X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=unittests%2FSupport%2FAlignOfTest.cpp;h=40f729585728cc193fff4f3f98151eb13f2a2387;hb=7172b38af7ed5d1c1e2c97fadfb0ae0c19aff816;hp=c413451f9046ef8a4cfb99d8bf142395cc4ac57c;hpb=9755cd600f7a1bbdc080bbfcbd2529a54e1b3aab;p=oota-llvm.git

diff --git a/unittests/Support/AlignOfTest.cpp b/unittests/Support/AlignOfTest.cpp
index c413451f904..40f72958572 100644
--- a/unittests/Support/AlignOfTest.cpp
+++ b/unittests/Support/AlignOfTest.cpp
@@ -1,4 +1,4 @@
-//===- llvm/unittest/Support/AlignOfTest.cpp - Alignment utility tests ----===//
+//=== - llvm/unittest/Support/AlignOfTest.cpp - Alignment utility tests ----===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -9,39 +9,49 @@
 
 #include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Compiler.h"
-
 #include "gtest/gtest.h"
 
 using namespace llvm;
 
 namespace {
+// Disable warnings about questionable type definitions.
+// We're testing that even questionable types work with the alignment utilities.
+#ifdef _MSC_VER
+#pragma warning(disable:4584)
+#endif
+
+// Suppress direct base '{anonymous}::S1' inaccessible in '{anonymous}::D9'
+// due to ambiguity warning.
+//
+// Pragma based warning suppression was introduced in GGC 4.2.  Additionally
+// this warning is "enabled by default".  The warning still appears if -Wall is
+// suppressed.  Apparently GCC suppresses it when -w is specifed, which is odd.
+// At any rate, clang on the other hand gripes about -Wunknown-pragma, so
+// leaving it out of this.
+#if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402 && !defined(__clang__)
+#pragma GCC diagnostic warning "-w"
+#endif
 
 // Define some fixed alignment types to use in these tests.
-#if __cplusplus == 201103L || __has_feature(cxx_alignas)
-typedef char alignas(1) A1;
-typedef char alignas(2) A2;
-typedef char alignas(4) A4;
-typedef char alignas(8) A8;
-#elif defined(__clang__) || defined(__GNUC__)
-typedef char A1 __attribute__((aligned(1)));
-typedef char A2 __attribute__((aligned(2)));
-typedef char A4 __attribute__((aligned(4)));
-typedef char A8 __attribute__((aligned(8)));
+#if __has_feature(cxx_alignas)
+struct alignas(1) A1 { };
+struct alignas(2) A2 { };
+struct alignas(4) A4 { };
+struct alignas(8) A8 { };
+#elif defined(__GNUC__)
+struct A1 { } __attribute__((aligned(1)));
+struct A2 { } __attribute__((aligned(2)));
+struct A4 { } __attribute__((aligned(4)));
+struct A8 { } __attribute__((aligned(8)));
 #elif defined(_MSC_VER)
-typedef __declspec(align(1)) char A1;
-typedef __declspec(align(2)) char A2;
-typedef __declspec(align(4)) char A4;
-typedef __declspec(align(8)) char A8;
+__declspec(align(1)) struct A1 { };
+__declspec(align(2)) struct A2 { };
+__declspec(align(4)) struct A4 { };
+__declspec(align(8)) struct A8 { };
 #else
 # error No supported align as directive.
 #endif
 
-// Wrap the forced aligned types in structs to hack around compiler bugs.
-struct SA1 { A1 a; };
-struct SA2 { A2 a; };
-struct SA4 { A4 a; };
-struct SA8 { A8 a; };
-
 struct S1 {};
 struct S2 { char a; };
 struct S3 { int x; };
@@ -66,6 +76,17 @@ struct V6 : S1 { virtual ~V6(); };
 struct V7 : virtual V2, virtual V6 { virtual ~V7(); };
 struct V8 : V5, virtual V6, V7 { double zz; virtual ~V8(); };
 
+double S6::f() { return 0.0; }
+float D2::g() { return 0.0f; }
+V1::~V1() {}
+V2::~V2() {}
+V3::~V3() {}
+V4::~V4() {}
+V5::~V5() {}
+V6::~V6() {}
+V7::~V7() {}
+V8::~V8() {}
+
 // Ensure alignment is a compile-time constant.
 char LLVM_ATTRIBUTE_UNUSED test_arr1
   [AlignOf<char>::Alignment > 0]
@@ -84,11 +105,7 @@ char LLVM_ATTRIBUTE_UNUSED test_arr2
   [AlignOf<A1>::Alignment > 0]
   [AlignOf<A2>::Alignment > 0]
   [AlignOf<A4>::Alignment > 0]
-  [AlignOf<A8>::Alignment > 0]
-  [AlignOf<SA1>::Alignment > 0]
-  [AlignOf<SA2>::Alignment > 0]
-  [AlignOf<SA4>::Alignment > 0]
-  [AlignOf<SA8>::Alignment > 0];
+  [AlignOf<A8>::Alignment > 0];
 char LLVM_ATTRIBUTE_UNUSED test_arr3
   [AlignOf<S1>::Alignment > 0]
   [AlignOf<S2>::Alignment > 0]
@@ -117,20 +134,10 @@ char LLVM_ATTRIBUTE_UNUSED test_arr5
   [AlignOf<V8>::Alignment > 0];
 
 TEST(AlignOfTest, BasicAlignmentInvariants) {
-  // For a very strange reason, many compilers do not support this. Both Clang
-  // and GCC fail to align these properly.
-  EXPECT_EQ(1u, alignOf<A1>());
-#if 0
-  EXPECT_EQ(2u, alignOf<A2>());
-  EXPECT_EQ(4u, alignOf<A4>());
-  EXPECT_EQ(8u, alignOf<A8>());
-#endif
-
-  // But once wrapped in structs, the alignment is correctly managed.
-  EXPECT_LE(1u, alignOf<SA1>());
-  EXPECT_LE(2u, alignOf<SA2>());
-  EXPECT_LE(4u, alignOf<SA4>());
-  EXPECT_LE(8u, alignOf<SA8>());
+  EXPECT_LE(1u, alignOf<A1>());
+  EXPECT_LE(2u, alignOf<A2>());
+  EXPECT_LE(4u, alignOf<A4>());
+  EXPECT_LE(8u, alignOf<A8>());
 
   EXPECT_EQ(1u, alignOf<char>());
   EXPECT_LE(alignOf<char>(),   alignOf<short>());
@@ -139,7 +146,7 @@ TEST(AlignOfTest, BasicAlignmentInvariants) {
   EXPECT_LE(alignOf<long>(),   alignOf<long long>());
   EXPECT_LE(alignOf<char>(),   alignOf<float>());
   EXPECT_LE(alignOf<float>(),  alignOf<double>());
-  EXPECT_LE(alignOf<double>(), alignOf<long double>());
+  EXPECT_LE(alignOf<char>(),   alignOf<long double>());
   EXPECT_LE(alignOf<char>(),   alignOf<void *>());
   EXPECT_EQ(alignOf<void *>(), alignOf<int *>());
   EXPECT_LE(alignOf<char>(),   alignOf<S1>());
@@ -168,85 +175,161 @@ TEST(AlignOfTest, BasicAlignmentInvariants) {
 }
 
 TEST(AlignOfTest, BasicAlignedArray) {
-  // Note: this code exclusively uses the struct-wrapped arbitrarily aligned
-  // types because of the bugs mentioned above where GCC and Clang both
-  // disregard the arbitrary alignment specifier until the type is used to
-  // declare a member of a struct.
-  EXPECT_LE(1u, alignOf<AlignedCharArray<SA1>::union_type>());
-  EXPECT_LE(2u, alignOf<AlignedCharArray<SA2>::union_type>());
-  EXPECT_LE(4u, alignOf<AlignedCharArray<SA4>::union_type>());
-  EXPECT_LE(8u, alignOf<AlignedCharArray<SA8>::union_type>());
-
-  EXPECT_LE(1u, sizeof(AlignedCharArray<SA1>::union_type));
-  EXPECT_LE(2u, sizeof(AlignedCharArray<SA2>::union_type));
-  EXPECT_LE(4u, sizeof(AlignedCharArray<SA4>::union_type));
-  EXPECT_LE(8u, sizeof(AlignedCharArray<SA8>::union_type));
-
-  EXPECT_EQ(1u, (alignOf<AlignedCharArray<SA1>::union_type>()));
-  EXPECT_EQ(2u, (alignOf<AlignedCharArray<SA1, SA2>::union_type>()));
-  EXPECT_EQ(4u, (alignOf<AlignedCharArray<SA1, SA2, SA4>::union_type>()));
-  EXPECT_EQ(8u, (alignOf<AlignedCharArray<SA1, SA2, SA4, SA8>::union_type>()));
-
-  EXPECT_EQ(1u, sizeof(AlignedCharArray<SA1>::union_type));
-  EXPECT_EQ(2u, sizeof(AlignedCharArray<SA1, SA2>::union_type));
-  EXPECT_EQ(4u, sizeof(AlignedCharArray<SA1, SA2, SA4>::union_type));
-  EXPECT_EQ(8u, sizeof(AlignedCharArray<SA1, SA2, SA4, SA8>::union_type));
-
-  EXPECT_EQ(1u, (alignOf<AlignedCharArray<SA1[1]>::union_type>()));
-  EXPECT_EQ(2u, (alignOf<AlignedCharArray<SA1[2], SA2[1]>::union_type>()));
-  EXPECT_EQ(4u, (alignOf<AlignedCharArray<SA1[42], SA2[55],
-                                          SA4[13]>::union_type>()));
-  EXPECT_EQ(8u, (alignOf<AlignedCharArray<SA1[2], SA2[1],
-                                          SA4, SA8>::union_type>()));
-
-  EXPECT_EQ(1u,  sizeof(AlignedCharArray<SA1[1]>::union_type));
-  EXPECT_EQ(2u,  sizeof(AlignedCharArray<SA1[2], SA2[1]>::union_type));
-  EXPECT_EQ(4u,  sizeof(AlignedCharArray<SA1[3], SA2[2], SA4>::union_type));
-  EXPECT_EQ(16u, sizeof(AlignedCharArray<SA1, SA2[3],
-                                         SA4[3], SA8>::union_type));
+  EXPECT_LE(1u, alignOf<AlignedCharArrayUnion<A1> >());
+  EXPECT_LE(2u, alignOf<AlignedCharArrayUnion<A2> >());
+  EXPECT_LE(4u, alignOf<AlignedCharArrayUnion<A4> >());
+  EXPECT_LE(8u, alignOf<AlignedCharArrayUnion<A8> >());
+
+  EXPECT_LE(1u, sizeof(AlignedCharArrayUnion<A1>));
+  EXPECT_LE(2u, sizeof(AlignedCharArrayUnion<A2>));
+  EXPECT_LE(4u, sizeof(AlignedCharArrayUnion<A4>));
+  EXPECT_LE(8u, sizeof(AlignedCharArrayUnion<A8>));
+
+  EXPECT_EQ(1u, (alignOf<AlignedCharArrayUnion<A1> >()));
+  EXPECT_EQ(2u, (alignOf<AlignedCharArrayUnion<A1, A2> >()));
+  EXPECT_EQ(4u, (alignOf<AlignedCharArrayUnion<A1, A2, A4> >()));
+  EXPECT_EQ(8u, (alignOf<AlignedCharArrayUnion<A1, A2, A4, A8> >()));
+
+  EXPECT_EQ(1u, sizeof(AlignedCharArrayUnion<A1>));
+  EXPECT_EQ(2u, sizeof(AlignedCharArrayUnion<A1, A2>));
+  EXPECT_EQ(4u, sizeof(AlignedCharArrayUnion<A1, A2, A4>));
+  EXPECT_EQ(8u, sizeof(AlignedCharArrayUnion<A1, A2, A4, A8>));
+
+  EXPECT_EQ(1u, (alignOf<AlignedCharArrayUnion<A1[1]> >()));
+  EXPECT_EQ(2u, (alignOf<AlignedCharArrayUnion<A1[2], A2[1]> >()));
+  EXPECT_EQ(4u, (alignOf<AlignedCharArrayUnion<A1[42], A2[55],
+                                               A4[13]> >()));
+  EXPECT_EQ(8u, (alignOf<AlignedCharArrayUnion<A1[2], A2[1],
+                                               A4, A8> >()));
+
+  EXPECT_EQ(1u,  sizeof(AlignedCharArrayUnion<A1[1]>));
+  EXPECT_EQ(2u,  sizeof(AlignedCharArrayUnion<A1[2], A2[1]>));
+  EXPECT_EQ(4u,  sizeof(AlignedCharArrayUnion<A1[3], A2[2], A4>));
+  EXPECT_EQ(16u, sizeof(AlignedCharArrayUnion<A1, A2[3],
+                                              A4[3], A8>));
 
   // For other tests we simply assert that the alignment of the union mathes
   // that of the fundamental type and hope that we have any weird type
   // productions that would trigger bugs.
-  EXPECT_EQ(alignOf<char>(), alignOf<AlignedCharArray<char>::union_type>());
-  EXPECT_EQ(alignOf<short>(), alignOf<AlignedCharArray<short>::union_type>());
-  EXPECT_EQ(alignOf<int>(), alignOf<AlignedCharArray<int>::union_type>());
-  EXPECT_EQ(alignOf<long>(), alignOf<AlignedCharArray<long>::union_type>());
+  EXPECT_EQ(alignOf<char>(), alignOf<AlignedCharArrayUnion<char> >());
+  EXPECT_EQ(alignOf<short>(), alignOf<AlignedCharArrayUnion<short> >());
+  EXPECT_EQ(alignOf<int>(), alignOf<AlignedCharArrayUnion<int> >());
+  EXPECT_EQ(alignOf<long>(), alignOf<AlignedCharArrayUnion<long> >());
   EXPECT_EQ(alignOf<long long>(),
-            alignOf<AlignedCharArray<long long>::union_type>());
-  EXPECT_EQ(alignOf<float>(), alignOf<AlignedCharArray<float>::union_type>());
-  EXPECT_EQ(alignOf<double>(), alignOf<AlignedCharArray<double>::union_type>());
+            alignOf<AlignedCharArrayUnion<long long> >());
+  EXPECT_EQ(alignOf<float>(), alignOf<AlignedCharArrayUnion<float> >());
+  EXPECT_EQ(alignOf<double>(), alignOf<AlignedCharArrayUnion<double> >());
   EXPECT_EQ(alignOf<long double>(),
-            alignOf<AlignedCharArray<long double>::union_type>());
-  EXPECT_EQ(alignOf<void *>(), alignOf<AlignedCharArray<void *>::union_type>());
-  EXPECT_EQ(alignOf<int *>(), alignOf<AlignedCharArray<int *>::union_type>());
+            alignOf<AlignedCharArrayUnion<long double> >());
+  EXPECT_EQ(alignOf<void *>(), alignOf<AlignedCharArrayUnion<void *> >());
+  EXPECT_EQ(alignOf<int *>(), alignOf<AlignedCharArrayUnion<int *> >());
   EXPECT_EQ(alignOf<double (*)(double)>(),
-            alignOf<AlignedCharArray<double (*)(double)>::union_type>());
+            alignOf<AlignedCharArrayUnion<double (*)(double)> >());
   EXPECT_EQ(alignOf<double (S6::*)()>(),
-            alignOf<AlignedCharArray<double (S6::*)()>::union_type>());
-  EXPECT_EQ(alignOf<S1>(), alignOf<AlignedCharArray<S1>::union_type>());
-  EXPECT_EQ(alignOf<S2>(), alignOf<AlignedCharArray<S2>::union_type>());
-  EXPECT_EQ(alignOf<S3>(), alignOf<AlignedCharArray<S3>::union_type>());
-  EXPECT_EQ(alignOf<S4>(), alignOf<AlignedCharArray<S4>::union_type>());
-  EXPECT_EQ(alignOf<S5>(), alignOf<AlignedCharArray<S5>::union_type>());
-  EXPECT_EQ(alignOf<S6>(), alignOf<AlignedCharArray<S6>::union_type>());
-  EXPECT_EQ(alignOf<D1>(), alignOf<AlignedCharArray<D1>::union_type>());
-  EXPECT_EQ(alignOf<D2>(), alignOf<AlignedCharArray<D2>::union_type>());
-  EXPECT_EQ(alignOf<D3>(), alignOf<AlignedCharArray<D3>::union_type>());
-  EXPECT_EQ(alignOf<D4>(), alignOf<AlignedCharArray<D4>::union_type>());
-  EXPECT_EQ(alignOf<D5>(), alignOf<AlignedCharArray<D5>::union_type>());
-  EXPECT_EQ(alignOf<D6>(), alignOf<AlignedCharArray<D6>::union_type>());
-  EXPECT_EQ(alignOf<D7>(), alignOf<AlignedCharArray<D7>::union_type>());
-  EXPECT_EQ(alignOf<D8>(), alignOf<AlignedCharArray<D8>::union_type>());
-  EXPECT_EQ(alignOf<D9>(), alignOf<AlignedCharArray<D9>::union_type>());
-  EXPECT_EQ(alignOf<V1>(), alignOf<AlignedCharArray<V1>::union_type>());
-  EXPECT_EQ(alignOf<V2>(), alignOf<AlignedCharArray<V2>::union_type>());
-  EXPECT_EQ(alignOf<V3>(), alignOf<AlignedCharArray<V3>::union_type>());
-  EXPECT_EQ(alignOf<V4>(), alignOf<AlignedCharArray<V4>::union_type>());
-  EXPECT_EQ(alignOf<V5>(), alignOf<AlignedCharArray<V5>::union_type>());
-  EXPECT_EQ(alignOf<V6>(), alignOf<AlignedCharArray<V6>::union_type>());
-  EXPECT_EQ(alignOf<V7>(), alignOf<AlignedCharArray<V7>::union_type>());
-  EXPECT_EQ(alignOf<V8>(), alignOf<AlignedCharArray<V8>::union_type>());
-}
+            alignOf<AlignedCharArrayUnion<double (S6::*)()> >());
+  EXPECT_EQ(alignOf<S1>(), alignOf<AlignedCharArrayUnion<S1> >());
+  EXPECT_EQ(alignOf<S2>(), alignOf<AlignedCharArrayUnion<S2> >());
+  EXPECT_EQ(alignOf<S3>(), alignOf<AlignedCharArrayUnion<S3> >());
+  EXPECT_EQ(alignOf<S4>(), alignOf<AlignedCharArrayUnion<S4> >());
+  EXPECT_EQ(alignOf<S5>(), alignOf<AlignedCharArrayUnion<S5> >());
+  EXPECT_EQ(alignOf<S6>(), alignOf<AlignedCharArrayUnion<S6> >());
+  EXPECT_EQ(alignOf<D1>(), alignOf<AlignedCharArrayUnion<D1> >());
+  EXPECT_EQ(alignOf<D2>(), alignOf<AlignedCharArrayUnion<D2> >());
+  EXPECT_EQ(alignOf<D3>(), alignOf<AlignedCharArrayUnion<D3> >());
+  EXPECT_EQ(alignOf<D4>(), alignOf<AlignedCharArrayUnion<D4> >());
+  EXPECT_EQ(alignOf<D5>(), alignOf<AlignedCharArrayUnion<D5> >());
+  EXPECT_EQ(alignOf<D6>(), alignOf<AlignedCharArrayUnion<D6> >());
+  EXPECT_EQ(alignOf<D7>(), alignOf<AlignedCharArrayUnion<D7> >());
+  EXPECT_EQ(alignOf<D8>(), alignOf<AlignedCharArrayUnion<D8> >());
+  EXPECT_EQ(alignOf<D9>(), alignOf<AlignedCharArrayUnion<D9> >());
+  EXPECT_EQ(alignOf<V1>(), alignOf<AlignedCharArrayUnion<V1> >());
+  EXPECT_EQ(alignOf<V2>(), alignOf<AlignedCharArrayUnion<V2> >());
+  EXPECT_EQ(alignOf<V3>(), alignOf<AlignedCharArrayUnion<V3> >());
+  EXPECT_EQ(alignOf<V4>(), alignOf<AlignedCharArrayUnion<V4> >());
+  EXPECT_EQ(alignOf<V5>(), alignOf<AlignedCharArrayUnion<V5> >());
+  EXPECT_EQ(alignOf<V6>(), alignOf<AlignedCharArrayUnion<V6> >());
+  EXPECT_EQ(alignOf<V7>(), alignOf<AlignedCharArrayUnion<V7> >());
+
+  // Some versions of MSVC get this wrong somewhat disturbingly. The failure
+  // appears to be benign: alignOf<V8>() produces a preposterous value: 12
+#ifndef _MSC_VER
+  EXPECT_EQ(alignOf<V8>(), alignOf<AlignedCharArrayUnion<V8> >());
+#endif
 
+  EXPECT_EQ(sizeof(char), sizeof(AlignedCharArrayUnion<char>));
+  EXPECT_EQ(sizeof(char[1]), sizeof(AlignedCharArrayUnion<char[1]>));
+  EXPECT_EQ(sizeof(char[2]), sizeof(AlignedCharArrayUnion<char[2]>));
+  EXPECT_EQ(sizeof(char[3]), sizeof(AlignedCharArrayUnion<char[3]>));
+  EXPECT_EQ(sizeof(char[4]), sizeof(AlignedCharArrayUnion<char[4]>));
+  EXPECT_EQ(sizeof(char[5]), sizeof(AlignedCharArrayUnion<char[5]>));
+  EXPECT_EQ(sizeof(char[8]), sizeof(AlignedCharArrayUnion<char[8]>));
+  EXPECT_EQ(sizeof(char[13]), sizeof(AlignedCharArrayUnion<char[13]>));
+  EXPECT_EQ(sizeof(char[16]), sizeof(AlignedCharArrayUnion<char[16]>));
+  EXPECT_EQ(sizeof(char[21]), sizeof(AlignedCharArrayUnion<char[21]>));
+  EXPECT_EQ(sizeof(char[32]), sizeof(AlignedCharArrayUnion<char[32]>));
+  EXPECT_EQ(sizeof(short), sizeof(AlignedCharArrayUnion<short>));
+  EXPECT_EQ(sizeof(int), sizeof(AlignedCharArrayUnion<int>));
+  EXPECT_EQ(sizeof(long), sizeof(AlignedCharArrayUnion<long>));
+  EXPECT_EQ(sizeof(long long),
+            sizeof(AlignedCharArrayUnion<long long>));
+  EXPECT_EQ(sizeof(float), sizeof(AlignedCharArrayUnion<float>));
+  EXPECT_EQ(sizeof(double), sizeof(AlignedCharArrayUnion<double>));
+  EXPECT_EQ(sizeof(long double),
+            sizeof(AlignedCharArrayUnion<long double>));
+  EXPECT_EQ(sizeof(void *), sizeof(AlignedCharArrayUnion<void *>));
+  EXPECT_EQ(sizeof(int *), sizeof(AlignedCharArrayUnion<int *>));
+  EXPECT_EQ(sizeof(double (*)(double)),
+            sizeof(AlignedCharArrayUnion<double (*)(double)>));
+  EXPECT_EQ(sizeof(double (S6::*)()),
+            sizeof(AlignedCharArrayUnion<double (S6::*)()>));
+  EXPECT_EQ(sizeof(S1), sizeof(AlignedCharArrayUnion<S1>));
+  EXPECT_EQ(sizeof(S2), sizeof(AlignedCharArrayUnion<S2>));
+  EXPECT_EQ(sizeof(S3), sizeof(AlignedCharArrayUnion<S3>));
+  EXPECT_EQ(sizeof(S4), sizeof(AlignedCharArrayUnion<S4>));
+  EXPECT_EQ(sizeof(S5), sizeof(AlignedCharArrayUnion<S5>));
+  EXPECT_EQ(sizeof(S6), sizeof(AlignedCharArrayUnion<S6>));
+  EXPECT_EQ(sizeof(D1), sizeof(AlignedCharArrayUnion<D1>));
+  EXPECT_EQ(sizeof(D2), sizeof(AlignedCharArrayUnion<D2>));
+  EXPECT_EQ(sizeof(D3), sizeof(AlignedCharArrayUnion<D3>));
+  EXPECT_EQ(sizeof(D4), sizeof(AlignedCharArrayUnion<D4>));
+  EXPECT_EQ(sizeof(D5), sizeof(AlignedCharArrayUnion<D5>));
+  EXPECT_EQ(sizeof(D6), sizeof(AlignedCharArrayUnion<D6>));
+  EXPECT_EQ(sizeof(D7), sizeof(AlignedCharArrayUnion<D7>));
+  EXPECT_EQ(sizeof(D8), sizeof(AlignedCharArrayUnion<D8>));
+  EXPECT_EQ(sizeof(D9), sizeof(AlignedCharArrayUnion<D9>));
+  EXPECT_EQ(sizeof(D9[1]), sizeof(AlignedCharArrayUnion<D9[1]>));
+  EXPECT_EQ(sizeof(D9[2]), sizeof(AlignedCharArrayUnion<D9[2]>));
+  EXPECT_EQ(sizeof(D9[3]), sizeof(AlignedCharArrayUnion<D9[3]>));
+  EXPECT_EQ(sizeof(D9[4]), sizeof(AlignedCharArrayUnion<D9[4]>));
+  EXPECT_EQ(sizeof(D9[5]), sizeof(AlignedCharArrayUnion<D9[5]>));
+  EXPECT_EQ(sizeof(D9[8]), sizeof(AlignedCharArrayUnion<D9[8]>));
+  EXPECT_EQ(sizeof(D9[13]), sizeof(AlignedCharArrayUnion<D9[13]>));
+  EXPECT_EQ(sizeof(D9[16]), sizeof(AlignedCharArrayUnion<D9[16]>));
+  EXPECT_EQ(sizeof(D9[21]), sizeof(AlignedCharArrayUnion<D9[21]>));
+  EXPECT_EQ(sizeof(D9[32]), sizeof(AlignedCharArrayUnion<D9[32]>));
+  EXPECT_EQ(sizeof(V1), sizeof(AlignedCharArrayUnion<V1>));
+  EXPECT_EQ(sizeof(V2), sizeof(AlignedCharArrayUnion<V2>));
+  EXPECT_EQ(sizeof(V3), sizeof(AlignedCharArrayUnion<V3>));
+  EXPECT_EQ(sizeof(V4), sizeof(AlignedCharArrayUnion<V4>));
+  EXPECT_EQ(sizeof(V5), sizeof(AlignedCharArrayUnion<V5>));
+  EXPECT_EQ(sizeof(V6), sizeof(AlignedCharArrayUnion<V6>));
+  EXPECT_EQ(sizeof(V7), sizeof(AlignedCharArrayUnion<V7>));
+
+  // Some versions of MSVC also get this wrong. The failure again appears to be
+  // benign: sizeof(V8) is only 52 bytes, but our array reserves 56.
+#ifndef _MSC_VER
+  EXPECT_EQ(sizeof(V8), sizeof(AlignedCharArrayUnion<V8>));
+#endif
+
+  EXPECT_EQ(1u, (alignOf<AlignedCharArray<1, 1> >()));
+  EXPECT_EQ(2u, (alignOf<AlignedCharArray<2, 1> >()));
+  EXPECT_EQ(4u, (alignOf<AlignedCharArray<4, 1> >()));
+  EXPECT_EQ(8u, (alignOf<AlignedCharArray<8, 1> >()));
+  EXPECT_EQ(16u, (alignOf<AlignedCharArray<16, 1> >()));
+
+  EXPECT_EQ(1u, sizeof(AlignedCharArray<1, 1>));
+  EXPECT_EQ(7u, sizeof(AlignedCharArray<1, 7>));
+  EXPECT_EQ(2u, sizeof(AlignedCharArray<2, 2>));
+  EXPECT_EQ(16u, sizeof(AlignedCharArray<2, 16>));
+}
 }