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Diffstat (limited to 'clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp')
-rw-r--r-- | clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp new file mode 100644 index 0000000..5dac886 --- /dev/null +++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp @@ -0,0 +1,50 @@ +// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -Wno-lambda-extensions -verify + +void defargs() { + auto l1 = [](int i, int j = 17, int k = 18) { return i + j + k; }; + int i1 = l1(1); + int i2 = l1(1, 2); + int i3 = l1(1, 2, 3); +} + + +void defargs_errors() { + auto l1 = [](int i, + int j = 17, + int k) { }; // expected-error{{missing default argument on parameter 'k'}} + + auto l2 = [](int i, int j = i) {}; // expected-error{{default argument references parameter 'i'}} + + int foo; + auto l3 = [](int i = foo) {}; // expected-error{{default argument references local variable 'foo' of enclosing function}} +} + +struct NonPOD { + NonPOD(); + NonPOD(const NonPOD&); + ~NonPOD(); +}; + +struct NoDefaultCtor { + NoDefaultCtor(const NoDefaultCtor&); // expected-note{{candidate constructor}} + ~NoDefaultCtor(); +}; + +template<typename T> +void defargs_in_template_unused(T t) { + auto l1 = [](const T& value = T()) { }; + l1(t); +} + +template void defargs_in_template_unused(NonPOD); +template void defargs_in_template_unused(NoDefaultCtor); + +template<typename T> +void defargs_in_template_used() { + auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} + l1(); // expected-note{{in instantiation of default function argument expression for 'operator()<NoDefaultCtor>' required here}} +} + +template void defargs_in_template_used<NonPOD>(); +template void defargs_in_template_used<NoDefaultCtor>(); // expected-note{{in instantiation of function template specialization}} + |