Cleanup of file-scoped and globally-scoped warning suppression pragmas across pybind11 header files. (#3201)

* Removing all MSVC C4127 warning suppression pragmas.

* Removing MSVC /WX (WERROR). To get a full list of all warnings.

* Inserting PYBIND11_SILENCE_MSVC_C4127. Changing one runtime if to #if.

* Changing PYBIND11_SILENCE_MSVC_C4127 macro to use absolute namespace (for use outside pybind11 include directory).

* Restoring MSVC /WX (WERROR).

* Removing globally-scoped suppression for clang -Wunsequenced. Based on an experiment under PR #3202 it is obsolete and can simply be removed.
This commit is contained in:
Ralf W. Grosse-Kunstleve 2021-08-19 11:37:04 -07:00 committed by GitHub
parent 774b5ff90b
commit 998d45e431
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5 changed files with 10 additions and 42 deletions

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@ -968,7 +968,7 @@ inline void silence_unused_warnings(Args &&...) {}
// warning C4127: Conditional expression is constant
constexpr inline bool silence_msvc_c4127(bool cond) { return cond; }
# define PYBIND11_SILENCE_MSVC_C4127(...) detail::silence_msvc_c4127(__VA_ARGS__)
# define PYBIND11_SILENCE_MSVC_C4127(...) ::pybind11::detail::silence_msvc_c4127(__VA_ARGS__)
#else
# define PYBIND11_SILENCE_MSVC_C4127(...) __VA_ARGS__

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@ -25,11 +25,6 @@
#include <vector>
#include <typeindex>
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
#endif
/* This will be true on all flat address space platforms and allows us to reduce the
whole npy_intp / ssize_t / Py_intptr_t business down to just ssize_t for all size
and dimension types (e.g. shape, strides, indexing), instead of inflicting this
@ -747,7 +742,7 @@ public:
* and the caller must take care not to access invalid dimensions or dimension indices.
*/
template <typename T, ssize_t Dims = -1> detail::unchecked_mutable_reference<T, Dims> mutable_unchecked() & {
if (Dims >= 0 && ndim() != Dims)
if (PYBIND11_SILENCE_MSVC_C4127(Dims >= 0) && ndim() != Dims)
throw std::domain_error("array has incorrect number of dimensions: " + std::to_string(ndim()) +
"; expected " + std::to_string(Dims));
return detail::unchecked_mutable_reference<T, Dims>(mutable_data(), shape(), strides(), ndim());
@ -761,7 +756,7 @@ public:
* invalid dimensions or dimension indices.
*/
template <typename T, ssize_t Dims = -1> detail::unchecked_reference<T, Dims> unchecked() const & {
if (Dims >= 0 && ndim() != Dims)
if (PYBIND11_SILENCE_MSVC_C4127(Dims >= 0) && ndim() != Dims)
throw std::domain_error("array has incorrect number of dimensions: " + std::to_string(ndim()) +
"; expected " + std::to_string(Dims));
return detail::unchecked_reference<T, Dims>(data(), shape(), strides(), ndim());
@ -1708,7 +1703,3 @@ Helper vectorize(Return (Class::*f)(Args...) const) {
}
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
#if defined(_MSC_VER)
#pragma warning(pop)
#endif

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@ -11,13 +11,6 @@
#include "pybind11.h"
#if defined(__clang__) && !defined(__INTEL_COMPILER)
# pragma clang diagnostic ignored "-Wunsequenced" // multiple unsequenced modifications to 'self' (when using def(py::self OP Type()))
#elif defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
#endif
PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
PYBIND11_NAMESPACE_BEGIN(detail)
@ -58,7 +51,8 @@ template <op_id id, op_type ot, typename L, typename R> struct op_ {
using op = op_impl<id, ot, Base, L_type, R_type>;
cl.def(op::name(), &op::execute, is_operator(), extra...);
#if PY_MAJOR_VERSION < 3
if (id == op_truediv || id == op_itruediv)
if (PYBIND11_SILENCE_MSVC_C4127(id == op_truediv) ||
PYBIND11_SILENCE_MSVC_C4127(id == op_itruediv))
cl.def(id == op_itruediv ? "__idiv__" : ot == op_l ? "__div__" : "__rdiv__",
&op::execute, is_operator(), extra...);
#endif
@ -167,7 +161,3 @@ using detail::self;
using detail::hash;
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
#if defined(_MSC_VER)
# pragma warning(pop)
#endif

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@ -19,11 +19,6 @@
#include <deque>
#include <valarray>
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
#endif
#ifdef __has_include
// std::optional (but including it in c++14 mode isn't allowed)
# if defined(PYBIND11_CPP17) && __has_include(<optional>)
@ -390,7 +385,3 @@ inline std::ostream &operator<<(std::ostream &os, const handle &obj) {
}
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
#if defined(_MSC_VER)
#pragma warning(pop)
#endif

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@ -10,11 +10,6 @@
#include "pybind11_tests.h"
#include <pybind11/complex.h>
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
#endif
struct ConstRefCasted {
int tag;
};
@ -73,7 +68,7 @@ TEST_SUBMODULE(builtin_casters, m) {
std::wstring wstr;
wstr.push_back(0x61); // a
wstr.push_back(0x2e18); // ⸘
if (sizeof(wchar_t) == 2) { wstr.push_back(mathbfA16_1); wstr.push_back(mathbfA16_2); } // 𝐀, utf16
if (PYBIND11_SILENCE_MSVC_C4127(sizeof(wchar_t) == 2)) { wstr.push_back(mathbfA16_1); wstr.push_back(mathbfA16_2); } // 𝐀, utf16
else { wstr.push_back((wchar_t) mathbfA32); } // 𝐀, utf32
wstr.push_back(0x7a); // z
@ -83,11 +78,12 @@ TEST_SUBMODULE(builtin_casters, m) {
m.def("good_wchar_string", [=]() { return wstr; }); // a‽𝐀z
m.def("bad_utf8_string", []() { return std::string("abc\xd0" "def"); });
m.def("bad_utf16_string", [=]() { return std::u16string({ b16, char16_t(0xd800), z16 }); });
#if PY_MAJOR_VERSION >= 3
// Under Python 2.7, invalid unicode UTF-32 characters don't appear to trigger UnicodeDecodeError
if (PY_MAJOR_VERSION >= 3)
m.def("bad_utf32_string", [=]() { return std::u32string({ a32, char32_t(0xd800), z32 }); });
if (PY_MAJOR_VERSION >= 3 || sizeof(wchar_t) == 2)
if (PYBIND11_SILENCE_MSVC_C4127(sizeof(wchar_t) == 2))
m.def("bad_wchar_string", [=]() { return std::wstring({ wchar_t(0x61), wchar_t(0xd800) }); });
#endif
m.def("u8_Z", []() -> char { return 'Z'; });
m.def("u8_eacute", []() -> char { return '\xe9'; });
m.def("u16_ibang", [=]() -> char16_t { return ib16; });