[PATCH] Fix PR20495: correct inference of the CUDA target for implicit members

[Peter Collingbourne]

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Comment at: lib/Sema/SemaDeclCXX.cpp:1
@@ -1,2 +1,1 @@
-//===------ SemaDeclCXX.cpp - Semantic Analysis for C++ Declarations ------===//
 //
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I assume this was a mistake.

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Comment at: test/SemaCUDA/implicit-member-target.cu:146
@@ +145,3 @@
+
+struct B7_with_copy_assign {
+};
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This should derive from `A7_with_copy_assign`, right?

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Comment at: test/SemaCUDA/implicit-member-target.cu:150
@@ +149,3 @@
+void hostfoo7() {
+  A7_with_copy_assign a1, a2;
+  a1 = a2;
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Please update this test once your other patch lands and add the other tests Richard asked for.

http://reviews.llvm.org/D5199