This patch add a new ProgramPoint PostCondition to represent the post
position of a branch condition, and a new generateNode method to
BranchNodeBuilder using PostCondition ProgramPoint. This method generate a
new ExplodedNode but not a new block edge.
This patch is preparation for statistical UncheckedRenturn checker.
I'll appreciate it if there are any advice about this patch.
--
Best regards!
Lei Zhang
Index: include/clang/Analysis/ProgramPoint.h
===================================================================
--- include/clang/Analysis/ProgramPoint.h (revision 128522)
+++ include/clang/Analysis/ProgramPoint.h (working copy)
@@ -43,6 +43,7 @@
PostStoreKind,
PostPurgeDeadSymbolsKind,
PostStmtCustomKind,
+ PostConditionKind,
PostLValueKind,
PostInitializerKind,
CallEnterKind,
@@ -221,7 +222,17 @@
}
};
-
+// PostCondition represents the post program point of a branch condition.
+class PostCondition : public PostStmt {
+public:
+ PostCondition(const Stmt* S, const LocationContext *L, const void *tag = 0)
+ : PostStmt(S, PostConditionKind, L, tag) {}
+
+ static bool classof(const ProgramPoint* Location) {
+ return Location->getKind() == PostConditionKind;
+ }
+};
+
class LocationCheck : public StmtPoint {
protected:
LocationCheck(const Stmt *S, const LocationContext *L,
Index: lib/StaticAnalyzer/Core/CoreEngine.cpp
===================================================================
--- lib/StaticAnalyzer/Core/CoreEngine.cpp (revision 128522)
+++ lib/StaticAnalyzer/Core/CoreEngine.cpp (working copy)
@@ -602,6 +602,25 @@
return NULL;
}
+// This function generate a new ExplodedNode but not a new branch(block edge).
+ExplodedNode* BranchNodeBuilder::generateNode(const Stmt* Condition,
+ const GRState* State) {
+ bool IsNew;
+
+ ExplodedNode* Succ
+ = Eng.G->getNode(PostCondition(Condition, Pred->getLocationContext()), State,
+ &IsNew);
+
+ Succ->addPredecessor(Pred, *Eng.G);
+
+ Pred = Succ;
+
+ if (IsNew)
+ return Succ;
+
+ return NULL;
+}
+
ExplodedNode* BranchNodeBuilder::generateNode(const GRState* State,
bool branch) {
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