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-rw-r--r--lib/AST/ASTContext.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index b230edb93d..00eaa361a3 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1063,6 +1063,9 @@ QualType ASTContext::getConstantArrayType(QualType EltTy,
const llvm::APInt &ArySizeIn,
ArrayType::ArraySizeModifier ASM,
unsigned EltTypeQuals) {
+ assert((EltTy->isDependentType() || EltTy->isConstantSizeType()) &&
+ "Constant array of VLAs is illegal!");
+
// Convert the array size into a canonical width matching the pointer size for
// the target.
llvm::APInt ArySize(ArySizeIn);