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When computing the decltype of an expression, consider Objective-C 

ivar and property references as member accesses and produce the actual
type of the declaration. Fixes <rdar://problem/12031582>.

llvm-svn: 163858
This commit is contained in:
Douglas Gregor 2012-09-13 23:40:46 +00:00
parent a199e82cb9
commit c7203ba19c
1 changed files with 9 additions and 3 deletions
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12
clang/lib/Sema/SemaType.cpp
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@ -4595,15 +4595,21 @@ static QualType getDecltypeForExpr(Sema &S, Expr *E) {
// member access (5.2.5), decltype(e) is the type of the entity named
// by e. If there is no such entity, or if e names a set of overloaded
// functions, the program is ill-formed;
//
// We apply the same rules for Objective-C ivar and property references.
if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
if (const ValueDecl *VD = dyn_cast<ValueDecl>(DRE->getDecl()))
return VD->getType();
}
if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) {
} else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) {
if (const FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl()))
return FD->getType();
} else if (const ObjCIvarRefExpr *IR = dyn_cast<ObjCIvarRefExpr>(E)) {
return IR->getDecl()->getType();
} else if (const ObjCPropertyRefExpr *PR = dyn_cast<ObjCPropertyRefExpr>(E)) {
if (PR->isExplicitProperty())
return PR->getExplicitProperty()->getType();
}
// C++11 [expr.lambda.prim]p18:
// Every occurrence of decltype((x)) where x is a possibly
// parenthesized id-expression that names an entity of automatic