aee4925507
Based on post-commit review discussion on2bd8493847with Richard Smith. Other uses of forcing HasEmptyPlaceHolder to false seem OK to me - they're all around pointer/reference types where the pointer/reference token will appear at the rightmost side of the left side of the type name, so they make nested types (eg: the "int" in "int *") behave as though there is a non-empty placeholder (because the "*" is essentially the placeholder as far as the "int" is concerned). This was originally committed in277623f4d5Reverted inf9ad1d1c77due to breakages outside of clang - lldb seems to have some strange/strong dependence on "char [N]" versus "char[N]" when printing strings (not due to that name appearing in DWARF, but probably due to using clang to stringify type names) that'll need to be addressed, plus a few other odds and ends in other subprojects (clang-tools-extra, compiler-rt, etc).
53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
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// RUN: %clang_cc1 -fsyntax-only -std=c++1y %s -verify -DCPP1Y
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void missing_lambda_declarator() {
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[](){}();
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}
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template<typename T> T get();
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void infer_void_return_type(int i) {
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if (i > 17)
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return []() { }();
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if (i > 11)
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return []() { return; }();
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return [](int x) {
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switch (x) {
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case 0: return get<void>();
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case 1: return;
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case 2: return { 1, 2.0 }; //expected-error{{cannot deduce}}
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}
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}(7);
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}
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struct X { };
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X infer_X_return_type(X x) {
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return [&x](int y) {
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if (y > 0)
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return X();
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else
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return x;
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}(5);
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}
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X infer_X_return_type_2(X x) {
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return [x](int y) {
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if (y > 0)
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return X();
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else
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return x; // ok even in c++11, per dr1048.
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}(5);
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}
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struct Incomplete; // expected-note{{forward declaration of 'Incomplete'}}
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void test_result_type(int N) {
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auto l1 = [] () -> Incomplete { }; // expected-error{{incomplete result type 'Incomplete' in lambda expression}}
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typedef int vla[N];
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auto l2 = [] () -> vla { }; // expected-error{{function cannot return array type 'vla' (aka 'int[N]')}}
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}
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