Support initialization of incomplete array with zero size (as
extension).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54946 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index 7c48a11..12ca382 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -257,19 +257,18 @@
}
if (DeclType->isIncompleteArrayType()) {
// If this is an incomplete array type, the actual type needs to
- // be calculated here
+ // be calculated here.
if (numElements == 0) {
- // Sizing an array implicitly to zero is not allowed
- // (It could in theory be allowed, but it doesn't really matter.)
+ // Sizing an array implicitly to zero is not allowed by ISO C,
+ // but is supported by GNU.
SemaRef->Diag(IList->getLocStart(),
- diag::err_at_least_one_initializer_needed_to_size_array);
- hadError = true;
- } else {
- llvm::APSInt ConstVal(32);
- ConstVal = numElements;
- DeclType = SemaRef->Context.getConstantArrayType(elementType, ConstVal,
- ArrayType::Normal, 0);
+ diag::ext_typecheck_zero_array_size);
}
+
+ llvm::APSInt ConstVal(32);
+ ConstVal = numElements;
+ DeclType = SemaRef->Context.getConstantArrayType(elementType, ConstVal,
+ ArrayType::Normal, 0);
}
}