1 //===--- DiagnosticIDs.cpp - Diagnostic IDs Handling ----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Diagnostic IDs-related interfaces.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Basic/DiagnosticIDs.h"
15 #include "clang/Basic/AllDiagnostics.h"
16 #include "clang/Basic/DiagnosticCategories.h"
17 #include "clang/Basic/SourceManager.h"
18 #include "llvm/ADT/STLExtras.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/Support/ErrorHandling.h"
22 using namespace clang;
24 //===----------------------------------------------------------------------===//
25 // Builtin Diagnostic information
26 //===----------------------------------------------------------------------===//
30 // Diagnostic classes.
35 CLASS_EXTENSION = 0x04,
39 struct StaticDiagInfoRec {
41 unsigned DefaultSeverity : 3;
44 unsigned WarnNoWerror : 1;
45 unsigned WarnShowInSystemHeader : 1;
46 unsigned Category : 5;
48 uint16_t OptionGroupIndex;
50 uint16_t DescriptionLen;
51 const char *DescriptionStr;
53 unsigned getOptionGroupIndex() const {
54 return OptionGroupIndex;
57 StringRef getDescription() const {
58 return StringRef(DescriptionStr, DescriptionLen);
61 diag::Flavor getFlavor() const {
62 return Class == CLASS_REMARK ? diag::Flavor::Remark
63 : diag::Flavor::WarningOrError;
66 bool operator<(const StaticDiagInfoRec &RHS) const {
67 return DiagID < RHS.DiagID;
71 } // namespace anonymous
73 static const StaticDiagInfoRec StaticDiagInfo[] = {
74 #define DIAG(ENUM, CLASS, DEFAULT_SEVERITY, DESC, GROUP, SFINAE, NOWERROR, \
75 SHOWINSYSHEADER, CATEGORY) \
77 diag::ENUM, DEFAULT_SEVERITY, CLASS, DiagnosticIDs::SFINAE, NOWERROR, \
78 SHOWINSYSHEADER, CATEGORY, GROUP, STR_SIZE(DESC, uint16_t), DESC \
81 #include "clang/Basic/DiagnosticCommonKinds.inc"
82 #include "clang/Basic/DiagnosticDriverKinds.inc"
83 #include "clang/Basic/DiagnosticFrontendKinds.inc"
84 #include "clang/Basic/DiagnosticSerializationKinds.inc"
85 #include "clang/Basic/DiagnosticLexKinds.inc"
86 #include "clang/Basic/DiagnosticParseKinds.inc"
87 #include "clang/Basic/DiagnosticASTKinds.inc"
88 #include "clang/Basic/DiagnosticCommentKinds.inc"
89 #include "clang/Basic/DiagnosticSemaKinds.inc"
90 #include "clang/Basic/DiagnosticAnalysisKinds.inc"
94 static const unsigned StaticDiagInfoSize = llvm::array_lengthof(StaticDiagInfo);
96 /// GetDiagInfo - Return the StaticDiagInfoRec entry for the specified DiagID,
97 /// or null if the ID is invalid.
98 static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
99 // If assertions are enabled, verify that the StaticDiagInfo array is sorted.
101 static bool IsFirst = true; // So the check is only performed on first call.
103 assert(std::is_sorted(std::begin(StaticDiagInfo),
104 std::end(StaticDiagInfo)) &&
105 "Diag ID conflict, the enums at the start of clang::diag (in "
106 "DiagnosticIDs.h) probably need to be increased");
111 // Out of bounds diag. Can't be in the table.
112 using namespace diag;
113 if (DiagID >= DIAG_UPPER_LIMIT || DiagID <= DIAG_START_COMMON)
116 // Compute the index of the requested diagnostic in the static table.
117 // 1. Add the number of diagnostics in each category preceding the
118 // diagnostic and of the category the diagnostic is in. This gives us
119 // the offset of the category in the table.
120 // 2. Subtract the number of IDs in each category from our ID. This gives us
121 // the offset of the diagnostic in the category.
122 // This is cheaper than a binary search on the table as it doesn't touch
125 unsigned ID = DiagID - DIAG_START_COMMON - 1;
126 #define CATEGORY(NAME, PREV) \
127 if (DiagID > DIAG_START_##NAME) { \
128 Offset += NUM_BUILTIN_##PREV##_DIAGNOSTICS - DIAG_START_##PREV - 1; \
129 ID -= DIAG_START_##NAME - DIAG_START_##PREV; \
131 CATEGORY(DRIVER, COMMON)
132 CATEGORY(FRONTEND, DRIVER)
133 CATEGORY(SERIALIZATION, FRONTEND)
134 CATEGORY(LEX, SERIALIZATION)
137 CATEGORY(COMMENT, AST)
138 CATEGORY(SEMA, COMMENT)
139 CATEGORY(ANALYSIS, SEMA)
142 // Avoid out of bounds reads.
143 if (ID + Offset >= StaticDiagInfoSize)
146 assert(ID < StaticDiagInfoSize && Offset < StaticDiagInfoSize);
148 const StaticDiagInfoRec *Found = &StaticDiagInfo[ID + Offset];
149 // If the diag id doesn't match we found a different diag, abort. This can
150 // happen when this function is called with an ID that points into a hole in
152 if (Found->DiagID != DiagID)
157 static DiagnosticMapping GetDefaultDiagMapping(unsigned DiagID) {
158 DiagnosticMapping Info = DiagnosticMapping::Make(
159 diag::Severity::Fatal, /*IsUser=*/false, /*IsPragma=*/false);
161 if (const StaticDiagInfoRec *StaticInfo = GetDiagInfo(DiagID)) {
162 Info.setSeverity((diag::Severity)StaticInfo->DefaultSeverity);
164 if (StaticInfo->WarnNoWerror) {
165 assert(Info.getSeverity() == diag::Severity::Warning &&
166 "Unexpected mapping with no-Werror bit!");
167 Info.setNoWarningAsError(true);
174 /// getCategoryNumberForDiag - Return the category number that a specified
175 /// DiagID belongs to, or 0 if no category.
176 unsigned DiagnosticIDs::getCategoryNumberForDiag(unsigned DiagID) {
177 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
178 return Info->Category;
183 // The diagnostic category names.
184 struct StaticDiagCategoryRec {
188 StringRef getName() const {
189 return StringRef(NameStr, NameLen);
194 // Unfortunately, the split between DiagnosticIDs and Diagnostic is not
195 // particularly clean, but for now we just implement this method here so we can
196 // access GetDefaultDiagMapping.
198 DiagnosticsEngine::DiagState::getOrAddMapping(diag::kind Diag) {
199 std::pair<iterator, bool> Result =
200 DiagMap.insert(std::make_pair(Diag, DiagnosticMapping()));
202 // Initialize the entry if we added it.
204 Result.first->second = GetDefaultDiagMapping(Diag);
206 return Result.first->second;
209 static const StaticDiagCategoryRec CategoryNameTable[] = {
210 #define GET_CATEGORY_TABLE
211 #define CATEGORY(X, ENUM) { X, STR_SIZE(X, uint8_t) },
212 #include "clang/Basic/DiagnosticGroups.inc"
213 #undef GET_CATEGORY_TABLE
217 /// getNumberOfCategories - Return the number of categories
218 unsigned DiagnosticIDs::getNumberOfCategories() {
219 return llvm::array_lengthof(CategoryNameTable) - 1;
222 /// getCategoryNameFromID - Given a category ID, return the name of the
223 /// category, an empty string if CategoryID is zero, or null if CategoryID is
225 StringRef DiagnosticIDs::getCategoryNameFromID(unsigned CategoryID) {
226 if (CategoryID >= getNumberOfCategories())
228 return CategoryNameTable[CategoryID].getName();
233 DiagnosticIDs::SFINAEResponse
234 DiagnosticIDs::getDiagnosticSFINAEResponse(unsigned DiagID) {
235 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
236 return static_cast<DiagnosticIDs::SFINAEResponse>(Info->SFINAE);
237 return SFINAE_Report;
240 /// getBuiltinDiagClass - Return the class field of the diagnostic.
242 static unsigned getBuiltinDiagClass(unsigned DiagID) {
243 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
248 //===----------------------------------------------------------------------===//
249 // Custom Diagnostic information
250 //===----------------------------------------------------------------------===//
254 class CustomDiagInfo {
255 typedef std::pair<DiagnosticIDs::Level, std::string> DiagDesc;
256 std::vector<DiagDesc> DiagInfo;
257 std::map<DiagDesc, unsigned> DiagIDs;
260 /// getDescription - Return the description of the specified custom
262 StringRef getDescription(unsigned DiagID) const {
263 assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
264 "Invalid diagnostic ID");
265 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second;
268 /// getLevel - Return the level of the specified custom diagnostic.
269 DiagnosticIDs::Level getLevel(unsigned DiagID) const {
270 assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
271 "Invalid diagnostic ID");
272 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first;
275 unsigned getOrCreateDiagID(DiagnosticIDs::Level L, StringRef Message,
276 DiagnosticIDs &Diags) {
277 DiagDesc D(L, Message);
278 // Check to see if it already exists.
279 std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D);
280 if (I != DiagIDs.end() && I->first == D)
283 // If not, assign a new ID.
284 unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT;
285 DiagIDs.insert(std::make_pair(D, ID));
286 DiagInfo.push_back(D);
291 } // end diag namespace
292 } // end clang namespace
295 //===----------------------------------------------------------------------===//
296 // Common Diagnostic implementation
297 //===----------------------------------------------------------------------===//
299 DiagnosticIDs::DiagnosticIDs() { CustomDiagInfo = nullptr; }
301 DiagnosticIDs::~DiagnosticIDs() {
302 delete CustomDiagInfo;
305 /// getCustomDiagID - Return an ID for a diagnostic with the specified message
306 /// and level. If this is the first request for this diagnostic, it is
307 /// registered and created, otherwise the existing ID is returned.
309 /// \param FormatString A fixed diagnostic format string that will be hashed and
310 /// mapped to a unique DiagID.
311 unsigned DiagnosticIDs::getCustomDiagID(Level L, StringRef FormatString) {
313 CustomDiagInfo = new diag::CustomDiagInfo();
314 return CustomDiagInfo->getOrCreateDiagID(L, FormatString, *this);
318 /// isBuiltinWarningOrExtension - Return true if the unmapped diagnostic
319 /// level of the specified diagnostic ID is a Warning or Extension.
320 /// This only works on builtin diagnostics, not custom ones, and is not legal to
322 bool DiagnosticIDs::isBuiltinWarningOrExtension(unsigned DiagID) {
323 return DiagID < diag::DIAG_UPPER_LIMIT &&
324 getBuiltinDiagClass(DiagID) != CLASS_ERROR;
327 /// \brief Determine whether the given built-in diagnostic ID is a
329 bool DiagnosticIDs::isBuiltinNote(unsigned DiagID) {
330 return DiagID < diag::DIAG_UPPER_LIMIT &&
331 getBuiltinDiagClass(DiagID) == CLASS_NOTE;
334 /// isBuiltinExtensionDiag - Determine whether the given built-in diagnostic
335 /// ID is for an extension of some sort. This also returns EnabledByDefault,
336 /// which is set to indicate whether the diagnostic is ignored by default (in
337 /// which case -pedantic enables it) or treated as a warning/error by default.
339 bool DiagnosticIDs::isBuiltinExtensionDiag(unsigned DiagID,
340 bool &EnabledByDefault) {
341 if (DiagID >= diag::DIAG_UPPER_LIMIT ||
342 getBuiltinDiagClass(DiagID) != CLASS_EXTENSION)
346 GetDefaultDiagMapping(DiagID).getSeverity() != diag::Severity::Ignored;
350 bool DiagnosticIDs::isDefaultMappingAsError(unsigned DiagID) {
351 if (DiagID >= diag::DIAG_UPPER_LIMIT)
354 return GetDefaultDiagMapping(DiagID).getSeverity() >= diag::Severity::Error;
357 /// getDescription - Given a diagnostic ID, return a description of the
359 StringRef DiagnosticIDs::getDescription(unsigned DiagID) const {
360 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
361 return Info->getDescription();
362 assert(CustomDiagInfo && "Invalid CustomDiagInfo");
363 return CustomDiagInfo->getDescription(DiagID);
366 static DiagnosticIDs::Level toLevel(diag::Severity SV) {
368 case diag::Severity::Ignored:
369 return DiagnosticIDs::Ignored;
370 case diag::Severity::Remark:
371 return DiagnosticIDs::Remark;
372 case diag::Severity::Warning:
373 return DiagnosticIDs::Warning;
374 case diag::Severity::Error:
375 return DiagnosticIDs::Error;
376 case diag::Severity::Fatal:
377 return DiagnosticIDs::Fatal;
379 llvm_unreachable("unexpected severity");
382 /// getDiagnosticLevel - Based on the way the client configured the
383 /// DiagnosticsEngine object, classify the specified diagnostic ID into a Level,
384 /// by consumable the DiagnosticClient.
386 DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
387 const DiagnosticsEngine &Diag) const {
388 // Handle custom diagnostics, which cannot be mapped.
389 if (DiagID >= diag::DIAG_UPPER_LIMIT) {
390 assert(CustomDiagInfo && "Invalid CustomDiagInfo");
391 return CustomDiagInfo->getLevel(DiagID);
394 unsigned DiagClass = getBuiltinDiagClass(DiagID);
395 if (DiagClass == CLASS_NOTE) return DiagnosticIDs::Note;
396 return toLevel(getDiagnosticSeverity(DiagID, Loc, Diag));
399 /// \brief Based on the way the client configured the Diagnostic
400 /// object, classify the specified diagnostic ID into a Level, consumable by
401 /// the DiagnosticClient.
403 /// \param Loc The source location we are interested in finding out the
404 /// diagnostic state. Can be null in order to query the latest state.
406 DiagnosticIDs::getDiagnosticSeverity(unsigned DiagID, SourceLocation Loc,
407 const DiagnosticsEngine &Diag) const {
408 assert(getBuiltinDiagClass(DiagID) != CLASS_NOTE);
410 // Specific non-error diagnostics may be mapped to various levels from ignored
411 // to error. Errors can only be mapped to fatal.
412 diag::Severity Result = diag::Severity::Fatal;
414 // Get the mapping information, or compute it lazily.
415 DiagnosticsEngine::DiagState *State = Diag.GetDiagStateForLoc(Loc);
416 DiagnosticMapping &Mapping = State->getOrAddMapping((diag::kind)DiagID);
418 // TODO: Can a null severity really get here?
419 if (Mapping.getSeverity() != diag::Severity())
420 Result = Mapping.getSeverity();
422 // Upgrade ignored diagnostics if -Weverything is enabled.
423 if (State->EnableAllWarnings && Result == diag::Severity::Ignored &&
424 !Mapping.isUser() && getBuiltinDiagClass(DiagID) != CLASS_REMARK)
425 Result = diag::Severity::Warning;
427 // Ignore -pedantic diagnostics inside __extension__ blocks.
428 // (The diagnostics controlled by -pedantic are the extension diagnostics
429 // that are not enabled by default.)
430 bool EnabledByDefault = false;
431 bool IsExtensionDiag = isBuiltinExtensionDiag(DiagID, EnabledByDefault);
432 if (Diag.AllExtensionsSilenced && IsExtensionDiag && !EnabledByDefault)
433 return diag::Severity::Ignored;
435 // For extension diagnostics that haven't been explicitly mapped, check if we
436 // should upgrade the diagnostic.
437 if (IsExtensionDiag && !Mapping.isUser())
438 Result = std::max(Result, State->ExtBehavior);
440 // At this point, ignored errors can no longer be upgraded.
441 if (Result == diag::Severity::Ignored)
444 // Honor -w, which is lower in priority than pedantic-errors, but higher than
446 // FIXME: Under GCC, this also suppresses warnings that have been mapped to
447 // errors by -W flags and #pragma diagnostic.
448 if (Result == diag::Severity::Warning && State->IgnoreAllWarnings)
449 return diag::Severity::Ignored;
451 // If -Werror is enabled, map warnings to errors unless explicitly disabled.
452 if (Result == diag::Severity::Warning) {
453 if (State->WarningsAsErrors && !Mapping.hasNoWarningAsError())
454 Result = diag::Severity::Error;
457 // If -Wfatal-errors is enabled, map errors to fatal unless explicity
459 if (Result == diag::Severity::Error) {
460 if (State->ErrorsAsFatal && !Mapping.hasNoErrorAsFatal())
461 Result = diag::Severity::Fatal;
464 // Custom diagnostics always are emitted in system headers.
465 bool ShowInSystemHeader =
466 !GetDiagInfo(DiagID) || GetDiagInfo(DiagID)->WarnShowInSystemHeader;
468 // If we are in a system header, we ignore it. We look at the diagnostic class
469 // because we also want to ignore extensions and warnings in -Werror and
470 // -pedantic-errors modes, which *map* warnings/extensions to errors.
471 if (State->SuppressSystemWarnings && !ShowInSystemHeader && Loc.isValid() &&
472 Diag.getSourceManager().isInSystemHeader(
473 Diag.getSourceManager().getExpansionLoc(Loc)))
474 return diag::Severity::Ignored;
479 #define GET_DIAG_ARRAYS
480 #include "clang/Basic/DiagnosticGroups.inc"
481 #undef GET_DIAG_ARRAYS
484 struct WarningOption {
489 // String is stored with a pascal-style length byte.
490 StringRef getName() const {
491 return StringRef(DiagGroupNames + NameOffset + 1,
492 DiagGroupNames[NameOffset]);
497 // Second the table of options, sorted by name for fast binary lookup.
498 static const WarningOption OptionTable[] = {
499 #define GET_DIAG_TABLE
500 #include "clang/Basic/DiagnosticGroups.inc"
501 #undef GET_DIAG_TABLE
504 /// getWarningOptionForDiag - Return the lowest-level warning option that
505 /// enables the specified diagnostic. If there is no -Wfoo flag that controls
506 /// the diagnostic, this returns null.
507 StringRef DiagnosticIDs::getWarningOptionForDiag(unsigned DiagID) {
508 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
509 return OptionTable[Info->getOptionGroupIndex()].getName();
513 std::vector<std::string> DiagnosticIDs::getDiagnosticFlags() {
514 std::vector<std::string> Res;
515 for (size_t I = 1; DiagGroupNames[I] != '\0';) {
516 std::string Diag(DiagGroupNames + I + 1, DiagGroupNames[I]);
517 I += DiagGroupNames[I] + 1;
518 Res.push_back("-W" + Diag);
519 Res.push_back("-Wno-" + Diag);
525 /// Return \c true if any diagnostics were found in this group, even if they
526 /// were filtered out due to having the wrong flavor.
527 static bool getDiagnosticsInGroup(diag::Flavor Flavor,
528 const WarningOption *Group,
529 SmallVectorImpl<diag::kind> &Diags) {
530 // An empty group is considered to be a warning group: we have empty groups
531 // for GCC compatibility, and GCC does not have remarks.
532 if (!Group->Members && !Group->SubGroups)
533 return Flavor == diag::Flavor::Remark;
535 bool NotFound = true;
537 // Add the members of the option diagnostic set.
538 const int16_t *Member = DiagArrays + Group->Members;
539 for (; *Member != -1; ++Member) {
540 if (GetDiagInfo(*Member)->getFlavor() == Flavor) {
542 Diags.push_back(*Member);
546 // Add the members of the subgroups.
547 const int16_t *SubGroups = DiagSubGroups + Group->SubGroups;
548 for (; *SubGroups != (int16_t)-1; ++SubGroups)
549 NotFound &= getDiagnosticsInGroup(Flavor, &OptionTable[(short)*SubGroups],
556 DiagnosticIDs::getDiagnosticsInGroup(diag::Flavor Flavor, StringRef Group,
557 SmallVectorImpl<diag::kind> &Diags) const {
558 auto Found = std::lower_bound(std::begin(OptionTable), std::end(OptionTable),
560 [](const WarningOption &LHS, StringRef RHS) {
561 return LHS.getName() < RHS;
563 if (Found == std::end(OptionTable) || Found->getName() != Group)
564 return true; // Option not found.
566 return ::getDiagnosticsInGroup(Flavor, Found, Diags);
569 void DiagnosticIDs::getAllDiagnostics(diag::Flavor Flavor,
570 SmallVectorImpl<diag::kind> &Diags) const {
571 for (unsigned i = 0; i != StaticDiagInfoSize; ++i)
572 if (StaticDiagInfo[i].getFlavor() == Flavor)
573 Diags.push_back(StaticDiagInfo[i].DiagID);
576 StringRef DiagnosticIDs::getNearestOption(diag::Flavor Flavor,
579 unsigned BestDistance = Group.size() + 1; // Sanity threshold.
580 for (const WarningOption &O : OptionTable) {
581 // Don't suggest ignored warning flags.
582 if (!O.Members && !O.SubGroups)
585 unsigned Distance = O.getName().edit_distance(Group, true, BestDistance);
586 if (Distance > BestDistance)
589 // Don't suggest groups that are not of this kind.
590 llvm::SmallVector<diag::kind, 8> Diags;
591 if (::getDiagnosticsInGroup(Flavor, &O, Diags) || Diags.empty())
594 if (Distance == BestDistance) {
595 // Two matches with the same distance, don't prefer one over the other.
597 } else if (Distance < BestDistance) {
598 // This is a better match.
600 BestDistance = Distance;
607 /// ProcessDiag - This is the method used to report a diagnostic that is
608 /// finally fully formed.
609 bool DiagnosticIDs::ProcessDiag(DiagnosticsEngine &Diag) const {
610 Diagnostic Info(&Diag);
612 assert(Diag.getClient() && "DiagnosticClient not set!");
614 // Figure out the diagnostic level of this message.
615 unsigned DiagID = Info.getID();
616 DiagnosticIDs::Level DiagLevel
617 = getDiagnosticLevel(DiagID, Info.getLocation(), Diag);
619 // Update counts for DiagnosticErrorTrap even if a fatal error occurred
620 // or diagnostics are suppressed.
621 if (DiagLevel >= DiagnosticIDs::Error) {
622 ++Diag.TrapNumErrorsOccurred;
623 if (isUnrecoverable(DiagID))
624 ++Diag.TrapNumUnrecoverableErrorsOccurred;
627 if (Diag.SuppressAllDiagnostics)
630 if (DiagLevel != DiagnosticIDs::Note) {
631 // Record that a fatal error occurred only when we see a second
632 // non-note diagnostic. This allows notes to be attached to the
633 // fatal error, but suppresses any diagnostics that follow those
635 if (Diag.LastDiagLevel == DiagnosticIDs::Fatal)
636 Diag.FatalErrorOccurred = true;
638 Diag.LastDiagLevel = DiagLevel;
641 // If a fatal error has already been emitted, silence all subsequent
643 if (Diag.FatalErrorOccurred && Diag.SuppressAfterFatalError) {
644 if (DiagLevel >= DiagnosticIDs::Error &&
645 Diag.Client->IncludeInDiagnosticCounts()) {
652 // If the client doesn't care about this message, don't issue it. If this is
653 // a note and the last real diagnostic was ignored, ignore it too.
654 if (DiagLevel == DiagnosticIDs::Ignored ||
655 (DiagLevel == DiagnosticIDs::Note &&
656 Diag.LastDiagLevel == DiagnosticIDs::Ignored))
659 if (DiagLevel >= DiagnosticIDs::Error) {
660 if (isUnrecoverable(DiagID))
661 Diag.UnrecoverableErrorOccurred = true;
663 // Warnings which have been upgraded to errors do not prevent compilation.
664 if (isDefaultMappingAsError(DiagID))
665 Diag.UncompilableErrorOccurred = true;
667 Diag.ErrorOccurred = true;
668 if (Diag.Client->IncludeInDiagnosticCounts()) {
672 // If we've emitted a lot of errors, emit a fatal error instead of it to
673 // stop a flood of bogus errors.
674 if (Diag.ErrorLimit && Diag.NumErrors > Diag.ErrorLimit &&
675 DiagLevel == DiagnosticIDs::Error) {
676 Diag.SetDelayedDiagnostic(diag::fatal_too_many_errors);
681 // Make sure we set FatalErrorOccurred to ensure that the notes from the
682 // diagnostic that caused `fatal_too_many_errors` won't be emitted.
683 if (Diag.CurDiagID == diag::fatal_too_many_errors)
684 Diag.FatalErrorOccurred = true;
685 // Finally, report it.
686 EmitDiag(Diag, DiagLevel);
690 void DiagnosticIDs::EmitDiag(DiagnosticsEngine &Diag, Level DiagLevel) const {
691 Diagnostic Info(&Diag);
692 assert(DiagLevel != DiagnosticIDs::Ignored && "Cannot emit ignored diagnostics!");
694 Diag.Client->HandleDiagnostic((DiagnosticsEngine::Level)DiagLevel, Info);
695 if (Diag.Client->IncludeInDiagnosticCounts()) {
696 if (DiagLevel == DiagnosticIDs::Warning)
700 Diag.CurDiagID = ~0U;
703 bool DiagnosticIDs::isUnrecoverable(unsigned DiagID) const {
704 if (DiagID >= diag::DIAG_UPPER_LIMIT) {
705 assert(CustomDiagInfo && "Invalid CustomDiagInfo");
706 // Custom diagnostics.
707 return CustomDiagInfo->getLevel(DiagID) >= DiagnosticIDs::Error;
710 // Only errors may be unrecoverable.
711 if (getBuiltinDiagClass(DiagID) < CLASS_ERROR)
714 if (DiagID == diag::err_unavailable ||
715 DiagID == diag::err_unavailable_message)
718 // Currently we consider all ARC errors as recoverable.
719 if (isARCDiagnostic(DiagID))
725 bool DiagnosticIDs::isARCDiagnostic(unsigned DiagID) {
726 unsigned cat = getCategoryNumberForDiag(DiagID);
727 return DiagnosticIDs::getCategoryNameFromID(cat).startswith("ARC ");