Avoid merged-in code picking up directives from main module (GH-3785)

Fixes https://github.com/cython/cython/issues/1071

Cython/Compiler/ModuleNode.py

@@ -97,6 +97,10 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         # CodeGenerator, and tell that CodeGenerator to generate code
         # from multiple sources.
         assert isinstance(self.body, Nodes.StatListNode)
+        if scope.directives != self.scope.directives:
+            # merged in nodes should keep their original compiler directives
+            # (for example inline cdef functions)
+            tree = Nodes.CompilerDirectivesNode(tree.pos, body=tree, directives=scope.directives)
         if isinstance(tree, Nodes.StatListNode):
             self.body.stats.extend(tree.stats)
         else:

tests/run/inlinepxd.pyx

+# mode: run
+# tag: inline, pxd
+
+# cython: wraparound = False
+
 __doc__ = u"""
 >>> f()
 3
@@ -28,3 +33,12 @@ def i():
 
 def j():
     return my_add3(2, 4)
+
+def test_wraparound():
+    """
+    >>> test_wraparound()
+    1.0
+    """
+    # the wraparound directive from this scope should not affect the inline pxd
+    a = [ 0.0, 1.0 ]
+    return inlinepxd_support.index(a)

tests/run/inlinepxd_support.pxd

 
 cdef inline int my_add(int a, int b=1, int c=0):
     return a + b + c
+
+cdef inline index(list L):
+    # This function should *not* be affected by directives set in the outer scope, such as "wraparound".
+    # See https://github.com/cython/cython/issues/1071
+    return L[-1]
+