Add type checking for tentative definitions at the end of the
translation unit.
Thread the various declarations of variables via
VarDecl::getPreviousDeclaration.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66601 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index eaf69f0..9bc07d5 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -273,6 +273,22 @@
VarDecl::~VarDecl() {
}
+bool VarDecl::isTentativeDefinition(ASTContext &Context) const {
+ if (!isFileVarDecl() || Context.getLangOptions().CPlusPlus)
+ return false;
+
+ return (!getInit() &&
+ (getStorageClass() == None || getStorageClass() == Static));
+}
+
+const Expr *VarDecl::getDefinition(const VarDecl *&Def) {
+ Def = this;
+ while (Def && !Def->getInit())
+ Def = Def->getPreviousDeclaration();
+
+ return Def? Def->getInit() : 0;
+}
+
//===----------------------------------------------------------------------===//
// FunctionDecl Implementation
//===----------------------------------------------------------------------===//