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135d0b832e
In at least some libstdc++ versions, std::pair (which we want to be memmovable) inherits from __pair_base. We have a similar setup already for __atomic_base. Differential Revision: https://phabricator.services.mozilla.com/D23698 --HG-- extra : moz-landing-system : lando
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MemMoveAnnotation_h__
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#define MemMoveAnnotation_h__
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#include "CustomMatchers.h"
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#include "CustomTypeAnnotation.h"
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#include "Utils.h"
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class MemMoveAnnotation final : public CustomTypeAnnotation {
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public:
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MemMoveAnnotation()
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: CustomTypeAnnotation(moz_non_memmovable, "non-memmove()able") {}
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virtual ~MemMoveAnnotation() {}
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protected:
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std::string getImplicitReason(const TagDecl *D) const override {
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// Annotate everything in ::std, with a few exceptions; see bug
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// 1201314 for discussion.
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if (getDeclarationNamespace(D) == "std") {
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// This doesn't check that it's really ::std::pair and not
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// ::std::something_else::pair, but should be good enough.
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StringRef Name = getNameChecked(D);
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if (Name == "pair" || Name == "atomic" ||
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// libstdc++ specific names
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Name == "__atomic_base" || Name == "atomic_bool" ||
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Name == "__pair_base" ||
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// MSVCRT specific names
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Name == "_Atomic_impl" || Name == "_Atomic_base" ||
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Name == "_Atomic_bool" || Name == "_Atomic_char" ||
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Name == "_Atomic_schar" || Name == "_Atomic_uchar" ||
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Name == "_Atomic_char16_t" || Name == "_Atomic_char32_t" ||
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Name == "_Atomic_wchar_t" || Name == "_Atomic_short" ||
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Name == "_Atomic_ushort" || Name == "_Atomic_int" ||
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Name == "_Atomic_uint" || Name == "_Atomic_long" ||
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Name == "_Atomic_ulong" || Name == "_Atomic_llong" ||
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Name == "_Atomic_ullong" || Name == "_Atomic_address") {
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return "";
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}
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return "it is an stl-provided type not guaranteed to be memmove-able";
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}
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return "";
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}
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};
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extern MemMoveAnnotation NonMemMovable;
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#endif
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