2370Error(diagnostics, ErrorCode.WRN_OptionalParamValueMismatch, lambdaParameter.GetFirstLocation(), p + 1, lambdaParamDefault, delegateParamDefault ?? ((object)MessageID.IDS_Missing.Localize())); 2377Error(diagnostics, ErrorCode.WRN_ParamsArrayInLambdaOnly, lambdaParameter.GetFirstLocation(), p + 1);

4883diagnostics.Add(ErrorCode.ERR_ObjectCallingBaseConstructor, constructor.GetFirstLocation(), containingType); 4894diagnostics.Add(ErrorCode.ERR_StructWithBaseConstructorCall, constructor.GetFirstLocation(), containingType); 4929errorLocation = constructor.GetFirstLocation();

25=> symbol.TryGetFirstLocation() ?? symbol.ContainingSymbol.GetFirstLocation();

779CheckFeatureAvailability(expression, MessageID.IDS_FeatureExpressionVariablesInQueriesAndInitializers, diagnostics, locals[0].GetFirstLocation());

225method.GetFirstLocation()); 584diagnostics.Add(ErrorCode.ERR_LocalFunctionMissingBody, localSymbol.GetFirstLocation(), localSymbol); 590diagnostics.Add(ErrorCode.ERR_ExternHasBody, localSymbol.GetFirstLocation(), localSymbol); 630blockDiagnostics.Add(ErrorCode.ERR_ReturnExpected, localSymbol.GetFirstLocation(), localSymbol);

1939Location la = snd.GetFirstLocation(); 1940Location lb = fst.GetFirstLocation(); 2025arg0 = srcSymbol.GetFirstLocation().SourceTree.FilePath; 2179arg0 = first.GetFirstLocation().SourceTree.FilePath;

603if (InSpan(sym.GetFirstLocation(), this.syntaxTree, memberSpan)) 612if (InSpan(implementation.GetFirstLocation(), this.syntaxTree, memberSpan))

117var location = isReceiverParameter ? iterator.GetFirstLocation() : parameter.GetFirstLocation(); 123diagnostics.Add(ErrorCode.ERR_UnsafeIteratorArgType, parameter.GetFirstLocation()); 127Location errorLocation = (iterator as SynthesizedSimpleProgramEntryPointSymbol)?.ReturnTypeSyntax.GetLocation() ?? iterator.GetFirstLocation();

455if (candidate.GetFirstLocation() == node.Identifier.GetLocation())

513if (declaredInThisScope && newLocation.SourceSpan.Start >= local.GetFirstLocation().SourceSpan.Start)

118var oldLocation = parameter.GetFirstLocation();

262string entryPointFileName = PathUtilities.GetFileName(entryPoint.GetFirstLocation().SourceTree!.FilePath);

1987diagnostics.Add(ErrorCode.ERR_MainClassNotClass, mainTypeOrNamespace.GetFirstLocation(), mainTypeOrNamespace); 2008diagnostics.Add(ErrorCode.WRN_MainIgnored, main.GetFirstLocation(), main); 2036noMainFoundDiagnostics.Add(ErrorCode.WRN_InvalidMainSig, candidate.GetFirstLocation(), candidate); 2044noMainFoundDiagnostics.Add(ErrorCode.WRN_MainCantBeGeneric, candidate.GetFirstLocation(), candidate); 2067diagnostics.Add(ErrorCode.ERR_NonTaskMainCantBeAsync, candidate.GetFirstLocation()); 2094var taskLocations = taskCandidates.SelectAsArray(s => s.GetFirstLocation()); 2104diagnostics.Add(new CSDiagnostic(info, candidate.GetFirstLocation())); 2146diagnostics.Add(ErrorCode.ERR_NoMainInClass, mainType.GetFirstLocation(), mainType); 2157diagnostics.Add(ErrorCode.ERR_EntryPointCannotBeUnmanagedCallersOnly, viableEntryPoint.GetFirstLocation()); 2168additionalLocations: viableEntryPoints.Select(m => m.GetFirstLocation()).OfType<Location>().AsImmutable()); 2170diagnostics.Add(new CSDiagnostic(info, viableEntryPoints.First().GetFirstLocation())); 3702var location = symbol.GetFirstLocation();

1833var loc = partial.GetFirstLocation(); 1957if (alias.Alias.GetFirstLocation().SourceSpan == declarationSyntax.Alias.Name.Span) 1990if (alias.Alias.GetFirstLocation().SourceSpan == declarationSyntax.Identifier.Span)

121Location warningLocation = i == 0 ? attributeLocation : module.GetFirstLocation(); 260this.AddDiagnostic(ErrorCode.WRN_CLS_BadAttributeType, symbol.GetFirstLocation(), symbol); 335this.AddDiagnostic(ErrorCode.WRN_CLS_NoVarArgs, symbol.GetFirstLocation()); 414this.AddDiagnostic(ErrorCode.WRN_CLS_VolatileField, symbol.GetFirstLocation(), symbol); 460this.AddDiagnostic(ErrorCode.WRN_CLS_MeaninglessOnPrivateType, symbol.GetFirstLocation(), symbol); 504this.AddDiagnostic(ErrorCode.WRN_CLS_BadInterfaceMember, symbol.GetFirstLocation(), symbol); 508this.AddDiagnostic(ErrorCode.WRN_CLS_NoAbstractMembers, symbol.GetFirstLocation(), symbol); 525this.AddDiagnostic(ErrorCode.WRN_CLS_BadInterface, symbol.GetFirstLocation(), symbol, interfaceType); 536this.AddDiagnostic(ErrorCode.WRN_CLS_BadBase, symbol.GetFirstLocation(), symbol, baseType); 549this.AddDiagnostic(ErrorCode.WRN_CLS_IllegalTrueInFalse, symbol.GetFirstLocation(), symbol, containingType); 566this.AddDiagnostic(ErrorCode.WRN_CLS_BadTypeVar, typeParameter.GetFirstLocation(), constraintType.Type); 580this.AddDiagnostic(ErrorCode.WRN_CLS_BadArgType, parameter.GetFirstLocation(), parameter.Type); 762this.AddDiagnostic(code, symbol.GetFirstLocation(), symbol); 795this.AddDiagnostic(code, symbol.GetFirstLocation(), symbol); 896this.AddDiagnostic(ErrorCode.WRN_CLS_BadIdentifierCase, symbol.GetFirstLocation(), symbol); 915this.AddDiagnostic(code, symbol.GetFirstLocation(), symbol); 921this.AddDiagnostic(ErrorCode.WRN_CLS_BadIdentifierCase, symbol.GetFirstLocation(), symbol); 956this.AddDiagnostic(ErrorCode.WRN_CLS_BadIdentifier, symbol.GetFirstLocation(), name);

587Location location = parameter.GetFirstLocation(); 608Location location = typeParameter.GetFirstLocation();

1723diagnosticsForThisMethod.Add(ErrorCode.ERR_TooManyLocals, method.GetFirstLocation());

614diagnostics.Add(ErrorCode.ERR_TypeReserved, userDefinedAttribute.GetFirstLocation(), description.FullName);

503location = method.GetFirstLocation();

142Diagnostics.Add(ErrorCode.WRN_UnreferencedLabel, label.GetFirstLocation()); 342var targetStart = node.Label.GetFirstLocation().SourceSpan.Start; 346var usingStart = usingDecl.symbol.GetFirstLocation().SourceSpan.Start;

95if (IsInside && !RegionContains(node.RangeVariableSymbol.GetFirstLocation().SourceSpan))

233((param.RefKind != RefKind.None && !param.IsImplicitlyDeclared && !RegionContains(param.GetFirstLocation().SourceSpan)) ||

103diagnostics.Add(ErrorCode.ERR_ReturnExpected, method.GetFirstLocation(), method);

66method.GetFirstLocation());

33diagnostics.Add(ErrorCode.ERR_UnsupportedFeatureInRuntimeAsync, variable.GetFirstLocation(), method);

625_diagnostics.Add(ErrorCode.ERR_ExpressionTreeCantContainRefStruct, p.GetFirstLocation(), p.Type.Name); 630_diagnostics.Add(ErrorCode.ERR_LambdaWithAttributesToExpressionTree, p.GetFirstLocation());

239target.CheckAllConstraints(DeclaringCompilation, conversions, GetFirstLocation(), diagnostics); 361diagnostics.Add(ErrorCode.ERR_BadExternAlias, GetFirstLocation(), Name);

97Location location = anonymous.GetFirstLocation();

92diagnostics.Add(pair.UseSiteInfo, pair.TypeParameter.GetFirstLocation()); 101Location location = typeParameter.GetFirstLocation(); 118diagnostics.Add(ErrorCode.ERR_ClassIsCombinedWithRefStruct, typeParameter.GetFirstLocation());

62return (TypeWithAnnotations.Create(Binder.GetSpecialType(DeclaringCompilation, SpecialType.System_Void, GetFirstLocation(), diagnostics)), 118diagnostics.Add(ErrorCode.ERR_ReceiverParameterSameNameAsTypeParameter, parameter.GetFirstLocation(), name);

188var memberLocation = implementingMember.GetFirstLocation(); 358var memberLocation = implementingMember.GetFirstLocation(); 370diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportStaticAbstractMembersInInterfaces, implementingMember.GetFirstLocation()); 411diagnostics.Add(ErrorCode.ERR_ExplicitImplCollisionOnRefOut, explicitInterfaceType.GetFirstLocation(), explicitInterfaceType, implementedMember); 416diagnostics.Add(ErrorCode.WRN_ExplicitImplCollision, implementingMember.GetFirstLocation(), implementingMember); 428diagnostics.Add(ErrorCode.WRN_ExplicitImplCollision, implementingMember.GetFirstLocation(), implementingMember);

63diagnostics.ReportUseSite(this.DeclaringCompilation.GetSpecialType(SpecialType.System_Object), GetFirstLocation());

240_ => GetFirstLocation()

77_declarationDiagnostics.Add(ErrorCode.ERR_BadExtensionAgg, GetFirstLocation());

571diagnostics.Add(ErrorCode.ERR_UnderspecifiedExtension, extensionMember.GetFirstLocation(), typeParameter);

1427diagnostics.Add(ErrorCode.ERR_OutAttrOnRefParam, this.GetFirstLocation()); 1434diagnostics.Add(ErrorCode.ERR_InAttrOnOutParam, this.GetFirstLocation()); 1441diagnostics.Add(ErrorCode.ERR_OutAttrOnInParam, this.GetFirstLocation()); 1448diagnostics.Add(ErrorCode.ERR_OutAttrOnRefReadonlyParam, this.GetFirstLocation());

288diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 293diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 300diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 305diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 311diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 323diagnostics.Add(ErrorCode.ERR_ScopedMismatchInParameterOfPartial, implementation.GetFirstLocation(), new FormattedSymbol(implementation.Parameters[i], SymbolDisplayFormat.ShortFormat));

61var location = this.GetFirstLocation(); 99parameter.Type.CheckAllConstraints(compilation, conversions, parameter.GetFirstLocation(), diagnostics);

139diagnostics.Add(ErrorCode.ERR_EventNeedsBothAccessors, this.GetFirstLocation(), this); 144diagnostics.Add(ErrorCode.ERR_ExplicitEventFieldImpl, this.GetFirstLocation()); 151Binder.CheckFeatureAvailability(syntax, MessageID.IDS_DefaultInterfaceImplementation, diagnostics, this.GetFirstLocation()); 155diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportDefaultInterfaceImplementation, this.GetFirstLocation());

105diagnostics.Add(ErrorCode.ERR_BadVisDelegateReturn, delegateType.GetFirstLocation(), delegateType, invoke.ReturnType); 111diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, delegateType.GetFirstLocation(), invoke.ReturnType, delegateType); 120diagnostics.Add(ErrorCode.ERR_BadVisDelegateParam, delegateType.GetFirstLocation(), delegateType, parameterSymbol.Type); 124diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, delegateType.GetFirstLocation(), parameterSymbol.Type, delegateType); 128diagnostics.Add(delegateType.GetFirstLocation(), useSiteInfo);

221diagnostics.Add(ErrorCode.ERR_EnumeratorOverflow, this.GetFirstLocation(), this);

202return this.GetFirstLocation();

588Location location = this.GetFirstLocation(); 827var location = this.GetFirstLocation(); 861diagnostics.Add(ErrorCode.ERR_ExplicitPropertyAddingAccessor, thisAccessor.GetFirstLocation(), thisAccessor, explicitlyImplementedEvent); 873diagnostics.Add(ErrorCode.ERR_PartialMemberTypeDifference, implementation.GetFirstLocation()); 877diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 881diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 888diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 893diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 899diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 907diagnostics.Add(ErrorCode.ERR_PartialMemberExtendedModDifference, implementation.GetFirstLocation());

73diagnostics.Add(ErrorCode.ERR_InterfaceEventInitializer, this.GetFirstLocation(), this); 77diagnostics.Add(ErrorCode.ERR_AbstractEventInitializer, this.GetFirstLocation(), this); 81diagnostics.Add(ErrorCode.ERR_ExternEventInitializer, this.GetFirstLocation(), this); 85diagnostics.Add(ErrorCode.ERR_PartialEventInitializer, this.GetFirstLocation(), this); 99diagnostics.Add(ErrorCode.ERR_FieldlikeEventsInRoStruct, this.GetFirstLocation()); 108diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportStaticAbstractMembersInInterfaces, this.GetFirstLocation()); 115diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportDefaultInterfaceImplementation, this.GetFirstLocation()); 120diagnostics.Add(ErrorCode.ERR_EventNeedsBothAccessors, this.GetFirstLocation(), this);

220=> ImmutableArray.Create(GetFirstLocation()); 223=> GetFirstLocation(); 333diagnostics.Add(ErrorCode.ERR_CircConstValue, GetFirstLocation(), this);

415=> ImmutableArray.Create(GetFirstLocation());

250diagnostics.Add(ErrorCode.ERR_PartialModifierConflict, GetFirstLocation(), this); 267diagnostics.Add(AccessCheck.GetProtectedMemberInSealedTypeError(ContainingType), GetFirstLocation(), this); 369diagnostics.Add(ErrorCode.ERR_AbstractSealedStatic, GetFirstLocation(), this); 375diagnostics.Add(ErrorCode.ERR_SealedStaticClass, GetFirstLocation(), this); 426modifierErrors = ModifierUtils.CheckAccessibility(mods, this, isExplicitInterfaceImplementation: false, diagnostics, this.GetFirstLocation()); 447diagnostics.Add(ErrorCode.ERR_FileTypeNoExplicitAccessibility, GetFirstLocation(), this); 1365diagnostics.Add(ErrorCode.ERR_PartialTypeKindConflict, t.GetFirstLocation(), t); 1369diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, t.GetFirstLocation(), this, t.Name); 1386Binder.CheckFeatureAvailability(t.DeclaringSyntaxReferences[0].GetSyntax(), MessageID.IDS_DefaultInterfaceImplementation, diagnostics, t.GetFirstLocation()); 1435diagnostics.Add(ErrorCode.ERR_MemberNameSameAsType, member.GetFirstLocation(), typeName); 1443diagnostics.Add(ErrorCode.ERR_MemberNameSameAsExtendedType, member.GetFirstLocation(), typeName); 1872var location = GetFirstLocation(); 2001diagnostics.Add(ErrorCode.ERR_CloneDisallowedInRecord, member.GetFirstLocation()); 2114diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, symbol.GetFirstLocation(), containerForDiagnostics, symbol.Name); 2141diagnostics.Add(ErrorCode.ERR_DuplicateConversionInClass, conversion.GetFirstLocation(), containerForDiagnostics); 2225(d.Location == arg.method1.GetFirstLocation() || d.Location == arg.underlying1.AssociatedSymbol?.TryGetFirstLocation() || 2226d.Location == arg.method2.GetFirstLocation() || d.Location == arg.underlying2.AssociatedSymbol?.TryGetFirstLocation()), 2243diagnostics.Add(ErrorCode.ERR_OverloadRefKind, method1.GetFirstLocation(), containerForDiagnostics, methodKind.Localize(), refKind1.ToParameterDisplayString(), refKind2.ToParameterDisplayString()); 2260diagnostics.Add(ErrorCode.ERR_MemberAlreadyExists, method1.GetFirstLocation(), methodName, containerForDiagnostics); 2319diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, indexer.GetFirstLocation(), containerForDiagnostics, indexerName); 2352diagnostics.Add(ErrorCode.ERR_InconsistentIndexerNames, indexer.GetFirstLocation()); 2365diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, indexer.GetFirstLocation(), containerForDiagnostics, indexerName); 2374diagnostics.Add(ErrorCode.ERR_MemberAlreadyExists, indexer.GetFirstLocation(), SyntaxFacts.GetText(SyntaxKind.ThisKeyword), containerForDiagnostics); 2554diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, dup.GetFirstLocation(), this, tp.Name); 2668diagnostics.Add(ErrorCode.ERR_StructLayoutCyclePrimaryConstructorParameter, parameterSymbol.GetFirstLocation(), parameterSymbol, type); 2676diagnostics.Add(ErrorCode.ERR_StructLayoutCycle, symbol.GetFirstLocation(), symbol, type); 2707diagnostics.Add(ErrorCode.ERR_ProtectedInStatic, member.GetFirstLocation(), member); 2786diagnostics.Add(ErrorCode.ERR_OperatorNeedsMatch, op1.GetFirstLocation(), op1, 2792diagnostics.Add(ErrorCode.ERR_CheckedOperatorNeedsMatch, op1.GetFirstLocation(), op1); 2890diagnostics.Add(ErrorCode.WRN_EqualsWithoutGetHashCode, this.GetFirstLocation(), this); 2896diagnostics.Add(ErrorCode.WRN_EqualityOpWithoutEquals, this.GetFirstLocation(), this); 2902diagnostics.Add(ErrorCode.WRN_EqualityOpWithoutGetHashCode, this.GetFirstLocation(), this); 2914_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Runtime_CompilerServices_RequiredMemberAttribute__ctor, diagnostics, GetFirstLocation()); 2919_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Runtime_CompilerServices_CompilerFeatureRequiredAttribute__ctor, diagnostics, GetFirstLocation()); 2924_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Diagnostics_CodeAnalysis_SetsRequiredMembersAttribute__ctor, diagnostics, GetFirstLocation()); 2938diagnostics.Add(ErrorCode.ERR_RequiredMembersBaseTypeInvalid, method.GetFirstLocation(), BaseTypeNoUseSiteDiagnostics); 2952diagnostics.Add(ErrorCode.ERR_ScriptsAndSubmissionsCannotHaveRequiredMembers, member.GetFirstLocation()); 2998diagnostics.Add(ErrorCode.ERR_StructLayoutCycle, f.GetFirstLocation(), f, type); 3062diagnostics.Add(ErrorCode.WRN_SequentialOnPartialClass, GetFirstLocation(), this); 3075diagnostics.Add(ErrorCode.WRN_SequentialOnPartialClass, GetFirstLocation(), this); 4037diagnostics.Add(ErrorCode.ERR_PartialMethodMustHaveLatent, method.GetFirstLocation(), method); 4041diagnostics.Add(ErrorCode.ERR_PartialMethodWithAccessibilityModsMustHaveImplementation, method.GetFirstLocation(), method); 4050property.GetFirstLocation(), 4060constructor.GetFirstLocation(), 4070ev.GetFirstLocation(), 4115diagnostics.Add(ErrorCode.ERR_PartialMethodOnlyOneActual, currentMethod.GetFirstLocation()); 4121diagnostics.Add(ErrorCode.ERR_PartialMethodOnlyOneLatent, currentMethod.GetFirstLocation()); 4134diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateImplementation, currentProperty.GetFirstLocation()); 4139diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateDefinition, currentProperty.GetFirstLocation()); 4145diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateInitializer, currentProperty.GetFirstLocation()); 4168diagnostics.Add(errorCode, propertyToBlame.GetFirstLocation(), foundAccessor); 4184diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateImplementation, currentConstructor.GetFirstLocation(), currentConstructor); 4190diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateDefinition, currentConstructor.GetFirstLocation(), currentConstructor); 4204diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateImplementation, currentEvent.GetFirstLocation(), currentEvent); 4210diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateDefinition, currentEvent.GetFirstLocation(), currentEvent); 4438return locationFrom.GetFirstLocation(); 4447return locationFrom.GetFirstLocation(); 4577diagnostics.Add(ErrorCode.ERR_InterfacesCantContainConstructors, member.GetFirstLocation()); 4584diagnostics.Add(ErrorCode.ERR_OnlyClassesCanContainDestructors, member.GetFirstLocation()); 4625diagnostics.Add(ErrorCode.ERR_ExtensionDisallowsMember, member.GetFirstLocation()); 4687var location = m.GetFirstLocation(); 4723MessageID.IDS_FeatureStructFieldInitializers.CheckFeatureAvailability(diagnostics, symbol.DeclaringCompilation, symbol.GetFirstLocation()); 4729diagnostics.Add(ErrorCode.ERR_StructHasInitializersAndNoDeclaredConstructor, GetFirstLocation()); 4848diagnostics.Add(ErrorCode.WRN_RecordEqualsWithoutGetHashCode, thisEquals.GetFirstLocation(), declaration.Name); 4901diagnostics.Add(ErrorCode.ERR_NonPublicAPIInRecord, deconstruct.GetFirstLocation(), deconstruct); 4906diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, deconstruct.GetFirstLocation(), deconstruct, targetMethod.ReturnType); 4911diagnostics.Add(ErrorCode.ERR_StaticAPIInRecord, deconstruct.GetFirstLocation(), deconstruct); 4946diagnostics.Add(ErrorCode.ERR_RecordAmbigCtor, copyCtor.GetFirstLocation()); 4955diagnostics.Add(ErrorCode.ERR_RecordAmbigCtor, this.GetFirstLocation()); 4959diagnostics.Add(ErrorCode.ERR_CopyConstructorWrongAccessibility, constructor.GetFirstLocation(), constructor); 5004diagnostics.Add(ErrorCode.ERR_NonPrivateAPIInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod); 5009diagnostics.Add(ErrorCode.ERR_NonProtectedAPIInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod); 5016diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod, targetMethod.ReturnType); 5052var languageVersion = ((CSharpParseOptions)this.GetFirstLocation().SourceTree!.Options).LanguageVersion; 5056this.GetFirstLocation(), 5079toStringMethod.GetFirstLocation()); 5163param.GetFirstLocation(), 5192diagnostics.Add(ErrorCode.ERR_HiddenPositionalMember, param.GetFirstLocation(), symbol); 5232diagnostics.Add(ErrorCode.ERR_SealedAPIInRecord, getHashCode.GetFirstLocation(), getHashCode); 5266diagnostics.Add(ErrorCode.ERR_NonPrivateAPIInRecord, equalityContract.GetFirstLocation(), equalityContract); 5271diagnostics.Add(ErrorCode.ERR_NonProtectedAPIInRecord, equalityContract.GetFirstLocation(), equalityContract); 5278diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, equalityContract.GetFirstLocation(), equalityContract, targetProperty.Type); 5288diagnostics.Add(ErrorCode.ERR_EqualityContractRequiresGetter, equalityContract.GetFirstLocation(), equalityContract); 5332diagnostics.Add(ErrorCode.ERR_NonPublicAPIInRecord, thisEquals.GetFirstLocation(), thisEquals); 5337diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, thisEquals.GetFirstLocation(), thisEquals, targetMethod.ReturnType); 5352diagnostics.Add(ErrorCode.ERR_NotOverridableAPIInRecord, symbol.GetFirstLocation(), symbol); 5356diagnostics.Add(ErrorCode.ERR_StaticAPIInRecord, symbol.GetFirstLocation(), symbol);

105diagnostics.Add(ErrorCode.ERR_UnimplementedAbstractMethod, this.GetFirstLocation(), this, abstractMember); 168Diagnostic diag = new CSDiagnostic(new CSDiagnosticInfo(ErrorCode.ERR_DuplicateExplicitImpl, interfaceMember), this.GetFirstLocation()); 229var info = new CSDiagnosticInfo(ErrorCode.ERR_MixingWinRTEventWithRegular, args, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<Location>(this.GetFirstLocation())); 230diagnostics.Add(info, implementingEvent.GetFirstLocation()); 329? implementingMember.GetFirstLocation() 330: this.GetFirstLocation(); 347return GetImplementsLocation(implementedInterface) ?? this.GetFirstLocation(); 566diagnostics.Add(ErrorCode.ERR_CantOverrideSealed, method.GetFirstLocation(), method, overridden); 758var overridingMemberLocation = overridingMember.GetFirstLocation(); 861diagnostics.Add(ErrorCode.WRN_MultipleRuntimeOverrideMatches, ambiguousMethod.GetFirstLocation(), ambiguousMethod, overridingMember); 870var overridingMemberLocation = overridingMember.GetFirstLocation(); 1043if (Binder.ReportUseSite(overriddenMember, diagnostics, overridingMember.GetFirstLocation())) 1051var overridingMemberLocation = overridingProperty.GetFirstLocation(); 1104overridingProperty.GetMethod.GetFirstLocation(), 1114overridingProperty.SetMethod.GetFirstLocation(), 1258diagnostics.Add(ErrorCode.WRN_DoesNotReturnMismatch, overrideMethod.GetFirstLocation(), new FormattedSymbol(overrideMethod, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1576var hidingMemberLocation = hidingMember.GetFirstLocation(); 1697diagnostics.Add(ErrorCode.ERR_HidingAbstractMethod, associatedPropertyOrEvent.GetFirstLocation(), associatedPropertyOrEvent, hiddenMember); 1791diagnostics.Add(ErrorCode.ERR_UnifyingInterfaceInstantiations, this.GetFirstLocation(), this, interface1, interface2);

108return TypeSyntax?.Location ?? this.GetFirstLocation();

365diagnostics.Add(code, GetFirstLocation(), this, returnType.Type); 377diagnostics.Add(code, GetFirstLocation(), this, parameter.Type); 386diagnostics.Add(code, GetFirstLocation(), this, extensionParameter.Type); 390diagnostics.Add(GetFirstLocation(), useSiteInfo); 409diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, GetFirstLocation(), returnType.Type, containingType); 416diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, GetFirstLocation(), param.Type, containingType);

1492diagnostics.Add(ErrorCode.ERR_ComImportWithUserCtor, this.GetFirstLocation()); 1501diagnostics.Add(ErrorCode.ERR_ComImportWithImpl, this.GetFirstLocation(), this, ContainingType); 1518diagnostics.Add(errorCode, this.GetFirstLocation(), this); 1527AsyncMethodChecks(verifyReturnType: true, this.GetFirstLocation(), diagnostics);

530diagnostics.Add(ErrorCode.ERR_PartialWrongConstraints, GetFirstLocation(), this, typeParameters[i]); 1617diagnostics.Add(ErrorCode.ERR_ComImportWithBase, this.GetFirstLocation(), this.Name); 1874diagnostics.Add(ErrorCode.WRN_ObsoleteMembersShouldNotBeRequired, member.GetFirstLocation(), member); 1881Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Reflection_DefaultMemberAttribute__ctor, diagnostics, indexerSymbol.TryGetFirstLocation() ?? GetFirstLocation()); 1888diagnostics.Add(ErrorCode.ERR_InvalidInlineArrayLayout, GetFirstLocation()); 1897diagnostics.Add(ErrorCode.ERR_InlineArrayUnsupportedElementFieldModifier, elementField.TryGetFirstLocation() ?? GetFirstLocation()); 1911diagnostics.Add(ErrorCode.WRN_InlineArrayIndexerNotUsed, indexer.TryGetFirstLocation() ?? GetFirstLocation()); 1919diagnostics.Add(ErrorCode.WRN_InlineArraySliceNotUsed, slice.TryGetFirstLocation() ?? GetFirstLocation()); 1942diagnostics.Add(ErrorCode.WRN_InlineArrayConversionOperatorNotUsed, conversion.TryGetFirstLocation() ?? GetFirstLocation()); 1951diagnostics.Add(ErrorCode.WRN_InlineArrayNotSupportedByLanguage, elementField.TryGetFirstLocation() ?? GetFirstLocation()); 1955diagnostics.Add(ErrorCode.WRN_InlineArrayNotSupportedByLanguage, GetFirstLocation()); 1961diagnostics.Add(ErrorCode.ERR_InvalidInlineArrayFields, GetFirstLocation()); 1966diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportInlineArrayTypes, GetFirstLocation()); 1993diagnostics.Add(ErrorCode.ERR_EmbeddedAttributeMustFollowPattern, GetFirstLocation());

341var info = diagnostics.Add(ErrorCode.ERR_PartialMultipleBases, GetFirstLocation(), this); 421diagnostics.Add(GetFirstLocation(), useSiteInfo); 679diagnostics.Add(ErrorCode.ERR_CycleInInterfaceInheritance, GetFirstLocation(), this, t))); 703diagnostics.Add(GetFirstLocation(), useSiteInfo); 761diagnostics.Add(ErrorCode.ERR_CircularBase, GetFirstLocation(), declaredBase, this)); 781diagnostics.Add(useSiteInfo.Diagnostics.IsNullOrEmpty() ? Location.None : (FindBaseRefSyntax(declaredBase) ?? GetFirstLocation()), useSiteInfo);

77Binder.ReportUseSite(defaultUnderlyingType, diagnostics, this.GetFirstLocation());

301diagnostics.Add(ErrorCode.ERR_DuplicateAlias, pair.Value.Alias.GetFirstLocation(), pair.Key); 370diagnostics.Add(ErrorCode.ERR_DuplicateAlias, externAlias.Alias.GetFirstLocation(), externAlias.Alias.Name); 492diagnostics.Add(ErrorCode.ERR_DuplicateAlias, existingAlias.Alias.GetFirstLocation(), existingAlias.Alias.Name);

233this.ReturnType.CheckAllConstraints(compilation, conversions, this.GetFirstLocation(), diagnostics); 237parameter.Type.CheckAllConstraints(compilation, conversions, parameter.GetFirstLocation(), diagnostics); 273compilation.EnsureExtensionMarkerAttributeExists(diagnostics, GetFirstLocation(), modifyCompilation: true);

492diagnostics.Add(ErrorCode.ERR_PartialMethodReturnTypeDifference, implementation.GetFirstLocation()); 497diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), definition, implementation); 502diagnostics.Add(ErrorCode.ERR_PartialMemberRefReturnDifference, implementation.GetFirstLocation()); 507diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 512diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementation.GetFirstLocation()); 517diagnostics.Add(ErrorCode.ERR_PartialMethodExtensionDifference, implementation.GetFirstLocation()); 522diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 527diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 533diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 541diagnostics.Add(ErrorCode.ERR_PartialMemberExtendedModDifference, implementation.GetFirstLocation()); 552diagnostics.Add(ErrorCode.ERR_ScopedMismatchInParameterOfPartial, implementingMethod.GetFirstLocation(), new FormattedSymbol(implementingParameter, SymbolDisplayFormat.ShortFormat)); 569diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInReturnTypeOnPartial, implementingMethod.GetFirstLocation()); 573diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInParameterTypeOnPartial, implementingMethod.GetFirstLocation(), new FormattedSymbol(implementingParameter, SymbolDisplayFormat.ShortFormat)); 583diagnostics.Add(ErrorCode.WRN_PartialMethodTypeDifference, implementation.GetFirstLocation(), 622diagnostics.Add(ErrorCode.ERR_PartialMethodInconsistentConstraints, implementation.GetFirstLocation(), implementation, typeParameter2.Name); 626diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInConstraintsOnPartialImplementation, implementation.GetFirstLocation(), implementation, typeParameter2.Name); 703diagnostics.Add(report, typeParameter.GetFirstLocation(), this, typeParameter,

838diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementationAccessor.GetFirstLocation()); 843diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementationAccessor.GetFirstLocation()); 849diagnostics.Add(ErrorCode.ERR_PartialPropertyInitMismatch, implementationAccessor.GetFirstLocation(), implementationAccessor, accessorName);

738diagnostics.Add(ErrorCode.ERR_PartialMemberTypeDifference, implementation.GetFirstLocation()); 743diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 749diagnostics.Add(ErrorCode.ERR_PartialMemberRefReturnDifference, implementation.GetFirstLocation()); 755diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 762diagnostics.Add(ErrorCode.ERR_PartialPropertyRequiredDifference, implementation.GetFirstLocation()); 767diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 772diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementation.GetFirstLocation()); 777diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 782diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 788diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 796diagnostics.Add(ErrorCode.ERR_PartialMemberExtendedModDifference, implementation.GetFirstLocation()); 808diagnostics.Add(ErrorCode.ERR_ScopedMismatchInParameterOfPartial, implementation.GetFirstLocation(), new FormattedSymbol(implementation.Parameters[i], SymbolDisplayFormat.ShortFormat));

354diagnostics.Add(ErrorCode.WRN_AccessorDoesNotUseBackingField, accessorToBlame.GetFirstLocation(), accessorName, property); 944diagnostics.Add(ErrorCode.ERR_RefPropertyCannotHaveSetAccessor, _setMethod.GetFirstLocation()); 981diagnostics.Add(ErrorCode.ERR_AutoPropertyMustHaveGetAccessor, _setMethod!.GetFirstLocation()); 1070compilation.EnsureExtensionMarkerAttributeExists(diagnostics, GetFirstLocation(), modifyCompilation: true); 1159diagnostics.Add(ErrorCode.ERR_InvalidPropertyAccessMod, accessor.GetFirstLocation(), accessor, this); 1181diagnostics.Add(ErrorCode.ERR_PrivateAbstractAccessor, accessor.GetFirstLocation(), accessor); 1204diagnostics.Add(ErrorCode.ERR_ExplicitPropertyAddingAccessor, thisAccessor.GetFirstLocation(), thisAccessor, explicitlyImplementedProperty); 1209diagnostics.Add(ErrorCode.ERR_ExplicitPropertyMismatchInitOnly, thisAccessor.GetFirstLocation(), thisAccessor, otherAccessor); 1808parameter.Type.CheckAllConstraints(DeclaringCompilation, conversions, parameter.GetFirstLocation(), diagnostics);

67diagnostics.Add(ErrorCode.ERR_InterfacesCantContainConversionOrEqualityOperators, this.GetFirstLocation()); 93diagnostics.Add(ErrorCode.ERR_ExplicitImplementationOfOperatorsMustBeStatic, this.GetFirstLocation(), this); 100diagnostics.Add(ErrorCode.ERR_OperatorsMustBePublic, this.GetFirstLocation(), this); 106diagnostics.Add(ErrorCode.ERR_OperatorsMustBeStaticAndPublic, this.GetFirstLocation(), this); 475diagnostics.Add(ErrorCode.ERR_IllegalRefParam, this.GetFirstLocation()); 565diagnostics.Add(ErrorCode.ERR_OperatorMustReturnVoid, this.GetFirstLocation()); 648diagnostics.Add(ErrorCode.ERR_ConversionWithInterface, this.GetFirstLocation(), this); 662diagnostics.Add(IsInInterfaceAndAbstractOrVirtual() ? ErrorCode.ERR_AbstractConversionNotInvolvingContainedType : ErrorCode.ERR_ConversionNotInvolvingContainedType, this.GetFirstLocation()); 673diagnostics.Add(ErrorCode.ERR_IdentityConversion, this.GetFirstLocation()); 741diagnostics.Add(ErrorCode.ERR_BadDynamicConversion, this.GetFirstLocation(), this); 769diagnostics.Add(ErrorCode.ERR_ConversionWithBase, this.GetFirstLocation(), this); 774diagnostics.Add(ErrorCode.ERR_ConversionWithDerived, this.GetFirstLocation(), this); 777diagnostics.Add(this.GetFirstLocation(), useSiteInfo); 786diagnostics.Add(ErrorCode.ERR_OperatorCantReturnVoid, this.GetFirstLocation()); 809this.GetFirstLocation()); 821diagnostics.Add(ErrorCode.ERR_OpTFRetType, this.GetFirstLocation()); 878this.GetFirstLocation()); 887diagnostics.Add(IsInInterfaceAndAbstractOrVirtual() ? ErrorCode.ERR_BadAbstractIncDecRetType : ErrorCode.ERR_BadIncDecRetType, this.GetFirstLocation()); 890diagnostics.Add(this.GetFirstLocation(), useSiteInfo); 951this.GetFirstLocation()); 955var location = this.GetFirstLocation(); 973this.GetFirstLocation()); 984diagnostics.Add(ErrorCode.ERR_BadAbstractEqualityOperatorSignature, this.GetFirstLocation(), this.ContainingType);

38protected sealed override Location ReturnTypeLocation => GetFirstLocation();

48diagnostics.Add(ErrorCode.ERR_TypeVariableSameAsParent, result.GetFirstLocation(), result.Name);

280symbol.CheckUnsafeModifier(modifiers, symbol.GetFirstLocation(), diagnostics);

47diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseMethod, GetFirstLocation(), this, ContainingType.BaseTypeNoUseSiteDiagnostics);

45containingType.GetFirstLocation(), 63=> ContainingType.GetFirstLocation(); 71ContainingType.GetFirstLocation(), 128diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseEqualityContract, overriding.GetFirstLocation(), overriding, overriding.ContainingType.BaseTypeNoUseSiteDiagnostics);

41containingType, containingType.GetFirstLocation(), (CSharpSyntaxNode)containingType.SyntaxReferences[0].GetSyntax(), 50protected sealed override Location ReturnTypeLocation => GetFirstLocation();

54diagnostics.Add(ErrorCode.ERR_DoesNotOverrideMethodFromObject, overriding.GetFirstLocation(), overriding);

15: base(containingType, name, containingType.GetFirstLocation(), (CSharpSyntaxNode)containingType.SyntaxReferences[0].GetSyntax(),

112diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseMethod, GetFirstLocation(), this, ContainingType.BaseTypeNoUseSiteDiagnostics); 290diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseMethod, overriding.GetFirstLocation(), overriding, baseType);

43backingParameter.GetFirstLocation(),

211_locations.IsEmpty ? null : GetFirstLocation(),

868diagnostics.Add(ErrorCode.ERR_DuplicateExplicitImpl, implementingType.GetFirstLocation(), interfaceMember); 1798implementingEvent.GetFirstLocation(), new FormattedSymbol(implementedEvent, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1829implementingMethod.GetFirstLocation(), new FormattedSymbol(implementedMethod.ConstructedFrom, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1850implementingMethod.GetFirstLocation(), 2158return member.GetFirstLocation(); 2164return snt?.GetImplementsLocation(@interface) ?? implementingType.GetFirstLocation();

95diagnostics.Add(ErrorCode.ERR_VarianceInterfaceNesting, member.GetFirstLocation()); 231locationProvider: e => e.GetFirstLocation(), 271locationProvider: t => t.GetFirstLocation(), 469var location = locationProvider(locationArg) ?? unsafeTypeParameter.GetFirstLocation();