Merge pull request swiftlang#15099 from gottesmm/pr-d8c5e55f0e9ec3eb499410c22fa6d8936aea147e

gottesmm · web-flow · commit 398d6105069c · 2018-03-08T23:22:40.000-08:00
When assigning into memory via builtin assign, be sure that we store …
diff --git a/lib/SILGen/SILGenBuiltin.cpp b/lib/SILGen/SILGenBuiltin.cpp
@@ -268,7 +268,7 @@ static ManagedValue emitBuiltinAssign(SILGenFunction &SGF,
   // Build the value to be assigned, reconstructing tuples if needed.
   auto src = RValue(SGF, args.slice(0, args.size() - 1), assignFormalType);
   
-  std::move(src).assignInto(SGF, loc, addr);
+  std::move(src).ensurePlusOne(SGF, loc).assignInto(SGF, loc, addr);
 
   return ManagedValue::forUnmanaged(SGF.emitEmptyTuple(loc));
 }

Original file line number	Diff line number	Diff line change
`@@ -268,7 +268,7 @@ static ManagedValue emitBuiltinAssign(SILGenFunction &SGF,`
`268`	`268`	`// Build the value to be assigned, reconstructing tuples if needed.`
`269`	`269`	`auto src = RValue(SGF, args.slice(0, args.size() - 1), assignFormalType);`
`270`	`270`
`271`		`- std::move(src).assignInto(SGF, loc, addr);`
	`271`	`+ std::move(src).ensurePlusOne(SGF, loc).assignInto(SGF, loc, addr);`
`272`	`272`
`273`	`273`	`return ManagedValue::forUnmanaged(SGF.emitEmptyTuple(loc));`
`274`	`274`	`}`