jroelofs updated this revision to Diff 44650.
jroelofs added a comment.
Added docs.
http://reviews.llvm.org/D15528
Files:
clang-tidy/ClangTidy.cpp
clang-tidy/ClangTidy.h
clang-tidy/ClangTidyDiagnosticConsumer.cpp
clang-tidy/ClangTidyDiagnosticConsumer.h
clang-tidy/ClangTidyOptions.cpp
clang-tidy/ClangTidyOptions.h
clang-tidy/tool/ClangTidyMain.cpp
docs/clang-tidy/index.rst
test/clang-tidy/werrors-plural.cpp
Index: test/clang-tidy/werrors-plural.cpp
===================================================================
--- test/clang-tidy/werrors-plural.cpp
+++ test/clang-tidy/werrors-plural.cpp
@@ -0,0 +1,15 @@
+// RUN: clang-tidy %s -checks='-*,llvm-namespace-comment' -- 2>&1 | FileCheck %s --check-prefix=CHECK-WARN
+// RUN: not clang-tidy %s -checks='-*,llvm-namespace-comment' -warnings-as-errors='llvm-namespace-comment' -- 2>&1 | FileCheck %s --check-prefix=CHECK-WERR
+
+namespace j {
+}
+// CHECK-WARN: warning: namespace 'j' not terminated with a closing comment [llvm-namespace-comment]
+// CHECK-WERR: error: namespace 'j' not terminated with a closing comment [llvm-namespace-comment,-warnings-as-errors]
+
+namespace k {
+}
+// CHECK-WARN: warning: namespace 'k' not terminated with a closing comment [llvm-namespace-comment]
+// CHECK-WERR: error: namespace 'k' not terminated with a closing comment [llvm-namespace-comment,-warnings-as-errors]
+
+// CHECK-WARN-NOT: treated as
+// CHECK-WERR: 2 warnings treated as errors
Index: docs/clang-tidy/index.rst
===================================================================
--- docs/clang-tidy/index.rst
+++ docs/clang-tidy/index.rst
@@ -68,7 +68,9 @@
diagnostics are displayed by clang-tidy and can be filtered out using
``-checks=`` option. However, the ``-checks=`` option does not affect
compilation arguments, so it can not turn on Clang warnings which are not
-already turned on in build configuration.
+already turned on in build configuration. The ``-warnings-as-errors=`` option
+upgrades any warnings emitted under the ``-checks=`` flag to errors (but it
+does not enable any checks itself).
Clang diagnostics have check names starting with ``clang-diagnostic-``.
Diagnostics which have a corresponding warning option, are named
@@ -150,6 +152,7 @@
-checks=* to list all available checks.
-p=<string> - Build path
-system-headers - Display the errors from system headers.
+ -warnings-as-errors=<string> - Upgrades warnings to errors. Same format as '-checks'.
-p <build-path> is used to read a compile command database.
Index: clang-tidy/tool/ClangTidyMain.cpp
===================================================================
--- clang-tidy/tool/ClangTidyMain.cpp
+++ clang-tidy/tool/ClangTidyMain.cpp
@@ -64,6 +64,11 @@
cl::init(""), cl::cat(ClangTidyCategory));
static cl::opt<std::string>
+WarningsAsErrors("warnings-as-errors", cl::desc("Upgrades warnings to errors. "
+ "Same format as '-checks'."),
+ cl::init(""), cl::cat(ClangTidyCategory));
+
+static cl::opt<std::string>
HeaderFilter("header-filter",
cl::desc("Regular expression matching the names of the\n"
"headers to output diagnostics from. Diagnostics\n"
@@ -227,6 +232,7 @@
ClangTidyOptions DefaultOptions;
DefaultOptions.Checks = DefaultChecks;
+ DefaultOptions.WarningsAsErrors = "";
DefaultOptions.HeaderFilterRegex = HeaderFilter;
DefaultOptions.SystemHeaders = SystemHeaders;
DefaultOptions.AnalyzeTemporaryDtors = AnalyzeTemporaryDtors;
@@ -238,6 +244,8 @@
ClangTidyOptions OverrideOptions;
if (Checks.getNumOccurrences() > 0)
OverrideOptions.Checks = Checks;
+ if (WarningsAsErrors.getNumOccurrences() > 0)
+ OverrideOptions.WarningsAsErrors = WarningsAsErrors;
if (HeaderFilter.getNumOccurrences() > 0)
OverrideOptions.HeaderFilterRegex = HeaderFilter;
if (SystemHeaders.getNumOccurrences() > 0)
@@ -322,8 +330,10 @@
const bool DisableFixes = Fix && FoundErrors && !FixErrors;
+ unsigned WErrorCount = 0;
+
// -fix-errors implies -fix.
- handleErrors(Errors, (FixErrors || Fix) && !DisableFixes);
+ handleErrors(Errors, (FixErrors || Fix) && !DisableFixes, WErrorCount);
if (!ExportFixes.empty() && !Errors.empty()) {
std::error_code EC;
@@ -344,6 +354,13 @@
if (EnableCheckProfile)
printProfileData(Profile, llvm::errs());
+ if (WErrorCount) {
+ StringRef Plural = WErrorCount == 1 ? "" : "s";
+ llvm::errs() << WErrorCount << " warning" << Plural
+ << " treated as error" << Plural << "\n";
+ return WErrorCount;
+ }
+
return 0;
}
Index: clang-tidy/ClangTidyOptions.h
===================================================================
--- clang-tidy/ClangTidyOptions.h
+++ clang-tidy/ClangTidyOptions.h
@@ -62,6 +62,9 @@
/// \brief Checks filter.
llvm::Optional<std::string> Checks;
+ /// \brief WarningsAsErrors filter.
+ llvm::Optional<std::string> WarningsAsErrors;
+
/// \brief Output warnings from headers matching this filter. Warnings from
/// main files will always be displayed.
llvm::Optional<std::string> HeaderFilterRegex;
Index: clang-tidy/ClangTidyOptions.cpp
===================================================================
--- clang-tidy/ClangTidyOptions.cpp
+++ clang-tidy/ClangTidyOptions.cpp
@@ -85,6 +85,7 @@
MappingNormalization<NOptionMap, ClangTidyOptions::OptionMap> NOpts(
IO, Options.CheckOptions);
IO.mapOptional("Checks", Options.Checks);
+ IO.mapOptional("WarningsAsErrors", Options.WarningsAsErrors);
IO.mapOptional("HeaderFilterRegex", Options.HeaderFilterRegex);
IO.mapOptional("AnalyzeTemporaryDtors", Options.AnalyzeTemporaryDtors);
IO.mapOptional("User", Options.User);
@@ -103,6 +104,7 @@
ClangTidyOptions ClangTidyOptions::getDefaults() {
ClangTidyOptions Options;
Options.Checks = "";
+ Options.WarningsAsErrors = "";
Options.HeaderFilterRegex = "";
Options.SystemHeaders = false;
Options.AnalyzeTemporaryDtors = false;
@@ -123,6 +125,10 @@
Result.Checks =
(Result.Checks && !Result.Checks->empty() ? *Result.Checks + "," : "") +
*Other.Checks;
+ if (Other.WarningsAsErrors)
+ Result.WarningsAsErrors =
+ (Result.WarningsAsErrors && !Result.WarningsAsErrors->empty() ? *Result.WarningsAsErrors + "," : "") +
+ *Other.WarningsAsErrors;
if (Other.HeaderFilterRegex)
Result.HeaderFilterRegex = Other.HeaderFilterRegex;
Index: clang-tidy/ClangTidyDiagnosticConsumer.h
===================================================================
--- clang-tidy/ClangTidyDiagnosticConsumer.h
+++ clang-tidy/ClangTidyDiagnosticConsumer.h
@@ -57,7 +57,7 @@
Error = DiagnosticsEngine::Error
};
- ClangTidyError(StringRef CheckName, Level DiagLevel);
+ ClangTidyError(StringRef CheckName, Level DiagLevel, bool IsWarningAsError);
std::string CheckName;
ClangTidyMessage Message;
@@ -65,6 +65,7 @@
SmallVector<ClangTidyMessage, 1> Notes;
Level DiagLevel;
+ bool IsWarningAsError;
};
/// \brief Read-only set of strings represented as a list of positive and
@@ -164,6 +165,10 @@
/// \brief Returns true if the check name is enabled for the \c CurrentFile.
bool isCheckEnabled(StringRef CheckName) const;
+ /// \brief Returns check filter for the \c CurrentFile which
+ /// selects checks for upgrade to error.
+ GlobList &getWarningAsErrorFilter();
+
/// \brief Returns global options.
const ClangTidyGlobalOptions &getGlobalOptions() const;
@@ -211,6 +216,7 @@
std::string CurrentFile;
ClangTidyOptions CurrentOptions;
std::unique_ptr<GlobList> CheckFilter;
+ std::unique_ptr<GlobList> WarningAsErrorFilter;
LangOptions LangOpts;
Index: clang-tidy/ClangTidyDiagnosticConsumer.cpp
===================================================================
--- clang-tidy/ClangTidyDiagnosticConsumer.cpp
+++ clang-tidy/ClangTidyDiagnosticConsumer.cpp
@@ -115,8 +115,9 @@
}
ClangTidyError::ClangTidyError(StringRef CheckName,
- ClangTidyError::Level DiagLevel)
- : CheckName(CheckName), DiagLevel(DiagLevel) {}
+ ClangTidyError::Level DiagLevel,
+ bool IsWarningAsError)
+ : CheckName(CheckName), DiagLevel(DiagLevel), IsWarningAsError(IsWarningAsError) {}
// Returns true if GlobList starts with the negative indicator ('-'), removes it
// from the GlobList.
@@ -204,6 +205,7 @@
CurrentFile = File;
CurrentOptions = getOptionsForFile(CurrentFile);
CheckFilter.reset(new GlobList(*getOptions().Checks));
+ WarningAsErrorFilter.reset(new GlobList(*getOptions().WarningsAsErrors));
}
void ClangTidyContext::setASTContext(ASTContext *Context) {
@@ -237,6 +239,11 @@
return CheckFilter->contains(CheckName);
}
+GlobList &ClangTidyContext::getWarningAsErrorFilter() {
+ assert(WarningAsErrorFilter != nullptr);
+ return *WarningAsErrorFilter;
+}
+
/// \brief Store a \c ClangTidyError.
void ClangTidyContext::storeError(const ClangTidyError &Error) {
Errors.push_back(Error);
@@ -324,7 +331,9 @@
LastErrorRelatesToUserCode = true;
LastErrorPassesLineFilter = true;
}
- Errors.push_back(ClangTidyError(CheckName, Level));
+ bool IsWarningAsError = DiagLevel == DiagnosticsEngine::Warning &&
+ Context.getWarningAsErrorFilter().contains(CheckName);
+ Errors.push_back(ClangTidyError(CheckName, Level, IsWarningAsError));
}
// FIXME: Provide correct LangOptions for each file.
Index: clang-tidy/ClangTidy.h
===================================================================
--- clang-tidy/ClangTidy.h
+++ clang-tidy/ClangTidy.h
@@ -214,7 +214,8 @@
//
/// \brief Displays the found \p Errors to the users. If \p Fix is true, \p
/// Errors containing fixes are automatically applied.
-void handleErrors(const std::vector<ClangTidyError> &Errors, bool Fix);
+void handleErrors(const std::vector<ClangTidyError> &Errors, bool Fix,
+ unsigned &WarningsAsErrorsCount);
/// \brief Serializes replacements into YAML and writes them to the specified
/// output stream.
Index: clang-tidy/ClangTidy.cpp
===================================================================
--- clang-tidy/ClangTidy.cpp
+++ clang-tidy/ClangTidy.cpp
@@ -101,7 +101,7 @@
Diags(IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), &*DiagOpts,
DiagPrinter),
SourceMgr(Diags, Files), Rewrite(SourceMgr, LangOpts),
- ApplyFixes(ApplyFixes), TotalFixes(0), AppliedFixes(0) {
+ ApplyFixes(ApplyFixes), TotalFixes(0), AppliedFixes(0), WarningsAsErrors(0) {
DiagOpts->ShowColors = llvm::sys::Process::StandardOutHasColors();
DiagPrinter->BeginSourceFile(LangOpts);
}
@@ -114,8 +114,14 @@
SmallVector<std::pair<SourceLocation, bool>, 4> FixLocations;
{
auto Level = static_cast<DiagnosticsEngine::Level>(Error.DiagLevel);
+ std::string Name = Error.CheckName;
+ if (Error.IsWarningAsError) {
+ Name += ",-warnings-as-errors";
+ Level = DiagnosticsEngine::Error;
+ WarningsAsErrors++;
+ }
auto Diag = Diags.Report(Loc, Diags.getCustomDiagID(Level, "%0 [%1]"))
- << Message.Message << Error.CheckName;
+ << Message.Message << Name;
for (const tooling::Replacement &Fix : Error.Fix) {
SourceLocation FixLoc = getLocation(Fix.getFilePath(), Fix.getOffset());
SourceLocation FixEndLoc = FixLoc.getLocWithOffset(Fix.getLength());
@@ -147,6 +153,8 @@
}
}
+ unsigned WarningsAsErrorsCount() const { return WarningsAsErrors; }
+
private:
SourceLocation getLocation(StringRef FilePath, unsigned Offset) {
if (FilePath.empty())
@@ -174,6 +182,7 @@
bool ApplyFixes;
unsigned TotalFixes;
unsigned AppliedFixes;
+ unsigned WarningsAsErrors;
};
class ClangTidyASTConsumer : public MultiplexConsumer {
@@ -421,11 +430,13 @@
return Context.getStats();
}
-void handleErrors(const std::vector<ClangTidyError> &Errors, bool Fix) {
+void handleErrors(const std::vector<ClangTidyError> &Errors, bool Fix,
+ unsigned &WarningsAsErrorsCount) {
ErrorReporter Reporter(Fix);
for (const ClangTidyError &Error : Errors)
Reporter.reportDiagnostic(Error);
Reporter.Finish();
+ WarningsAsErrorsCount += Reporter.WarningsAsErrorsCount();
}
void exportReplacements(const std::vector<ClangTidyError> &Errors,
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
