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1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify -std=c++11 %s
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2
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3 // Make sure we handle contexts correctly with sizeof
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4 template<typename T> void f(T n) {
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5 int buffer[n];
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6 [] { int x = sizeof(sizeof(buffer)); }();
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7 }
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8 int main() {
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9 f<int>(1);
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10 }
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11
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12 // Make sure we handle references to non-static data members in unevaluated
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13 // contexts in class template methods correctly. Previously we assumed these
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14 // would be valid MemberRefExprs, but they have no 'this' so we need to form a
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15 // DeclRefExpr to the FieldDecl instead.
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16 // PR26893
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17 template <class T>
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18 struct M {
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19 M() {}; // expected-note {{in instantiation of default member initializer 'M<S>::m' requested here}}
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20 int m = *T::x; // expected-error {{invalid use of non-static data member 'x'}}
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21 void f() {
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22 // These are valid.
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23 static_assert(sizeof(T::x) == 8, "ptr");
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24 static_assert(sizeof(*T::x) == 4, "int");
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25 }
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26 };
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27 struct S { int *x; };
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28 template struct M<S>; // expected-note {{in instantiation of member function 'M<S>::M' requested here}}
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29
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30 // Similar test case for PR26893.
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31 template <typename T=void>
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32 struct bar {
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33 struct foo { int array[10]; };
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34 int baz() { return sizeof(foo::array); }
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35 };
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36 template struct bar<>;
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