* process.c (recv_child_error): Fix deadlock in rb_fork_internal when a

  signal is sent to the parent process while Ruby is forking in IO.popen.

  Patch by Scott Francis. Closes GH-513.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 1 deletions

diff --git a/process.c b/process.c
index f5d84973c4..6c29423574 100644
--- a/process.c
+++ b/process.c
@@ -3339,8 +3339,11 @@ recv_child_error(int fd, int *statep, VALUE *excp, int *errp, char *errmsg, size
     }
 #define READ_FROM_CHILD(ptr, len) \
     (NIL_P(io) ? read(fd, (ptr), (len)) : rb_io_bufread(io, (ptr), (len)))
-    if ((size = READ_FROM_CHILD(&err, sizeof(err))) < 0) {
+    while ((size = READ_FROM_CHILD(&err, sizeof(err))) < 0) {
         err = errno;
+        if (err != EINTR) {
+            break;
+        }
     }
     *errp = err;
     if (size == sizeof(err) &&