Issue #437

Support ffi.dlopen(<void* cdata>).  See updated documentation.

1 files changed, 26 insertions, 0 deletions

diff --git a/testing/cffi0/test_ownlib.py b/testing/cffi0/test_ownlib.py
index 9295163..990f259 100644
--- a/testing/cffi0/test_ownlib.py
+++ b/testing/cffi0/test_ownlib.py
@@ -371,3 +371,29 @@ class TestOwnLib(object):
         assert s.top == 22
         assert s.right == 33
         assert s.bottom == 44
+
+    def test_dlopen_handle(self):
+        if self.module is None:
+            py.test.skip("fix the auto-generation of the tiny test lib")
+        if sys.platform == 'win32':
+            py.test.skip("uses 'dl' explicitly")
+        if self.__class__.Backend is CTypesBackend:
+            py.test.skip("not for the ctypes backend")
+        backend = self.Backend()
+        ffi1 = FFI(backend=backend)
+        ffi1.cdef("""void *dlopen(const char *filename, int flags);
+                     int dlclose(void *handle);""")
+        lib1 = ffi1.dlopen('dl')
+        handle = lib1.dlopen(self.module.encode(sys.getfilesystemencoding()),
+                             backend.RTLD_LAZY)
+        assert ffi1.typeof(handle) == ffi1.typeof("void *")
+        assert handle
+
+        ffi = FFI(backend=backend)
+        ffi.cdef("""unsigned short foo_2bytes(unsigned short a);""")
+        lib = ffi.dlopen(handle)
+        x = lib.foo_2bytes(1000)
+        assert x == 1042
+
+        err = lib1.dlclose(handle)
+        assert err == 0