Author: lattner
Date: Tue Jul 19 23:31:01 2011
New Revision: 135565
URL: http://llvm.org/viewvc/llvm-project?rev=135565&view=rev
Log:
fix PR10395 - array decay can produce an interesting type when
decaying an array of incomplete type (which has type [0 x i8]*) to a
normal pointer (which has incompletetype*).
Modified:
cfe/trunk/lib/CodeGen/CGExprScalar.cpp
cfe/trunk/test/CodeGenCXX/init-incomplete-type.cpp
Modified: cfe/trunk/lib/CodeGen/CGExprScalar.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprScalar.cpp?rev=135565&r1=135564&r2=135565&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExprScalar.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExprScalar.cpp Tue Jul 19 23:31:01 2011
@@ -1075,7 +1075,10 @@
V = Builder.CreateStructGEP(V, 0, "arraydecay");
}
- return V;
+ // Make sure the array decay ends up being the right type. This matters if
+ // the array type was of an incomplete type.
+ return CGF.Builder.CreateBitCast(V,
+ CGF.getTypes().ConvertTypeForMem(CE->getType()));
}
case CK_FunctionToPointerDecay:
return EmitLValue(E).getAddress();
Modified: cfe/trunk/test/CodeGenCXX/init-incomplete-type.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/init-incomplete-type.cpp?rev=135565&r1=135564&r2=135565&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/init-incomplete-type.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/init-incomplete-type.cpp Tue Jul 19 23:31:01 2011
@@ -28,4 +28,10 @@
return &g[1];
}
-}
\ No newline at end of file
+}
+
+namespace PR10395 {
+ struct T;
+ extern T x[];
+ T* f() { return x; }
+}
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