Make sure ptrarith_typesize is at least 1 to avoid division by zero

llvm-svn: 137234

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index d3332f7b560..d1fa1965693 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -3553,6 +3553,7 @@ void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr,
       // Make sure we're comparing apples to apples when comparing index to size
       uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType);
       uint64_t array_typesize = Context.getTypeSize(BaseType);
+      if (!ptrarith_typesize) ptrarith_typesize = 1;
       if (ptrarith_typesize != array_typesize) {
         // There's a cast to a different size type involved
         uint64_t ratio = array_typesize / ptrarith_typesize;