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Add -Wdeprecated to test suite and fix associated warnings (#1191)
This commit turns on `-Wdeprecated` in the test suite and fixes several associated deprecation warnings that show up as a result: - in C++17 `static constexpr` members are implicitly inline; our redeclaration (needed for C++11/14) is deprecated in C++17. - various test suite classes have destructors and rely on implicit copy constructors, but implicit copy constructor definitions when a user-declared destructor is present was deprecated in C++11. - Eigen also has various implicit copy constructors, so just disable `-Wdeprecated` in `eigen.h`.
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@ -25,9 +25,13 @@ template <typename T> struct format_descriptor<std::complex<T>, detail::enable_i
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static std::string format() { return std::string(value); }
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};
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#ifndef PYBIND11_CPP17
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template <typename T> constexpr const char format_descriptor<
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std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>>::value[3];
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#endif
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NAMESPACE_BEGIN(detail)
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template <typename T> struct is_fmt_numeric<std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>> {
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@ -704,9 +704,13 @@ template <typename T> struct format_descriptor<T, detail::enable_if_t<std::is_ar
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static std::string format() { return std::string(1, c); }
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};
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#if !defined(PYBIND11_CPP17)
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template <typename T> constexpr const char format_descriptor<
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T, detail::enable_if_t<std::is_arithmetic<T>::value>>::value[2];
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#endif
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/// RAII wrapper that temporarily clears any Python error state
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struct error_scope {
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PyObject *type, *value, *trace;
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@ -17,6 +17,11 @@
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wconversion"
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# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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# ifdef __clang__
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// Eigen generates a bunch of implicit-copy-constructor-is-deprecated warnings with -Wdeprecated
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// under Clang, so disable that warning here:
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# pragma GCC diagnostic ignored "-Wdeprecated"
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# endif
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# if __GNUC__ >= 7
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# pragma GCC diagnostic ignored "-Wint-in-bool-context"
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# endif
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@ -295,6 +295,9 @@ public:
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PyErr_Fetch(&type.ptr(), &value.ptr(), &trace.ptr());
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}
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error_already_set(const error_already_set &) = default;
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error_already_set(error_already_set &&) = default;
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inline ~error_already_set();
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/// Give the currently-held error back to Python, if any. If there is currently a Python error
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@ -124,7 +124,7 @@ function(pybind11_enable_warnings target_name)
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if(MSVC)
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target_compile_options(${target_name} PRIVATE /W4)
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else()
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target_compile_options(${target_name} PRIVATE -Wall -Wextra -Wconversion -Wcast-qual)
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target_compile_options(${target_name} PRIVATE -Wall -Wextra -Wconversion -Wcast-qual -Wdeprecated)
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endif()
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if(PYBIND11_WERROR)
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@ -36,6 +36,8 @@ TEST_SUBMODULE(call_policies, m) {
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class Child {
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public:
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Child() { py::print("Allocating child."); }
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Child(const Child &) = default;
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Child(Child &&) = default;
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~Child() { py::print("Releasing child."); }
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};
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py::class_<Child>(m, "Child")
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@ -14,6 +14,9 @@
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TEST_SUBMODULE(class_, m) {
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// test_instance
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struct NoConstructor {
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NoConstructor() = default;
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NoConstructor(const NoConstructor &) = default;
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NoConstructor(NoConstructor &&) = default;
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static NoConstructor *new_instance() {
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auto *ptr = new NoConstructor();
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print_created(ptr, "via new_instance");
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@ -82,7 +85,12 @@ TEST_SUBMODULE(class_, m) {
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m.def("dog_bark", [](const Dog &dog) { return dog.bark(); });
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// test_automatic_upcasting
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struct BaseClass { virtual ~BaseClass() {} };
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struct BaseClass {
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BaseClass() = default;
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BaseClass(const BaseClass &) = default;
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BaseClass(BaseClass &&) = default;
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virtual ~BaseClass() {}
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};
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struct DerivedClass1 : BaseClass { };
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struct DerivedClass2 : BaseClass { };
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@ -49,7 +49,14 @@ namespace test_exc_sp {
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int f1(int x) noexcept { return x+1; }
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int f2(int x) noexcept(true) { return x+2; }
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int f3(int x) noexcept(false) { return x+3; }
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#if defined(__GNUG__)
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wdeprecated"
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#endif
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int f4(int x) throw() { return x+4; } // Deprecated equivalent to noexcept(true)
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#if defined(__GNUG__)
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# pragma GCC diagnostic pop
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#endif
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struct C {
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int m1(int x) noexcept { return x-1; }
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int m2(int x) const noexcept { return x-2; }
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@ -57,8 +64,15 @@ struct C {
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int m4(int x) const noexcept(true) { return x-4; }
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int m5(int x) noexcept(false) { return x-5; }
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int m6(int x) const noexcept(false) { return x-6; }
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#if defined(__GNUG__)
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wdeprecated"
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#endif
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int m7(int x) throw() { return x-7; }
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int m8(int x) const throw() { return x-8; }
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#if defined(__GNUG__)
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# pragma GCC diagnostic pop
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#endif
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};
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}
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@ -285,6 +285,7 @@ TEST_SUBMODULE(factory_constructors, m) {
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// test_reallocations
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// Class that has verbose operator_new/operator_delete calls
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struct NoisyAlloc {
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NoisyAlloc(const NoisyAlloc &) = default;
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NoisyAlloc(int i) { py::print(py::str("NoisyAlloc(int {})").format(i)); }
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NoisyAlloc(double d) { py::print(py::str("NoisyAlloc(double {})").format(d)); }
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~NoisyAlloc() { py::print("~NoisyAlloc()"); }
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@ -130,8 +130,8 @@ TEST_SUBMODULE(multiple_inheritance, m) {
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// test_mi_unaligned_base
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// test_mi_base_return
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// Issue #801: invalid casting to derived type with MI bases
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struct I801B1 { int a = 1; virtual ~I801B1() = default; };
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struct I801B2 { int b = 2; virtual ~I801B2() = default; };
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struct I801B1 { int a = 1; I801B1() = default; I801B1(const I801B1 &) = default; virtual ~I801B1() = default; };
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struct I801B2 { int b = 2; I801B2() = default; I801B2(const I801B2 &) = default; virtual ~I801B2() = default; };
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struct I801C : I801B1, I801B2 {};
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struct I801D : I801C {}; // Indirect MI
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// Unregistered classes:
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@ -205,7 +205,7 @@ TEST_SUBMODULE(multiple_inheritance, m) {
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// test_diamond_inheritance
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// Issue #959: segfault when constructing diamond inheritance instance
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// All of these have int members so that there will be various unequal pointers involved.
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struct B { int b; virtual ~B() = default; };
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struct B { int b; B() = default; B(const B&) = default; virtual ~B() = default; };
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struct C0 : public virtual B { int c0; };
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struct C1 : public virtual B { int c1; };
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struct D : public C0, public C1 { int d; };
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@ -98,6 +98,7 @@ TEST_SUBMODULE(smart_ptr, m) {
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// Object managed by a std::shared_ptr<>
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class MyObject2 {
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public:
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MyObject2(const MyObject2 &) = default;
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MyObject2(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject2[" + std::to_string(value) + "]"; }
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virtual ~MyObject2() { print_destroyed(this); }
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@ -116,6 +117,7 @@ TEST_SUBMODULE(smart_ptr, m) {
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// Object managed by a std::shared_ptr<>, additionally derives from std::enable_shared_from_this<>
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class MyObject3 : public std::enable_shared_from_this<MyObject3> {
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public:
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MyObject3(const MyObject3 &) = default;
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MyObject3(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject3[" + std::to_string(value) + "]"; }
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virtual ~MyObject3() { print_destroyed(this); }
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@ -219,6 +221,8 @@ TEST_SUBMODULE(smart_ptr, m) {
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// Issue #865: shared_from_this doesn't work with virtual inheritance
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struct SharedFromThisVBase : std::enable_shared_from_this<SharedFromThisVBase> {
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SharedFromThisVBase() = default;
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SharedFromThisVBase(const SharedFromThisVBase &) = default;
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virtual ~SharedFromThisVBase() = default;
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};
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struct SharedFromThisVirt : virtual SharedFromThisVBase {};
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