Add warnings about keeping alive the library object.

(transplanted from c28026358db53c84e3adc56029f69db0d7f0c58b)

1 files changed, 8 insertions, 0 deletions

diff --git a/doc/source/index.rst b/doc/source/index.rst
index 4a7ec8c..53bd273 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -458,6 +458,10 @@ as ``dlopen()`` does dynamically in C.
 For the optional ``flags`` argument, see ``man dlopen`` (ignored on
 Windows).  It defaults to ``ffi.RTLD_NOW``.
 
+This function returns a "library" object that gets closed when it goes
+out of scope.  Make sure you keep the library object around as long as
+needed.
+
 .. _below:
 
 
@@ -621,6 +625,10 @@ not recommended.
    check.  Be sure to have other means of clearing the ``tmpdir``
    whenever you change your sources.
 
+This function returns a "library" object that gets closed when it goes
+out of scope.  Make sure you keep the library object around as long as
+needed.
+
 
 Working with pointers, structures and arrays
 --------------------------------------------