, SIGKILL);
 	    return EXIT_FAILURE;
 	}
+        if (!WIFEXITED(loc) || WEXITSTATUS(loc) != EXIT_SUCCESS)
+           return EXIT_FAILURE;
     }
     else {
 	if (use_threads()) return EXIT_FAILURE;