65134634f9
…tedOrUnsafeBuf…" (#176603) The bolt-aarch64-ubuntu-clang failure seems unrelated. This reverts commit 17ff9b3c67ab62f77b2dd5cba98fa0011f14d9a2.
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
//==- AnnexKDetection.cpp - Annex K availability detection -------*- C++ -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the implementation of utilities for detecting C11 Annex K
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// (Bounds-checking interfaces) availability.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/AnnexKDetection.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Lex/Preprocessor.h"
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namespace clang::analysis {
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[[nodiscard]] bool isAnnexKAvailable(Preprocessor *PP, const LangOptions &LO) {
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if (!LO.C11)
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return false;
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assert(PP && "No Preprocessor registered.");
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if (!PP->isMacroDefined("__STDC_LIB_EXT1__") ||
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!PP->isMacroDefined("__STDC_WANT_LIB_EXT1__"))
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return false;
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const auto *MI =
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PP->getMacroInfo(PP->getIdentifierInfo("__STDC_WANT_LIB_EXT1__"));
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if (!MI || MI->tokens_empty())
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return false;
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const Token &T = MI->tokens().back();
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if (!T.isLiteral() || !T.getLiteralData())
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return false;
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return StringRef(T.getLiteralData(), T.getLength()) == "1";
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}
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} // namespace clang::analysis
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