3063Error(diagnostics, ErrorCode.WRN_OptionalParamValueMismatch, lambdaParameter.GetFirstLocation(), p + 1, lambdaParamDefault, delegateParamDefault ?? ((object)MessageID.IDS_Missing.Localize())); 3070Error(diagnostics, ErrorCode.WRN_ParamsArrayInLambdaOnly, lambdaParameter.GetFirstLocation(), p + 1);

4976diagnostics.Add(ErrorCode.ERR_ObjectCallingBaseConstructor, constructor.GetFirstLocation(), containingType); 4987diagnostics.Add(ErrorCode.ERR_StructWithBaseConstructorCall, constructor.GetFirstLocation(), containingType); 5022errorLocation = constructor.GetFirstLocation();

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

778CheckFeatureAvailability(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);

1976Location la = snd.GetFirstLocation(); 1977Location lb = fst.GetFirstLocation(); 2062arg0 = srcSymbol.GetFirstLocation().SourceTree.FilePath; 2216arg0 = 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);

2034diagnostics.Add(ErrorCode.ERR_MainClassNotClass, mainTypeOrNamespace.GetFirstLocation(), mainTypeOrNamespace); 2055diagnostics.Add(ErrorCode.WRN_MainIgnored, main.GetFirstLocation(), main); 2083noMainFoundDiagnostics.Add(ErrorCode.WRN_InvalidMainSig, candidate.GetFirstLocation(), candidate); 2091noMainFoundDiagnostics.Add(ErrorCode.WRN_MainCantBeGeneric, candidate.GetFirstLocation(), candidate); 2114diagnostics.Add(ErrorCode.ERR_NonTaskMainCantBeAsync, candidate.GetFirstLocation()); 2141var taskLocations = taskCandidates.SelectAsArray(s => s.GetFirstLocation()); 2151diagnostics.Add(new CSDiagnostic(info, candidate.GetFirstLocation())); 2193diagnostics.Add(ErrorCode.ERR_NoMainInClass, mainType.GetFirstLocation(), mainType); 2204diagnostics.Add(ErrorCode.ERR_EntryPointCannotBeUnmanagedCallersOnly, viableEntryPoint.GetFirstLocation()); 2215additionalLocations: viableEntryPoints.Select(m => m.GetFirstLocation()).OfType<Location>().AsImmutable()); 2217diagnostics.Add(new CSDiagnostic(info, viableEntryPoints.First().GetFirstLocation())); 3822var location = symbol.GetFirstLocation();

1834var loc = partial.GetFirstLocation(); 1958if (alias.Alias.GetFirstLocation().SourceSpan == declarationSyntax.Alias.Name.Span) 1991if (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();

1744diagnosticsForThisMethod.Add(ErrorCode.ERR_TooManyLocals, method.GetFirstLocation());

686diagnostics.Add(ErrorCode.ERR_TypeReserved, userDefinedAttribute.GetFirstLocation(), description.FullName);

504location = method.GetFirstLocation();

142Diagnostics.Add(ErrorCode.WRN_UnreferencedLabel, label.GetFirstLocation()); 348var targetStart = node.Label.GetFirstLocation().SourceSpan.Start; 352var usingStart = usingDecl.symbol.GetFirstLocation().SourceSpan.Start;

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

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

105: method.GetFirstLocation();

66method.GetFirstLocation());

633_diagnostics.Add(ErrorCode.ERR_ExpressionTreeCantContainRefStruct, p.GetFirstLocation(), p.Type.Name); 638_diagnostics.Add(ErrorCode.ERR_LambdaWithAttributesToExpressionTree, p.GetFirstLocation());

242target.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)), 119diagnostics.Add(ErrorCode.ERR_ReceiverParameterSameNameAsTypeParameter, parameter.GetFirstLocation(), name);

192var memberLocation = implementingMember.GetFirstLocation(); 394var memberLocation = implementingMember.GetFirstLocation(); 406diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportStaticAbstractMembersInInterfaces, implementingMember.GetFirstLocation()); 447diagnostics.Add(ErrorCode.ERR_ExplicitImplCollisionOnRefOut, explicitInterfaceType.GetFirstLocation(), explicitInterfaceType, implementedMember); 452diagnostics.Add(ErrorCode.WRN_ExplicitImplCollision, implementingMember.GetFirstLocation(), implementingMember); 464diagnostics.Add(ErrorCode.WRN_ExplicitImplCollision, implementingMember.GetFirstLocation(), implementingMember);

477diagnostics.Add(ErrorCode.ERR_ExtensionBlockCollision, extension.GetFirstLocation());

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

255_ => GetFirstLocation()

84_declarationDiagnostics.Add(ErrorCode.ERR_BadExtensionAgg, GetFirstLocation());

579diagnostics.Add(ErrorCode.ERR_UnderspecifiedExtension, extensionMember.GetFirstLocation(), typeParameter);

1463diagnostics.Add(ErrorCode.ERR_OutAttrOnRefParam, this.GetFirstLocation()); 1470diagnostics.Add(ErrorCode.ERR_InAttrOnOutParam, this.GetFirstLocation()); 1477diagnostics.Add(ErrorCode.ERR_OutAttrOnInParam, this.GetFirstLocation()); 1484diagnostics.Add(ErrorCode.ERR_OutAttrOnRefReadonlyParam, this.GetFirstLocation());

308diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 313diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 320diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 325diagnostics.Add(ErrorCode.ERR_PartialMemberSafeDifference, implementation.GetFirstLocation()); 330diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 336diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 348diagnostics.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());

106diagnostics.Add(ErrorCode.ERR_BadVisDelegateReturn, delegateType.GetFirstLocation(), delegateType, invoke.ReturnType); 112diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, delegateType.GetFirstLocation(), invoke.ReturnType, delegateType); 121diagnostics.Add(ErrorCode.ERR_BadVisDelegateParam, delegateType.GetFirstLocation(), delegateType, parameterSymbol.Type); 125diagnostics.Add(ErrorCode.ERR_FileTypeDisallowedInSignature, delegateType.GetFirstLocation(), parameterSymbol.Type, delegateType); 129diagnostics.Add(delegateType.GetFirstLocation(), useSiteInfo);

223diagnostics.Add(ErrorCode.ERR_EnumeratorOverflow, this.GetFirstLocation(), this);

206return this.GetFirstLocation();

622Location location = this.GetFirstLocation(); 867var location = this.GetFirstLocation(); 914diagnostics.Add(ErrorCode.ERR_ExplicitPropertyAddingAccessor, thisAccessor.GetFirstLocation(), thisAccessor, explicitlyImplementedEvent); 926diagnostics.Add(ErrorCode.ERR_PartialMemberTypeDifference, implementation.GetFirstLocation()); 930diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 934diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 941diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 946diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 951diagnostics.Add(ErrorCode.ERR_PartialMemberSafeDifference, implementation.GetFirstLocation()); 957diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 965diagnostics.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()); 117SourceMemberMethodSymbol.ReportLackOfRuntimeSupportForStaticMembersInInterfaces(declaratorSyntax, DeclaredAccessibility, diagnostics, this.GetFirstLocation()); 121diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportDefaultInterfaceImplementation, this.GetFirstLocation()); 127diagnostics.Add(ErrorCode.ERR_EventNeedsBothAccessors, this.GetFirstLocation(), this);

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

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

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(); 581diagnostics.Add(ErrorCode.ERR_CantOverrideSealed, method.GetFirstLocation(), method, overridden); 773var overridingMemberLocation = overridingMember.GetFirstLocation(); 876diagnostics.Add(ErrorCode.WRN_MultipleRuntimeOverrideMatches, ambiguousMethod.GetFirstLocation(), ambiguousMethod, overridingMember); 885var overridingMemberLocation = overridingMember.GetFirstLocation(); 1066if (Binder.ReportUseSite(overriddenMember, diagnostics, overridingMember.GetFirstLocation())) 1074var overridingMemberLocation = overridingProperty.GetFirstLocation(); 1127overridingProperty.GetMethod.GetFirstLocation(), 1137overridingProperty.SetMethod.GetFirstLocation(), 1289diagnostics.Add(ErrorCode.WRN_DoesNotReturnMismatch, overrideMethod.GetFirstLocation(), new FormattedSymbol(overrideMethod, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1629var hidingMemberLocation = hidingMember.GetFirstLocation(); 1750diagnostics.Add(ErrorCode.ERR_HidingAbstractMethod, associatedPropertyOrEvent.GetFirstLocation(), associatedPropertyOrEvent, hiddenMember); 1844diagnostics.Add(ErrorCode.ERR_UnifyingInterfaceInstantiations, this.GetFirstLocation(), this, interface1, interface2);

252diagnostics.Add(ErrorCode.ERR_PartialModifierConflict, GetFirstLocation(), this); 269diagnostics.Add(AccessCheck.GetProtectedMemberInSealedTypeError(ContainingType), GetFirstLocation(), this); 371diagnostics.Add(ErrorCode.ERR_AbstractSealedStatic, GetFirstLocation(), this); 378diagnostics.Add(ErrorCode.ERR_ClosedSealedStatic, GetFirstLocation(), this); 381diagnostics.Add(ErrorCode.ERR_ClosedExplicitlyAbstract, GetFirstLocation(), this); 387diagnostics.Add(ErrorCode.ERR_SealedStaticClass, GetFirstLocation(), this); 393diagnostics.Add(ErrorCode.ERR_UnsafeMeaningless, GetFirstLocation()); 449modifierErrors = ModifierUtils.CheckAccessibility(mods, this, isExplicitInterfaceImplementation: false, diagnostics, this.GetFirstLocation()); 470diagnostics.Add(ErrorCode.ERR_FileTypeNoExplicitAccessibility, GetFirstLocation(), this); 1459diagnostics.Add(ErrorCode.ERR_PartialTypeKindConflict, t.GetFirstLocation(), t); 1463diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, t.GetFirstLocation(), this, t.Name); 1480Binder.CheckFeatureAvailability(t.DeclaringSyntaxReferences[0].GetSyntax(), MessageID.IDS_DefaultInterfaceImplementation, diagnostics, t.GetFirstLocation()); 1529diagnostics.Add(ErrorCode.ERR_MemberNameSameAsType, member.GetFirstLocation(), typeName); 1537diagnostics.Add(ErrorCode.ERR_MemberNameSameAsExtendedType, member.GetFirstLocation(), typeName); 1939var location = GetFirstLocation(); 2091diagnostics.Add(ErrorCode.ERR_InstanceFieldInUnion, field.GetFirstLocation()); 2099diagnostics.Add(ErrorCode.ERR_InstanceCtorWithOneParameterInUnion, ctor.GetFirstLocation()); 2166diagnostics.Add(ErrorCode.ERR_CloneDisallowedInRecord, member.GetFirstLocation()); 2279diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, symbol.GetFirstLocation(), containerForDiagnostics, symbol.Name); 2306diagnostics.Add(ErrorCode.ERR_DuplicateConversionInClass, conversion.GetFirstLocation(), containerForDiagnostics); 2390(d.Location == arg.method1.GetFirstLocation() || d.Location == arg.underlying1.AssociatedSymbol?.TryGetFirstLocation() || 2391d.Location == arg.method2.GetFirstLocation() || d.Location == arg.underlying2.AssociatedSymbol?.TryGetFirstLocation()), 2408diagnostics.Add(ErrorCode.ERR_OverloadRefKind, method1.GetFirstLocation(), containerForDiagnostics, methodKind.Localize(), refKind1.ToParameterDisplayString(), refKind2.ToParameterDisplayString()); 2425diagnostics.Add(ErrorCode.ERR_MemberAlreadyExists, method1.GetFirstLocation(), methodName, containerForDiagnostics); 2484diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, indexer.GetFirstLocation(), containerForDiagnostics, indexerName); 2517diagnostics.Add(ErrorCode.ERR_InconsistentIndexerNames, indexer.GetFirstLocation()); 2530diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, indexer.GetFirstLocation(), containerForDiagnostics, indexerName); 2539diagnostics.Add(ErrorCode.ERR_MemberAlreadyExists, indexer.GetFirstLocation(), SyntaxFacts.GetText(SyntaxKind.ThisKeyword), containerForDiagnostics); 2719diagnostics.Add(ErrorCode.ERR_DuplicateNameInClass, dup.GetFirstLocation(), this, tp.Name); 2833diagnostics.Add(ErrorCode.ERR_StructLayoutCyclePrimaryConstructorParameter, parameterSymbol.GetFirstLocation(), parameterSymbol, type); 2841diagnostics.Add(ErrorCode.ERR_StructLayoutCycle, symbol.GetFirstLocation(), symbol, type); 2872diagnostics.Add(ErrorCode.ERR_ProtectedInStatic, member.GetFirstLocation(), member); 2951diagnostics.Add(ErrorCode.ERR_OperatorNeedsMatch, op1.GetFirstLocation(), op1, 2957diagnostics.Add(ErrorCode.ERR_CheckedOperatorNeedsMatch, op1.GetFirstLocation(), op1); 3055diagnostics.Add(ErrorCode.WRN_EqualsWithoutGetHashCode, this.GetFirstLocation(), this); 3061diagnostics.Add(ErrorCode.WRN_EqualityOpWithoutEquals, this.GetFirstLocation(), this); 3067diagnostics.Add(ErrorCode.WRN_EqualityOpWithoutGetHashCode, this.GetFirstLocation(), this); 3079_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Runtime_CompilerServices_RequiredMemberAttribute__ctor, diagnostics, GetFirstLocation()); 3084_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Runtime_CompilerServices_CompilerFeatureRequiredAttribute__ctor, diagnostics, GetFirstLocation()); 3089_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Diagnostics_CodeAnalysis_SetsRequiredMembersAttribute__ctor, diagnostics, GetFirstLocation()); 3103diagnostics.Add(ErrorCode.ERR_RequiredMembersBaseTypeInvalid, method.GetFirstLocation(), BaseTypeNoUseSiteDiagnostics); 3117diagnostics.Add(ErrorCode.ERR_ScriptsAndSubmissionsCannotHaveRequiredMembers, member.GetFirstLocation()); 3163diagnostics.Add(ErrorCode.ERR_StructLayoutCycle, f.GetFirstLocation(), f, type); 3227diagnostics.Add(ErrorCode.WRN_SequentialOnPartialClass, GetFirstLocation(), this); 3240diagnostics.Add(ErrorCode.WRN_SequentialOnPartialClass, GetFirstLocation(), this); 4240diagnostics.Add(ErrorCode.ERR_PartialMethodMustHaveLatent, method.GetFirstLocation(), method); 4244diagnostics.Add(ErrorCode.ERR_PartialMethodWithAccessibilityModsMustHaveImplementation, method.GetFirstLocation(), method); 4253property.GetFirstLocation(), 4263constructor.GetFirstLocation(), 4273ev.GetFirstLocation(), 4314diagnostics.Add(ErrorCode.ERR_PartialMethodOnlyOneActual, currentMethod.GetFirstLocation()); 4320diagnostics.Add(ErrorCode.ERR_PartialMethodOnlyOneLatent, currentMethod.GetFirstLocation()); 4333diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateImplementation, currentProperty.GetFirstLocation()); 4338diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateDefinition, currentProperty.GetFirstLocation()); 4344diagnostics.Add(ErrorCode.ERR_PartialPropertyDuplicateInitializer, currentProperty.GetFirstLocation()); 4367diagnostics.Add(errorCode, propertyToBlame.GetFirstLocation(), foundAccessor); 4383diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateImplementation, currentConstructor.GetFirstLocation(), currentConstructor); 4389diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateDefinition, currentConstructor.GetFirstLocation(), currentConstructor); 4403diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateImplementation, currentEvent.GetFirstLocation(), currentEvent); 4409diagnostics.Add(ErrorCode.ERR_PartialMemberDuplicateDefinition, currentEvent.GetFirstLocation(), currentEvent); 4637return locationFrom.GetFirstLocation(); 4646return locationFrom.GetFirstLocation(); 4776diagnostics.Add(ErrorCode.ERR_InterfacesCantContainConstructors, member.GetFirstLocation()); 4783diagnostics.Add(ErrorCode.ERR_OnlyClassesCanContainDestructors, member.GetFirstLocation()); 4827MessageID.IDS_FeatureExtensionIndexers.CheckFeatureAvailability(diagnostics, this.DeclaringCompilation, member.GetFirstLocation()); 4831diagnostics.Add(ErrorCode.ERR_ExtensionDisallowsMember, member.GetFirstLocation()); 4895var location = m.GetFirstLocation(); 4931MessageID.IDS_FeatureStructFieldInitializers.CheckFeatureAvailability(diagnostics, symbol.DeclaringCompilation, symbol.GetFirstLocation()); 4937diagnostics.Add(ErrorCode.ERR_StructHasInitializersAndNoDeclaredConstructor, GetFirstLocation()); 5148diagnostics.Add(ErrorCode.WRN_RecordEqualsWithoutGetHashCode, thisEquals.GetFirstLocation(), declaration.Name); 5201diagnostics.Add(ErrorCode.ERR_NonPublicAPIInRecord, deconstruct.GetFirstLocation(), deconstruct); 5206diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, deconstruct.GetFirstLocation(), deconstruct, targetMethod.ReturnType); 5211diagnostics.Add(ErrorCode.ERR_StaticAPIInRecord, deconstruct.GetFirstLocation(), deconstruct); 5246diagnostics.Add(ErrorCode.ERR_RecordAmbigCtor, copyCtor.GetFirstLocation()); 5255diagnostics.Add(ErrorCode.ERR_RecordAmbigCtor, this.GetFirstLocation()); 5259diagnostics.Add(ErrorCode.ERR_CopyConstructorWrongAccessibility, constructor.GetFirstLocation(), constructor); 5304diagnostics.Add(ErrorCode.ERR_NonPrivateAPIInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod); 5309diagnostics.Add(ErrorCode.ERR_NonProtectedAPIInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod); 5316diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, printMembersMethod.GetFirstLocation(), printMembersMethod, targetMethod.ReturnType); 5352var languageVersion = ((CSharpParseOptions)this.GetFirstLocation().SourceTree!.Options).LanguageVersion; 5356this.GetFirstLocation(), 5379toStringMethod.GetFirstLocation()); 5463param.GetFirstLocation(), 5492diagnostics.Add(ErrorCode.ERR_HiddenPositionalMember, param.GetFirstLocation(), symbol); 5532diagnostics.Add(ErrorCode.ERR_SealedAPIInRecord, getHashCode.GetFirstLocation(), getHashCode); 5566diagnostics.Add(ErrorCode.ERR_NonPrivateAPIInRecord, equalityContract.GetFirstLocation(), equalityContract); 5571diagnostics.Add(ErrorCode.ERR_NonProtectedAPIInRecord, equalityContract.GetFirstLocation(), equalityContract); 5578diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, equalityContract.GetFirstLocation(), equalityContract, targetProperty.Type); 5588diagnostics.Add(ErrorCode.ERR_EqualityContractRequiresGetter, equalityContract.GetFirstLocation(), equalityContract); 5632diagnostics.Add(ErrorCode.ERR_NonPublicAPIInRecord, thisEquals.GetFirstLocation(), thisEquals); 5637diagnostics.Add(ErrorCode.ERR_SignatureMismatchInRecord, thisEquals.GetFirstLocation(), thisEquals, targetMethod.ReturnType); 5652diagnostics.Add(ErrorCode.ERR_NotOverridableAPIInRecord, symbol.GetFirstLocation(), symbol); 5656diagnostics.Add(ErrorCode.ERR_StaticAPIInRecord, symbol.GetFirstLocation(), symbol);

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);

1496diagnostics.Add(ErrorCode.ERR_ComImportWithUserCtor, this.GetFirstLocation()); 1505diagnostics.Add(ErrorCode.ERR_ComImportWithImpl, this.GetFirstLocation(), this, ContainingType); 1522diagnostics.Add(errorCode, this.GetFirstLocation(), this); 1531AsyncMethodChecks(verifyReturnType: true, this.GetFirstLocation(), diagnostics);

341var info = diagnostics.Add(ErrorCode.ERR_PartialMultipleBases, GetFirstLocation(), this); 468diagnostics.Add(GetFirstLocation(), useSiteInfo); 740diagnostics.Add(ErrorCode.ERR_CycleInInterfaceInheritance, GetFirstLocation(), this, t))); 764diagnostics.Add(GetFirstLocation(), useSiteInfo); 828diagnostics.Add(ErrorCode.ERR_CircularBase, GetFirstLocation(), declaredBase, this)); 848diagnostics.Add(useSiteInfo.Diagnostics.IsNullOrEmpty() ? Location.None : ((reportAtFirstLocation ? null : FindBaseRefSyntax(declaredBase)) ?? GetFirstLocation()), useSiteInfo);

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

535diagnostics.Add(ErrorCode.ERR_PartialWrongConstraints, GetFirstLocation(), this, typeParameters[i]); 1664diagnostics.Add(ErrorCode.ERR_ComImportWithBase, this.GetFirstLocation(), this.Name); 1889diagnostics.Add(ErrorCode.ERR_ExplicitOrExtendedLayoutFieldRequiresUnsafeOrSafe, field.GetFirstLocation()); 1896_ = Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Runtime_CompilerServices_UnionAttribute__ctor, diagnostics, GetFirstLocation()); 1994diagnostics.Add(ErrorCode.WRN_ObsoleteMembersShouldNotBeRequired, member.GetFirstLocation(), member); 2001Binder.GetWellKnownTypeMember(DeclaringCompilation, WellKnownMember.System_Reflection_DefaultMemberAttribute__ctor, diagnostics, indexerSymbol.TryGetFirstLocation() ?? GetFirstLocation()); 2007diagnostics.Add(ErrorCode.ERR_StructLayoutAndExtendedLayout, GetFirstLocation()); 2014diagnostics.Add(ErrorCode.ERR_InvalidInlineArrayLayout, GetFirstLocation()); 2023diagnostics.Add(ErrorCode.ERR_InlineArrayUnsupportedElementFieldModifier, elementField.TryGetFirstLocation() ?? GetFirstLocation()); 2037diagnostics.Add(ErrorCode.WRN_InlineArrayIndexerNotUsed, indexer.TryGetFirstLocation() ?? GetFirstLocation()); 2045diagnostics.Add(ErrorCode.WRN_InlineArraySliceNotUsed, slice.TryGetFirstLocation() ?? GetFirstLocation()); 2068diagnostics.Add(ErrorCode.WRN_InlineArrayConversionOperatorNotUsed, conversion.TryGetFirstLocation() ?? GetFirstLocation()); 2077diagnostics.Add(ErrorCode.WRN_InlineArrayNotSupportedByLanguage, elementField.TryGetFirstLocation() ?? GetFirstLocation()); 2081diagnostics.Add(ErrorCode.WRN_InlineArrayNotSupportedByLanguage, GetFirstLocation()); 2087diagnostics.Add(ErrorCode.ERR_InvalidInlineArrayFields, GetFirstLocation()); 2092diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportInlineArrayTypes, GetFirstLocation()); 2100diagnostics.Add(ErrorCode.ERR_RuntimeDoesNotSupportExtendedLayoutTypes, GetFirstLocation()); 2129diagnostics.Add(ErrorCode.ERR_EmbeddedAttributeMustFollowPattern, 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); 1012compilation.GetBinder(alias.UsingDirective.NamespaceOrType).ReportDiagnosticsIfUnsafeMemberAccess(diagnostics.DiagnosticBag, alias.Alias.Target, alias.Alias.GetFirstLocation());

237this.ReturnType.CheckAllConstraints(compilation, conversions, this.GetFirstLocation(), diagnostics); 241parameter.Type.CheckAllConstraints(compilation, conversions, parameter.GetFirstLocation(), diagnostics); 277compilation.EnsureExtensionMarkerAttributeExists(diagnostics, GetFirstLocation(), modifyCompilation: true);

514diagnostics.Add(ErrorCode.ERR_PartialMethodReturnTypeDifference, implementation.GetFirstLocation()); 519diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), definition, implementation); 524diagnostics.Add(ErrorCode.ERR_PartialMemberRefReturnDifference, implementation.GetFirstLocation()); 529diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 534diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementation.GetFirstLocation()); 539diagnostics.Add(ErrorCode.ERR_PartialMethodExtensionDifference, implementation.GetFirstLocation()); 544diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 549diagnostics.Add(ErrorCode.ERR_PartialMemberSafeDifference, implementation.GetFirstLocation()); 554diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 560diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 568diagnostics.Add(ErrorCode.ERR_PartialMemberExtendedModDifference, implementation.GetFirstLocation()); 579diagnostics.Add(ErrorCode.ERR_ScopedMismatchInParameterOfPartial, implementingMethod.GetFirstLocation(), new FormattedSymbol(implementingParameter, SymbolDisplayFormat.ShortFormat)); 596diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInReturnTypeOnPartial, implementingMethod.GetFirstLocation()); 600diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInParameterTypeOnPartial, implementingMethod.GetFirstLocation(), new FormattedSymbol(implementingParameter, SymbolDisplayFormat.ShortFormat)); 610diagnostics.Add(ErrorCode.WRN_PartialMethodTypeDifference, implementation.GetFirstLocation(), 649diagnostics.Add(ErrorCode.ERR_PartialMethodInconsistentConstraints, implementation.GetFirstLocation(), implementation, typeParameter2.Name); 653diagnostics.Add(ErrorCode.WRN_NullabilityMismatchInConstraintsOnPartialImplementation, implementation.GetFirstLocation(), implementation, typeParameter2.Name); 730diagnostics.Add(report, typeParameter.GetFirstLocation(), this, typeParameter,

877diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementationAccessor.GetFirstLocation()); 882diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementationAccessor.GetFirstLocation()); 887diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementationAccessor.GetFirstLocation()); 892diagnostics.Add(ErrorCode.ERR_PartialMemberSafeDifference, implementationAccessor.GetFirstLocation()); 898diagnostics.Add(ErrorCode.ERR_PartialPropertyInitMismatch, implementationAccessor.GetFirstLocation(), implementationAccessor, accessorName);

737diagnostics.Add(ErrorCode.ERR_PartialMemberTypeDifference, implementation.GetFirstLocation()); 742diagnostics.Add(ErrorCode.ERR_PartialMemberInconsistentTupleNames, implementation.GetFirstLocation(), this, implementation); 748diagnostics.Add(ErrorCode.ERR_PartialMemberRefReturnDifference, implementation.GetFirstLocation()); 754diagnostics.Add(ErrorCode.WRN_PartialMemberSignatureDifference, implementation.GetFirstLocation(), 761diagnostics.Add(ErrorCode.ERR_PartialPropertyRequiredDifference, implementation.GetFirstLocation()); 766diagnostics.Add(ErrorCode.ERR_PartialMemberStaticDifference, implementation.GetFirstLocation()); 771diagnostics.Add(ErrorCode.ERR_PartialMemberReadOnlyDifference, implementation.GetFirstLocation()); 776diagnostics.Add(ErrorCode.ERR_PartialMemberUnsafeDifference, implementation.GetFirstLocation()); 781diagnostics.Add(ErrorCode.ERR_PartialMemberSafeDifference, implementation.GetFirstLocation()); 786diagnostics.Add(ErrorCode.ERR_PartialMemberParamsDifference, implementation.GetFirstLocation()); 792diagnostics.Add(ErrorCode.ERR_PartialMemberAccessibilityDifference, implementation.GetFirstLocation()); 800diagnostics.Add(ErrorCode.ERR_PartialMemberExtendedModDifference, implementation.GetFirstLocation()); 812diagnostics.Add(ErrorCode.ERR_ScopedMismatchInParameterOfPartial, implementation.GetFirstLocation(), new FormattedSymbol(implementation.Parameters[i], SymbolDisplayFormat.ShortFormat));

355diagnostics.Add(ErrorCode.WRN_AccessorDoesNotUseBackingField, accessorToBlame.GetFirstLocation(), accessorName, property); 962diagnostics.Add(ErrorCode.ERR_RefPropertyCannotHaveSetAccessor, _setMethod.GetFirstLocation()); 1006diagnostics.Add(ErrorCode.ERR_AutoPropertyMustHaveGetAccessor, _setMethod!.GetFirstLocation()); 1080(Syntax?.Modifiers).GetModifierLocation(SyntaxKind.ExternKeyword, GetFirstLocation())); 1086(Syntax?.Modifiers).GetModifierLocation(SyntaxKind.UnsafeKeyword, GetFirstLocation()), 1114compilation.EnsureExtensionMarkerAttributeExists(diagnostics, GetFirstLocation(), modifyCompilation: true); 1203diagnostics.Add(ErrorCode.ERR_InvalidPropertyAccessMod, accessor.GetFirstLocation(), accessor, this); 1225diagnostics.Add(ErrorCode.ERR_PrivateAbstractAccessor, accessor.GetFirstLocation(), accessor); 1248diagnostics.Add(ErrorCode.ERR_ExplicitPropertyAddingAccessor, thisAccessor.GetFirstLocation(), thisAccessor, explicitlyImplementedProperty); 1253diagnostics.Add(ErrorCode.ERR_ExplicitPropertyMismatchInitOnly, thisAccessor.GetFirstLocation(), thisAccessor, otherAccessor); 1858parameter.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);

281symbol.CheckUnsafeModifier(modifiers, symbol.GetFirstLocation(), diagnostics);

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

45containingType.GetFirstLocation(), 65=> ContainingType.GetFirstLocation(); 73ContainingType.GetFirstLocation(), 138diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseEqualityContract, overriding.GetFirstLocation(), overriding, baseType);

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

117diagnostics.Add(ErrorCode.ERR_AbstractBaseRecordImplementation, GetFirstLocation(), this, baseEquals);

90diagnostics.Add(ErrorCode.ERR_AbstractBaseRecordImplementation, GetFirstLocation(), this, overridden);

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); 166diagnostics.Add(ErrorCode.ERR_AbstractBaseRecordImplementation, GetFirstLocation(), this, basePrintMethod); 308diagnostics.Add(ErrorCode.ERR_DoesNotOverrideBaseMethod, overriding.GetFirstLocation(), overriding, baseType);

44backingParameter.GetFirstLocation(),

84this.Parameters[0].Type.CheckAllConstraints(DeclaringCompilation, conversions, GetFirstLocation(), diagnostics);

213_locations.IsEmpty ? null : GetFirstLocation(),

860diagnostics.Add(ErrorCode.ERR_DuplicateExplicitImpl, implementingType.GetFirstLocation(), interfaceMember); 1790implementingEvent.GetFirstLocation(), new FormattedSymbol(implementedEvent, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1829implementingMethod.GetFirstLocation(), new FormattedSymbol(implementedMethod.ConstructedFrom, SymbolDisplayFormat.MinimallyQualifiedFormat)); 1850implementingMethod.GetFirstLocation(), 2167return member.GetFirstLocation(); 2173return 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();