commit 2fb78a70536274426302415b6fc54a1074788e91
author Ted Kremenek <kremenek@apple.com> Wed Dec 17 21:50:35 2008 +0000
committer Ted Kremenek <kremenek@apple.com> Wed Dec 17 21:50:35 2008 +0000
tree 407892b1717a97914889ecd1f509f92cfbffc10a
parent a769c004a2874504c17ea8afccbc4ad35fc33c9f

CF-retain/release checker:
- Fix regression reported in <rdar://problem/6452745>.  After a null check, null references to resources should not have a retain count.  This regression was caused by removing the call to "GRTransferFuncs::EvalAssume" in BasicConstraintManager.
- Added a test case to test this behavior.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61155 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/BasicConstraintManager.cpp

diff --git a/lib/Analysis/BasicConstraintManager.cpp b/lib/Analysis/BasicConstraintManager.cpp
index 7c303b2..d9d97c6 100644
--- a/lib/Analysis/BasicConstraintManager.cpp
+++ b/lib/Analysis/BasicConstraintManager.cpp
@@ -15,6 +15,7 @@
 #include "clang/Analysis/PathSensitive/ConstraintManager.h"
 #include "clang/Analysis/PathSensitive/GRState.h"
 #include "clang/Analysis/PathSensitive/GRStateTrait.h"
+#include "clang/Analysis/PathSensitive/GRTransferFuncs.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/raw_ostream.h"
 
@@ -115,8 +116,15 @@
 const GRState* BasicConstraintManager::Assume(const GRState* St, Loc Cond,
                                             bool Assumption, bool& isFeasible) {
   St = AssumeAux(St, Cond, Assumption, isFeasible);
-  // TF->EvalAssume(*this, St, Cond, Assumption, isFeasible)
-  return St;
+  
+  if (!isFeasible)
+    return St;
+  
+  // EvalAssume is used to call into the GRTransferFunction object to perform
+  // any checker-specific update of the state based on this assumption being
+  // true or false.
+  return StateMgr.getTransferFuncs().EvalAssume(StateMgr, St, Cond, Assumption,
+                                                isFeasible);
 }
 
 const GRState* BasicConstraintManager::AssumeAux(const GRState* St, Loc Cond,
@@ -173,8 +181,15 @@
 BasicConstraintManager::Assume(const GRState* St, NonLoc Cond, bool Assumption,
                                bool& isFeasible) {
   St = AssumeAux(St, Cond, Assumption, isFeasible);
-  // TF->EvalAssume() does nothing now.
-  return St;
+  
+  if (!isFeasible)
+    return St;
+  
+  // EvalAssume is used to call into the GRTransferFunction object to perform
+  // any checker-specific update of the state based on this assumption being
+  // true or false.
+  return StateMgr.getTransferFuncs().EvalAssume(StateMgr, St, Cond, Assumption,
+                                                  isFeasible);
 }
 
 const GRState*