commit 3e268632cf06f34df537d55112de12047c655cc2
author Richard Smith <richard-llvm@metafoo.co.uk> Wed May 23 23:41:38 2018 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Wed May 23 23:41:38 2018 +0000
tree 5b5a4870e6e489d98e04af4ed011982b9224b1d8
parent 4672849ead8b34439f90f3a8a26b74b40237bf2e

Use zeroinitializer for (trailing zero portion of) large array initializers
more reliably.

This re-commits r333044 with a fix for PR37560.

llvm-svn: 333141

clang/lib/Sema/SemaInit.cpp

diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index e64a0d6..dc9e298 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -751,6 +751,9 @@
         ElementEntity.getKind() == InitializedEntity::EK_VectorElement)
       ElementEntity.setElementIndex(Init);
 
+    if (Init >= NumInits && ILE->hasArrayFiller())
+      return;
+
     Expr *InitExpr = (Init < NumInits ? ILE->getInit(Init) : nullptr);
     if (!InitExpr && Init < NumInits && ILE->hasArrayFiller())
       ILE->setInit(Init, ILE->getArrayFiller());