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| Original file line number | Diff line number | Diff line change |
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| // Test bolt instrumentation won't generate a binary with any segment that | ||
| // is writable and executable. Basically we want to put `.bolt.instr.counters` | ||
| // section into its own segment, separated from its surrounding RX sections. | ||
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| // REQUIRES: system-linux | ||
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| void foo() {} | ||
| void bar() { foo(); } | ||
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| // RUN: %clang %cflags -c %s -o %t.o | ||
| // RUN: ld.lld -q -o %t.so %t.o -shared --init=foo --fini=foo | ||
| // RUN: llvm-bolt --instrument %t.so -o %tt.so | ||
| // RUN: llvm-readelf -l %tt.so | FileCheck %s | ||
| // CHECK-NOT: RWE | ||
| // CHECK: {{[0-9]*}} .bolt.instr.counters {{$}} |
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91 changes: 91 additions & 0 deletions
91
clang-tools-extra/clang-tidy/bugprone/UnintendedCharOstreamOutputCheck.cpp
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| //===--- UnintendedCharOstreamOutputCheck.cpp - clang-tidy ----------------===// | ||
| // | ||
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
| // See https://llvm.org/LICENSE.txt for license information. | ||
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
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| #include "UnintendedCharOstreamOutputCheck.h" | ||
| #include "clang/AST/Type.h" | ||
| #include "clang/ASTMatchers/ASTMatchFinder.h" | ||
| #include "clang/ASTMatchers/ASTMatchers.h" | ||
| #include "clang/Basic/Diagnostic.h" | ||
| #include "clang/Tooling/FixIt.h" | ||
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| using namespace clang::ast_matchers; | ||
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| namespace clang::tidy::bugprone { | ||
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| namespace { | ||
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| // check if the type is unsigned char or signed char | ||
| AST_MATCHER(Type, isNumericChar) { | ||
| return Node.isSpecificBuiltinType(BuiltinType::SChar) || | ||
| Node.isSpecificBuiltinType(BuiltinType::UChar); | ||
| } | ||
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| // check if the type is char | ||
| AST_MATCHER(Type, isChar) { | ||
| return Node.isSpecificBuiltinType(BuiltinType::Char_S) || | ||
| Node.isSpecificBuiltinType(BuiltinType::Char_U); | ||
| } | ||
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| } // namespace | ||
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| UnintendedCharOstreamOutputCheck::UnintendedCharOstreamOutputCheck( | ||
| StringRef Name, ClangTidyContext *Context) | ||
| : ClangTidyCheck(Name, Context), CastTypeName(Options.get("CastTypeName")) { | ||
| } | ||
| void UnintendedCharOstreamOutputCheck::storeOptions( | ||
| ClangTidyOptions::OptionMap &Opts) { | ||
| if (CastTypeName.has_value()) | ||
| Options.store(Opts, "CastTypeName", CastTypeName.value()); | ||
| } | ||
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| void UnintendedCharOstreamOutputCheck::registerMatchers(MatchFinder *Finder) { | ||
| auto BasicOstream = | ||
| cxxRecordDecl(hasName("::std::basic_ostream"), | ||
| // only basic_ostream<char, Traits> has overload operator<< | ||
| // with char / unsigned char / signed char | ||
| classTemplateSpecializationDecl( | ||
| hasTemplateArgument(0, refersToType(isChar())))); | ||
| Finder->addMatcher( | ||
| cxxOperatorCallExpr( | ||
| hasOverloadedOperatorName("<<"), | ||
| hasLHS(hasType(hasUnqualifiedDesugaredType( | ||
| recordType(hasDeclaration(cxxRecordDecl( | ||
| anyOf(BasicOstream, isDerivedFrom(BasicOstream)))))))), | ||
| hasRHS(hasType(hasUnqualifiedDesugaredType(isNumericChar())))) | ||
| .bind("x"), | ||
| this); | ||
| } | ||
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| void UnintendedCharOstreamOutputCheck::check( | ||
| const MatchFinder::MatchResult &Result) { | ||
| const auto *Call = Result.Nodes.getNodeAs<CXXOperatorCallExpr>("x"); | ||
| const Expr *Value = Call->getArg(1); | ||
| const SourceRange SourceRange = Value->getSourceRange(); | ||
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| DiagnosticBuilder Builder = | ||
| diag(Call->getOperatorLoc(), | ||
| "%0 passed to 'operator<<' outputs as character instead of integer. " | ||
| "cast to 'unsigned int' to print numeric value or cast to 'char' to " | ||
| "print as character") | ||
| << Value->getType() << SourceRange; | ||
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| QualType T = Value->getType(); | ||
| const Type *UnqualifiedDesugaredType = T->getUnqualifiedDesugaredType(); | ||
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| llvm::StringRef CastType = CastTypeName.value_or( | ||
| UnqualifiedDesugaredType->isSpecificBuiltinType(BuiltinType::SChar) | ||
| ? "int" | ||
| : "unsigned int"); | ||
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| Builder << FixItHint::CreateReplacement( | ||
| SourceRange, ("static_cast<" + CastType + ">(" + | ||
| tooling::fixit::getText(*Value, *Result.Context) + ")") | ||
| .str()); | ||
| } | ||
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| } // namespace clang::tidy::bugprone |
38 changes: 38 additions & 0 deletions
38
clang-tools-extra/clang-tidy/bugprone/UnintendedCharOstreamOutputCheck.h
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| Original file line number | Diff line number | Diff line change |
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| //===--- UnintendedCharOstreamOutputCheck.h - clang-tidy --------*- C++ -*-===// | ||
| // | ||
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
| // See https://llvm.org/LICENSE.txt for license information. | ||
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
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| #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNINTENDEDCHAROSTREAMOUTPUTCHECK_H | ||
| #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNINTENDEDCHAROSTREAMOUTPUTCHECK_H | ||
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| #include "../ClangTidyCheck.h" | ||
| #include <optional> | ||
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| namespace clang::tidy::bugprone { | ||
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| /// Finds unintended character output from `unsigned char` and `signed char` to | ||
| /// an ostream. | ||
| /// | ||
| /// For the user-facing documentation see: | ||
| /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone/unintended-char-ostream-output.html | ||
| class UnintendedCharOstreamOutputCheck : public ClangTidyCheck { | ||
| public: | ||
| UnintendedCharOstreamOutputCheck(StringRef Name, ClangTidyContext *Context); | ||
| void storeOptions(ClangTidyOptions::OptionMap &Opts) override; | ||
| void registerMatchers(ast_matchers::MatchFinder *Finder) override; | ||
| void check(const ast_matchers::MatchFinder::MatchResult &Result) override; | ||
| bool isLanguageVersionSupported(const LangOptions &LangOpts) const override { | ||
| return LangOpts.CPlusPlus; | ||
| } | ||
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| private: | ||
| const std::optional<StringRef> CastTypeName; | ||
| }; | ||
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| } // namespace clang::tidy::bugprone | ||
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| #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNINTENDEDCHAROSTREAMOUTPUTCHECK_H |
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