Under ARC, merge the bit corresponding to the ns_returns_retained
attribute from the first declaration to later declarations. Fixes
<rdar://problem/10142572>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141957 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index ecc81cc..71b3c52 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -1752,6 +1752,18 @@
RequiresAdjustment = true;
}
+ // Merge ns_returns_retained attribute.
+ if (OldTypeInfo.getProducesResult() != NewTypeInfo.getProducesResult()) {
+ if (NewTypeInfo.getProducesResult()) {
+ Diag(New->getLocation(), diag::err_returns_retained_mismatch);
+ Diag(Old->getLocation(), diag::note_previous_declaration);
+ return true;
+ }
+
+ NewTypeInfo = NewTypeInfo.withProducesResult(true);
+ RequiresAdjustment = true;
+ }
+
if (RequiresAdjustment) {
NewType = Context.adjustFunctionType(NewType, NewTypeInfo);
New->setType(QualType(NewType, 0));