# HG changeset patch
# User Dirkjan Ochtman <dirkjan@ochtman.nl>
# Date 1307636821 -7200
# Branch 2.7
# Node ID 14dc1b7a1d143c5bb50a01fe2f844dc1448cc60c
# Parent  fe813f5711a50057e45e720454caddff2c614d6c
Issue #9284: fix regression in doctest inspection

diff --git a/Lib/inspect.py b/Lib/inspect.py
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -524,9 +524,13 @@
     or code object.  The source code is returned as a list of all the lines
     in the file and the line number indexes a line in that list.  An IOError
     is raised if the source code cannot be retrieved."""
-    file = getsourcefile(object)
-    if not file:
+
+    file = getfile(object)
+    sourcefile = getsourcefile(object)
+    if not sourcefile and file[0] + file[-1] != '<>':
         raise IOError('source code not available')
+    file = sourcefile if sourcefile else file
+
     module = getmodule(object, file)
     if module:
         lines = linecache.getlines(file, module.__dict__)
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -295,6 +295,20 @@
         del sys.modules[name]
         inspect.getmodule(compile('a=10','','single'))
 
+    def test_doctest(self):
+        '''doctest monkeypatches linecache to enable inspection'''
+        fn, source = '<test>', 'def x(): pass\n'
+        getlines = linecache.getlines
+        def monkey(filename, module_globals=None):
+            if filename == fn:
+                return source.splitlines(True)
+            else:
+                return getlines(filename, module_globals)
+        linecache.getlines = monkey
+        exec compile(source, fn, 'single') in globals()
+        inspect.getsource(x)
+        linecache.getlines = getlines
+
 class TestDecorators(GetSourceBase):
     fodderFile = mod2