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Everywhere: Make Lagom build with GCC 13
GCC 13 was released on 2023-04-26. This commit fixes Lagom build errors when using an updated host toolchain: - Adds a workaround for a bug in constraint handling, which made LibJS fail to compile: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109683 - Silences the new `-Wdangling-reference` diagnostic globally. It produces multiple false positives with no clear way to silence them without `#pragmas`. - Silences `-Wself-move` in `RefPtr` tests as GCC 13 adds this previously Clang-exclusive warning.
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1422f7f904
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3 changed files with 10 additions and 9 deletions
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@ -130,15 +130,16 @@ struct VariantConstructTag {
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template<typename T, typename Base>
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struct VariantConstructors {
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// The pointless `typename Base` constraints are a workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109683
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ALWAYS_INLINE VariantConstructors(T&& t)
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requires(requires { T(move(t)); })
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requires(requires { T(move(t)); typename Base; })
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{
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internal_cast().clear_without_destruction();
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internal_cast().set(move(t), VariantNoClearTag {});
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}
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ALWAYS_INLINE VariantConstructors(T const& t)
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requires(requires { T(t); })
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requires(requires { T(t); typename Base; })
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{
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internal_cast().clear_without_destruction();
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internal_cast().set(t, VariantNoClearTag {});
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@ -28,4 +28,7 @@ elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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# Only ignore expansion-to-defined for g++, clang's implementation doesn't complain about function-like macros
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add_compile_options(-Wno-expansion-to-defined)
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add_compile_options(-Wno-literal-suffix)
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# FIXME: This warning seems useful but has too many false positives with GCC 13.
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add_compile_options(-Wno-dangling-reference)
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endif()
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@ -97,14 +97,11 @@ TEST_CASE(assign_moved_self)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT_EQ(object->ref_count(), 1u);
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#if defined(AK_COMPILER_CLANG)
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wself-move"
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#endif
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpragmas"
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#pragma GCC diagnostic ignored "-Wself-move"
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object = move(object);
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#if defined(AK_COMPILER_CLANG)
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# pragma clang diagnostic pop
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#endif
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#pragma GCC diagnostic pop
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EXPECT_EQ(object->ref_count(), 1u);
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}
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