[cfe-dev] Missing edges in analysis call graph

[Daniel DeFreez]

I'm thinking something along the lines of:

+  // If this is a function declaration without a body,
+  // then substitute the declaration that does have a body.
+  // (unchanged if no such definition exists)
+  FunctionDecl *SwapForDefinition(FunctionDecl *FD) {
+    FunctionDecl *Definition = FD;
+    if (! FD->doesThisDeclarationHaveABody())
+      for (auto I : FD->redecls())
+        if (I->doesThisDeclarationHaveABody())
+          Definition = I;
+
+    return Definition;
+  }
+
   void addCalledDecl(Decl *D) {
+    if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
+      D = SwapForDefinition(FD);
+
     if (G->includeInGraph(D)) {
       CallGraphNode *CalleeNode = G->getOrInsertNode(D);
       CallerNode->addCallee(CalleeNode, G);
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