clang-tools
10.0.0
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Checks Linux kernel code to see if it uses the results from the functions in linux/err.h. More...
#include <MustCheckErrsCheck.h>
Public Member Functions | |
MustCheckErrsCheck (StringRef Name, ClangTidyContext *Context) | |
void | registerMatchers (ast_matchers::MatchFinder *Finder) override |
Override this to register AST matchers with Finder . More... | |
void | check (const ast_matchers::MatchFinder::MatchResult &Result) override |
ClangTidyChecks that register ASTMatchers should do the actual work in here. More... | |
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ClangTidyCheck (StringRef CheckName, ClangTidyContext *Context) | |
Initializes the check with CheckName and Context . More... | |
virtual void | registerPPCallbacks (const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) |
Override this to register PPCallbacks in the preprocessor. More... | |
DiagnosticBuilder | diag (SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning) |
Add a diagnostic with the check's name. More... | |
virtual void | storeOptions (ClangTidyOptions::OptionMap &Options) |
Should store all options supported by this check with their current values or default values for options that haven't been overridden. More... | |
Additional Inherited Members | |
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StringRef | getCurrentMainFile () const |
Returns the main file name of the current translation unit. More... | |
const LangOptions & | getLangOpts () const |
Returns the language options from the context. More... | |
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OptionsView | Options |
Checks Linux kernel code to see if it uses the results from the functions in linux/err.h.
Also checks to see if code uses the results from functions that directly return a value from one of these error functions.
This is important in the Linux kernel because ERR_PTR, PTR_ERR, IS_ERR, IS_ERR_OR_NULL, ERR_CAST, and PTR_ERR_OR_ZERO return values must be checked, since positive pointers and negative error codes are being used in the same context. These functions are marked with attribute((warn_unused_result)), but some kernel versions do not have this warning enabled for clang.
For the user-facing documentation see: http://clang.llvm.org/extra/clang-tidy/checks/linuxkernel-must-use-errs.html
Definition at line 31 of file MustCheckErrsCheck.h.
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inline |
Definition at line 33 of file MustCheckErrsCheck.h.
References registerMatchers().
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overridevirtual |
ClangTidyChecks
that register ASTMatchers should do the actual work in here.
Reimplemented from clang::tidy::ClangTidyCheck.
Definition at line 35 of file MustCheckErrsCheck.cpp.
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overridevirtual |
Override this to register AST matchers with Finder
.
This should be used by clang-tidy checks that analyze code properties that dependent on AST knowledge.
You can register as many matchers as necessary with Finder
. Usually, "this" will be used as callback, but you can also specify other callback classes. Thereby, different matchers can trigger different callbacks.
If you need to merge information between the different matchers, you can store these as members of the derived class. However, note that all matches occur in the order of the AST traversal.
Reimplemented from clang::tidy::ClangTidyCheck.
Definition at line 19 of file MustCheckErrsCheck.cpp.
Referenced by MustCheckErrsCheck().