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-rw-r--r--clang/lib/Sema/Lookup.h5
-rw-r--r--clang/lib/Sema/Sema.h11
-rw-r--r--clang/lib/Sema/SemaDecl.cpp14
-rw-r--r--clang/lib/Sema/SemaDeclCXX.cpp7
-rw-r--r--clang/lib/Sema/SemaExpr.cpp90
-rw-r--r--clang/lib/Sema/SemaOverload.cpp53
-rw-r--r--clang/lib/Sema/SemaTemplate.cpp17
-rw-r--r--clang/lib/Sema/TreeTransform.h9
-rw-r--r--clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp35
-rw-r--r--clang/test/SemaCXX/member-expr.cpp18
10 files changed, 154 insertions, 105 deletions
diff --git a/clang/lib/Sema/Lookup.h b/clang/lib/Sema/Lookup.h
index 09612995871..271bb5bcd4a 100644
--- a/clang/lib/Sema/Lookup.h
+++ b/clang/lib/Sema/Lookup.h
@@ -424,6 +424,11 @@ public:
Diagnose = false;
}
+ /// Determines whether this lookup is suppressing diagnostics.
+ bool isSuppressingDiagnostics() const {
+ return Diagnose;
+ }
+
/// Sets a 'context' source range.
void setContextRange(SourceRange SR) {
NameContextRange = SR;
diff --git a/clang/lib/Sema/Sema.h b/clang/lib/Sema/Sema.h
index 48b8d05d918..396f144ddf2 100644
--- a/clang/lib/Sema/Sema.h
+++ b/clang/lib/Sema/Sema.h
@@ -1103,10 +1103,12 @@ public:
/// non-function.
Ovl_NonFunction
};
- OverloadKind CheckOverload(FunctionDecl *New,
+ OverloadKind CheckOverload(Scope *S,
+ FunctionDecl *New,
const LookupResult &OldDecls,
- NamedDecl *&OldDecl);
- bool IsOverload(FunctionDecl *New, FunctionDecl *Old);
+ NamedDecl *&OldDecl,
+ bool IsForUsingDecl);
+ bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl);
bool TryImplicitConversion(InitializationSequence &Sequence,
const InitializedEntity &Entity,
@@ -1952,7 +1954,8 @@ public:
OwningExprResult LookupMemberExpr(LookupResult &R, Expr *&Base,
bool &IsArrow, SourceLocation OpLoc,
CXXScopeSpec &SS,
- DeclPtrTy ObjCImpDecl);
+ DeclPtrTy ObjCImpDecl,
+ bool HasTemplateArgs);
bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType,
const CXXScopeSpec &SS,
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 813fc6cd3c2..ddc5ef108a8 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2863,7 +2863,7 @@ static bool FindOverriddenMethod(const CXXBaseSpecifier *Specifier,
// FIXME: Do we care about other names here too?
if (Name.getNameKind() == DeclarationName::CXXDestructorName) {
- // We really want to find the base class constructor here.
+ // We really want to find the base class destructor here.
QualType T = Data->S->Context.getTypeDeclType(BaseRecord);
CanQualType CT = Data->S->Context.getCanonicalType(T);
@@ -2873,8 +2873,9 @@ static bool FindOverriddenMethod(const CXXBaseSpecifier *Specifier,
for (Path.Decls = BaseRecord->lookup(Name);
Path.Decls.first != Path.Decls.second;
++Path.Decls.first) {
- if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(*Path.Decls.first)) {
- if (MD->isVirtual() && !Data->S->IsOverload(Data->Method, MD))
+ NamedDecl *D = (*Path.Decls.first)->getUnderlyingDecl();
+ if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) {
+ if (MD->isVirtual() && !Data->S->IsOverload(Data->Method, MD, false))
return true;
}
}
@@ -3588,13 +3589,10 @@ void Sema::CheckFunctionDeclaration(Scope *S, FunctionDecl *NewFD,
}
}
- switch (CheckOverload(NewFD, Previous, OldDecl)) {
+ switch (CheckOverload(S, NewFD, Previous, OldDecl,
+ /*NewIsUsingDecl*/ false)) {
case Ovl_Match:
Redeclaration = true;
- if (isa<UsingShadowDecl>(OldDecl) && CurContext->isRecord()) {
- HideUsingShadowDecl(S, cast<UsingShadowDecl>(OldDecl));
- Redeclaration = false;
- }
break;
case Ovl_NonFunction:
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index 595a05b6339..43ddf8c06c9 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -3649,7 +3649,7 @@ bool Sema::CheckUsingShadowDecl(UsingDecl *Using, NamedDecl *Orig,
FD = cast<FunctionDecl>(Target);
NamedDecl *OldDecl = 0;
- switch (CheckOverload(FD, Previous, OldDecl)) {
+ switch (CheckOverload(0, FD, Previous, OldDecl, /*IsForUsingDecl*/ true)) {
case Ovl_Overload:
return false;
@@ -3659,11 +3659,6 @@ bool Sema::CheckUsingShadowDecl(UsingDecl *Using, NamedDecl *Orig,
// We found a decl with the exact signature.
case Ovl_Match:
- if (isa<UsingShadowDecl>(OldDecl)) {
- // Silently ignore the possible conflict.
- return false;
- }
-
// If we're in a record, we want to hide the target, so we
// return true (without a diagnostic) to tell the caller not to
// build a shadow decl.
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index deb9e058c05..ae56018b99a 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -677,26 +677,6 @@ static void DecomposeUnqualifiedId(Sema &SemaRef,
}
}
-/// Decompose the given template name into a list of lookup results.
-///
-/// The unqualified ID must name a non-dependent template, which can
-/// be more easily tested by checking whether DecomposeUnqualifiedId
-/// found template arguments.
-static void DecomposeTemplateName(LookupResult &R, const UnqualifiedId &Id) {
- assert(Id.getKind() == UnqualifiedId::IK_TemplateId);
- TemplateName TName =
- Sema::TemplateTy::make(Id.TemplateId->Template).getAsVal<TemplateName>();
-
- if (TemplateDecl *TD = TName.getAsTemplateDecl())
- R.addDecl(TD);
- else if (OverloadedTemplateStorage *OT = TName.getAsOverloadedTemplate())
- for (OverloadedTemplateStorage::iterator I = OT->begin(), E = OT->end();
- I != E; ++I)
- R.addDecl(*I);
-
- R.resolveKind();
-}
-
/// Determines whether the given record is "fully-formed" at the given
/// location, i.e. whether a qualified lookup into it is assured of
/// getting consistent results already.
@@ -2580,13 +2560,23 @@ bool Sema::CheckQualifiedMemberReference(Expr *BaseExpr,
static bool
LookupMemberExprInRecord(Sema &SemaRef, LookupResult &R,
SourceRange BaseRange, const RecordType *RTy,
- SourceLocation OpLoc, CXXScopeSpec &SS) {
+ SourceLocation OpLoc, CXXScopeSpec &SS,
+ bool HasTemplateArgs) {
RecordDecl *RDecl = RTy->getDecl();
if (SemaRef.RequireCompleteType(OpLoc, QualType(RTy, 0),
SemaRef.PDiag(diag::err_typecheck_incomplete_tag)
<< BaseRange))
return true;
+ if (HasTemplateArgs) {
+ // LookupTemplateName doesn't expect these both to exist simultaneously.
+ QualType ObjectType = SS.isSet() ? QualType() : QualType(RTy, 0);
+
+ bool MOUS;
+ SemaRef.LookupTemplateName(R, 0, SS, ObjectType, false, MOUS);
+ return false;
+ }
+
DeclContext *DC = RDecl;
if (SS.isSet()) {
// If the member name was a qualified-id, look into the
@@ -2660,14 +2650,14 @@ Sema::BuildMemberReferenceExpr(ExprArg BaseArg, QualType BaseType,
if (IsArrow) RecordTy = RecordTy->getAs<PointerType>()->getPointeeType();
if (LookupMemberExprInRecord(*this, R, SourceRange(),
RecordTy->getAs<RecordType>(),
- OpLoc, SS))
+ OpLoc, SS, TemplateArgs != 0))
return ExprError();
// Explicit member accesses.
} else {
OwningExprResult Result =
LookupMemberExpr(R, Base, IsArrow, OpLoc,
- SS, /*ObjCImpDecl*/ DeclPtrTy());
+ SS, /*ObjCImpDecl*/ DeclPtrTy(), TemplateArgs != 0);
if (Result.isInvalid()) {
Owned(Base);
@@ -2880,7 +2870,7 @@ Sema::OwningExprResult
Sema::LookupMemberExpr(LookupResult &R, Expr *&BaseExpr,
bool &IsArrow, SourceLocation OpLoc,
CXXScopeSpec &SS,
- DeclPtrTy ObjCImpDecl) {
+ DeclPtrTy ObjCImpDecl, bool HasTemplateArgs) {
assert(BaseExpr && "no base expression");
// Perform default conversions.
@@ -3057,7 +3047,7 @@ Sema::LookupMemberExpr(LookupResult &R, Expr *&BaseExpr,
// Handle field access to simple records.
if (const RecordType *RTy = BaseType->getAs<RecordType>()) {
if (LookupMemberExprInRecord(*this, R, BaseExpr->getSourceRange(),
- RTy, OpLoc, SS))
+ RTy, OpLoc, SS, HasTemplateArgs))
return ExprError();
return Owned((Expr*) 0);
}
@@ -3259,44 +3249,24 @@ Sema::OwningExprResult Sema::ActOnMemberAccessExpr(Scope *S, ExprArg BaseArg,
TemplateArgs);
} else {
LookupResult R(*this, Name, NameLoc, LookupMemberName);
- if (TemplateArgs) {
- // Re-use the lookup done for the template name.
- DecomposeTemplateName(R, Id);
-
- // Re-derive the naming class.
- if (SS.isSet()) {
- NestedNameSpecifier *Qualifier
- = static_cast<NestedNameSpecifier *>(SS.getScopeRep());
- if (const Type *Ty = Qualifier->getAsType())
- if (CXXRecordDecl *NamingClass = Ty->getAsCXXRecordDecl())
- R.setNamingClass(NamingClass);
- } else {
- QualType BaseType = Base->getType();
- if (const PointerType *Ptr = BaseType->getAs<PointerType>())
- BaseType = Ptr->getPointeeType();
- if (CXXRecordDecl *NamingClass = BaseType->getAsCXXRecordDecl())
- R.setNamingClass(NamingClass);
- }
- } else {
- Result = LookupMemberExpr(R, Base, IsArrow, OpLoc,
- SS, ObjCImpDecl);
+ Result = LookupMemberExpr(R, Base, IsArrow, OpLoc,
+ SS, ObjCImpDecl, TemplateArgs != 0);
- if (Result.isInvalid()) {
- Owned(Base);
- return ExprError();
- }
+ if (Result.isInvalid()) {
+ Owned(Base);
+ return ExprError();
+ }
- if (Result.get()) {
- // The only way a reference to a destructor can be used is to
- // immediately call it, which falls into this case. If the
- // next token is not a '(', produce a diagnostic and build the
- // call now.
- if (!HasTrailingLParen &&
- Id.getKind() == UnqualifiedId::IK_DestructorName)
- return DiagnoseDtorReference(NameLoc, move(Result));
+ if (Result.get()) {
+ // The only way a reference to a destructor can be used is to
+ // immediately call it, which falls into this case. If the
+ // next token is not a '(', produce a diagnostic and build the
+ // call now.
+ if (!HasTrailingLParen &&
+ Id.getKind() == UnqualifiedId::IK_DestructorName)
+ return DiagnoseDtorReference(NameLoc, move(Result));
- return move(Result);
- }
+ return move(Result);
}
Result = BuildMemberReferenceExpr(ExprArg(*this, Base), Base->getType(),
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 24fdff37572..4baa307890e 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -500,19 +500,54 @@ void OverloadCandidateSet::clear() {
// identical (return types of functions are not part of the
// signature), IsOverload returns false and MatchedDecl will be set to
// point to the FunctionDecl for #2.
+//
+// 'NewIsUsingShadowDecl' indicates that 'New' is being introduced
+// into a class by a using declaration. The rules for whether to hide
+// shadow declarations ignore some properties which otherwise figure
+// into a function template's signature.
Sema::OverloadKind
-Sema::CheckOverload(FunctionDecl *New, const LookupResult &Old,
- NamedDecl *&Match) {
+Sema::CheckOverload(Scope *S, FunctionDecl *New, const LookupResult &Old,
+ NamedDecl *&Match, bool NewIsUsingDecl) {
for (LookupResult::iterator I = Old.begin(), E = Old.end();
I != E; ++I) {
- NamedDecl *OldD = (*I)->getUnderlyingDecl();
+ NamedDecl *OldD = *I;
+
+ bool OldIsUsingDecl = false;
+ if (isa<UsingShadowDecl>(OldD)) {
+ OldIsUsingDecl = true;
+
+ // We can always introduce two using declarations into the same
+ // context, even if they have identical signatures.
+ if (NewIsUsingDecl) continue;
+
+ OldD = cast<UsingShadowDecl>(OldD)->getTargetDecl();
+ }
+
+ // If either declaration was introduced by a using declaration,
+ // we'll need to use slightly different rules for matching.
+ // Essentially, these rules are the normal rules, except that
+ // function templates hide function templates with different
+ // return types or template parameter lists.
+ bool UseMemberUsingDeclRules =
+ (OldIsUsingDecl || NewIsUsingDecl) && CurContext->isRecord();
+
if (FunctionTemplateDecl *OldT = dyn_cast<FunctionTemplateDecl>(OldD)) {
- if (!IsOverload(New, OldT->getTemplatedDecl())) {
+ if (!IsOverload(New, OldT->getTemplatedDecl(), UseMemberUsingDeclRules)) {
+ if (UseMemberUsingDeclRules && OldIsUsingDecl) {
+ HideUsingShadowDecl(S, cast<UsingShadowDecl>(*I));
+ continue;
+ }
+
Match = *I;
return Ovl_Match;
}
} else if (FunctionDecl *OldF = dyn_cast<FunctionDecl>(OldD)) {
- if (!IsOverload(New, OldF)) {
+ if (!IsOverload(New, OldF, UseMemberUsingDeclRules)) {
+ if (UseMemberUsingDeclRules && OldIsUsingDecl) {
+ HideUsingShadowDecl(S, cast<UsingShadowDecl>(*I));
+ continue;
+ }
+
Match = *I;
return Ovl_Match;
}
@@ -536,7 +571,8 @@ Sema::CheckOverload(FunctionDecl *New, const LookupResult &Old,
return Ovl_Overload;
}
-bool Sema::IsOverload(FunctionDecl *New, FunctionDecl *Old) {
+bool Sema::IsOverload(FunctionDecl *New, FunctionDecl *Old,
+ bool UseUsingDeclRules) {
FunctionTemplateDecl *OldTemplate = Old->getDescribedFunctionTemplate();
FunctionTemplateDecl *NewTemplate = New->getDescribedFunctionTemplate();
@@ -581,7 +617,10 @@ bool Sema::IsOverload(FunctionDecl *New, FunctionDecl *Old) {
//
// We check the return type and template parameter lists for function
// templates first; the remaining checks follow.
- if (NewTemplate &&
+ //
+ // However, we don't consider either of these when deciding whether
+ // a member introduced by a shadow declaration is hidden.
+ if (!UseUsingDeclRules && NewTemplate &&
(!TemplateParameterListsAreEqual(NewTemplate->getTemplateParameters(),
OldTemplate->getTemplateParameters(),
false, TPL_TemplateMatch) ||
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index a2d4de5b1f7..f5f4853fb0f 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -27,12 +27,12 @@ using namespace clang;
/// \brief Determine whether the declaration found is acceptable as the name
/// of a template and, if so, return that template declaration. Otherwise,
/// returns NULL.
-static NamedDecl *isAcceptableTemplateName(ASTContext &Context, NamedDecl *D) {
- if (!D)
- return 0;
+static NamedDecl *isAcceptableTemplateName(ASTContext &Context,
+ NamedDecl *Orig) {
+ NamedDecl *D = Orig->getUnderlyingDecl();
if (isa<TemplateDecl>(D))
- return D;
+ return Orig;
if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(D)) {
// C++ [temp.local]p1:
@@ -68,7 +68,7 @@ static void FilterAcceptableTemplateNames(ASTContext &C, LookupResult &R) {
LookupResult::Filter filter = R.makeFilter();
while (filter.hasNext()) {
NamedDecl *Orig = filter.next();
- NamedDecl *Repl = isAcceptableTemplateName(C, Orig->getUnderlyingDecl());
+ NamedDecl *Repl = isAcceptableTemplateName(C, Orig);
if (!Repl)
filter.erase();
else if (Repl != Orig) {
@@ -260,7 +260,7 @@ void Sema::LookupTemplateName(LookupResult &Found,
if (DeclarationName Corrected = CorrectTypo(Found, S, &SS, LookupCtx,
false, CTC_CXXCasts)) {
FilterAcceptableTemplateNames(Context, Found);
- if (!Found.empty() && isa<TemplateDecl>(*Found.begin())) {
+ if (!Found.empty()) {
if (LookupCtx)
Diag(Found.getNameLoc(), diag::err_no_member_template_suggest)
<< Name << LookupCtx << Found.getLookupName() << SS.getRange()
@@ -274,8 +274,7 @@ void Sema::LookupTemplateName(LookupResult &Found,
if (TemplateDecl *Template = Found.getAsSingle<TemplateDecl>())
Diag(Template->getLocation(), diag::note_previous_decl)
<< Template->getDeclName();
- } else
- Found.clear();
+ }
} else {
Found.clear();
}
@@ -303,7 +302,7 @@ void Sema::LookupTemplateName(LookupResult &Found,
// - if the name is found in the context of the entire
// postfix-expression and does not name a class template, the name
// found in the class of the object expression is used, otherwise
- } else {
+ } else if (!Found.isSuppressingDiagnostics()) {
// - if the name found is a class template, it must refer to the same
// entity as the one found in the class of the object expression,
// otherwise the program is ill-formed.
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 100ddcb141c..df01be01f11 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -1826,7 +1826,8 @@ public:
Sema::LookupMemberName);
OwningExprResult Result = getSema().LookupMemberExpr(R, Base, IsArrow,
/*FIME:*/IvarLoc,
- SS, DeclPtrTy());
+ SS, DeclPtrTy(),
+ false);
if (Result.isInvalid())
return getSema().ExprError();
@@ -1855,7 +1856,8 @@ public:
bool IsArrow = false;
OwningExprResult Result = getSema().LookupMemberExpr(R, Base, IsArrow,
/*FIME:*/PropertyLoc,
- SS, DeclPtrTy());
+ SS, DeclPtrTy(),
+ false);
if (Result.isInvalid())
return getSema().ExprError();
@@ -1903,7 +1905,8 @@ public:
Sema::LookupMemberName);
OwningExprResult Result = getSema().LookupMemberExpr(R, Base, IsArrow,
/*FIME:*/IsaLoc,
- SS, DeclPtrTy());
+ SS, DeclPtrTy(),
+ false);
if (Result.isInvalid())
return getSema().ExprError();
diff --git a/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
index 25371c7029b..cc28bf6c28c 100644
--- a/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
+++ b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
@@ -111,34 +111,53 @@ namespace test3 {
struct Derived1 : Base {
using Base::foo;
- template <int n> Opaque<2> foo() { return Opaque<2>(); }
+ template <int n> Opaque<2> foo() { return Opaque<2>(); } // expected-note {{invalid explicitly-specified argument for template parameter 'n'}}
};
struct Derived2 : Base {
- template <int n> Opaque<2> foo() { return Opaque<2>(); }
+ template <int n> Opaque<2> foo() { return Opaque<2>(); } // expected-note {{invalid explicitly-specified argument for template parameter 'n'}}
using Base::foo;
};
struct Derived3 : Base {
using Base::foo;
- template <class T> Opaque<3> foo() { return Opaque<3>(); }
+ template <class T> Opaque<3> foo() { return Opaque<3>(); } // expected-note {{invalid explicitly-specified argument for template parameter 'T'}}
};
struct Derived4 : Base {
- template <class T> Opaque<3> foo() { return Opaque<3>(); }
+ template <class T> Opaque<3> foo() { return Opaque<3>(); } // expected-note {{invalid explicitly-specified argument for template parameter 'T'}}
using Base::foo;
};
void test() {
expect<0>(Base().foo<int>());
expect<1>(Base().foo<0>());
- expect<0>(Derived1().foo<int>());
+ expect<0>(Derived1().foo<int>()); // expected-error {{no matching member function for call to 'foo'}}
expect<2>(Derived1().foo<0>());
- expect<0>(Derived2().foo<int>());
+ expect<0>(Derived2().foo<int>()); // expected-error {{no matching member function for call to 'foo'}}
expect<2>(Derived2().foo<0>());
expect<3>(Derived3().foo<int>());
- expect<1>(Derived3().foo<0>());
+ expect<1>(Derived3().foo<0>()); // expected-error {{no matching member function for call to 'foo'}}
expect<3>(Derived4().foo<int>());
- expect<1>(Derived4().foo<0>());
+ expect<1>(Derived4().foo<0>()); // expected-error {{no matching member function for call to 'foo'}}
+ }
+}
+
+// PR7384: access control for member templates.
+namespace test4 {
+ class Base {
+ protected:
+ template<typename T> void foo(T);
+ template<typename T> void bar(T); // expected-note {{declared protected here}}
+ };
+
+ struct Derived : Base {
+ using Base::foo;
+ };
+
+ void test() {
+ Derived d;
+ d.foo<int>(3);
+ d.bar<int>(3); // expected-error {{'bar' is a protected member}}
}
}
diff --git a/clang/test/SemaCXX/member-expr.cpp b/clang/test/SemaCXX/member-expr.cpp
index 54a95936bed..e83fdbf0870 100644
--- a/clang/test/SemaCXX/member-expr.cpp
+++ b/clang/test/SemaCXX/member-expr.cpp
@@ -72,3 +72,21 @@ namespace test4 {
y.f(17);
}
}
+
+namespace test5 {
+ struct A {
+ template <class T> void foo();
+ };
+
+ void test0(int x) {
+ x.A::foo<int>(); // expected-error {{'int' is not a structure or union}}
+ }
+
+ void test1(A *x) {
+ x.A::foo<int>(); // expected-error {{'test5::A *' is a pointer}}
+ }
+
+ void test2(A &x) {
+ x->A::foo<int>(); // expected-error {{'test5::A' is not a pointer}}
+ }
+}
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