Add TypeLocBuilder, an API for incrementally creating TypeLocs. Change
the API for creating DeclaratorInfos to allow callers to provide an exact
size.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84715 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 98aef39..8855cba 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -943,8 +943,14 @@
/// \param T the type that will be the basis for type source info. This type
/// should refer to how the declarator was written in source code, not to
/// what type semantic analysis resolved the declarator to.
-DeclaratorInfo *ASTContext::CreateDeclaratorInfo(QualType T) {
- unsigned DataSize = TypeLoc::getFullDataSizeForType(T);
+DeclaratorInfo *ASTContext::CreateDeclaratorInfo(QualType T,
+ unsigned DataSize) {
+ if (!DataSize)
+ DataSize = TypeLoc::getFullDataSizeForType(T);
+ else
+ assert(DataSize == TypeLoc::getFullDataSizeForType(T) &&
+ "incorrect data size provided to CreateDeclaratorInfo!");
+
DeclaratorInfo *DInfo =
(DeclaratorInfo*)BumpAlloc.Allocate(sizeof(DeclaratorInfo) + DataSize, 8);
new (DInfo) DeclaratorInfo(T);