Consistently check for failure from evbuffer_pullup()

Closes issue #148.

1 files changed, 2 insertions, 0 deletions

diff --git a/buffer.c b/buffer.c
index 5fecb25b..fab7d808 100644
--- a/buffer.c
+++ b/buffer.c
@@ -2363,9 +2363,11 @@ evbuffer_write_atmost(struct evbuffer *buffer, evutil_socket_t fd,
 		/* XXX(nickm) Don't disable this code until we know if
 		 * the WSARecv code above works. */
 		void *p = evbuffer_pullup(buffer, howmuch);
+		EVUTIL_ASSERT(p || !howmuch);
 		n = send(fd, p, howmuch, 0);
 #else
 		void *p = evbuffer_pullup(buffer, howmuch);
+		EVUTIL_ASSERT(p || !howmuch);
 		n = write(fd, p, howmuch);
 #endif
 #ifdef USE_SENDFILE