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-rw-r--r--clang/lib/Sema/SemaExpr.cpp12
1 files changed, 9 insertions, 3 deletions
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index aa4b23b15c5..eddf90178bc 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -11214,17 +11214,23 @@ static bool CheckForModifiableLvalue(Expr *E, SourceLocation Loc, Sema &S) {
if (var->isARCPseudoStrong() &&
(!var->getTypeSourceInfo() ||
!var->getTypeSourceInfo()->getType().isConstQualified())) {
- // There are two pseudo-strong cases:
+ // There are three pseudo-strong cases:
// - self
ObjCMethodDecl *method = S.getCurMethodDecl();
- if (method && var == method->getSelfDecl())
+ if (method && var == method->getSelfDecl()) {
DiagID = method->isClassMethod()
? diag::err_typecheck_arc_assign_self_class_method
: diag::err_typecheck_arc_assign_self;
+ // - Objective-C externally_retained attribute.
+ } else if (var->hasAttr<ObjCExternallyRetainedAttr>() ||
+ isa<ParmVarDecl>(var)) {
+ DiagID = diag::err_typecheck_arc_assign_externally_retained;
+
// - fast enumeration variables
- else
+ } else {
DiagID = diag::err_typecheck_arr_assign_enumeration;
+ }
SourceRange Assign;
if (Loc != OrigLoc)
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