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-rw-r--r--lib/CodeGen/CGExprComplex.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/CGExprComplex.cpp b/lib/CodeGen/CGExprComplex.cpp
index 89a3a26ed6..7896504d86 100644
--- a/lib/CodeGen/CGExprComplex.cpp
+++ b/lib/CodeGen/CGExprComplex.cpp
@@ -602,7 +602,7 @@ LValue ComplexExprEmitter::EmitBinAssignLValue(const BinaryOperator *E,
TestAndClearIgnoreReal();
TestAndClearIgnoreImag();
- // Emit the RHS.
+ // Emit the RHS. __block variables need the RHS evaluated first.
Val = Visit(E->getRHS());
// Compute the address to store into.