1 files changed, 4 insertions, 0 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 479f80f1dd..468baae205 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -1422,6 +1422,10 @@ bool VarDecl::evaluateValue(
 }
 
 bool VarDecl::checkInitIsICE() const {
+  // Initializers of weak variables are never ICEs.
+  if (isWeak())
+    return false;
+
   EvaluatedStmt *Eval = ensureEvaluatedStmt();
   if (Eval->CheckedICE)
     // We have already checked whether this subexpression is an