[PATCH] D31029: [analyzer] Fix logical not for pointers with different bit width

[Daniel Marjamäki via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
danielmarjamaki marked an inline comment as done.
Closed by commit rL305669: [analyzer] Fix logical not for pointers with different bit width (authored by danielmarjamaki).

Changed prior to commit:
  https://reviews.llvm.org/D31029?vs=99114&id=102999#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D31029

Files:
  cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/BasicValueFactory.h
  cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
  cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp


Index: cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp
===================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp
+++ cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineC.cpp
@@ -980,10 +980,9 @@
           //    transfer functions as "0 == E".
           SVal Result;
           if (Optional<Loc> LV = V.getAs<Loc>()) {
-            Loc X = svalBuilder.makeNull();
+            Loc X = svalBuilder.makeNullWithType(Ex->getType());
             Result = evalBinOp(state, BO_EQ, *LV, X, U->getType());
-          }
-          else if (Ex->getType()->isFloatingType()) {
+          } else if (Ex->getType()->isFloatingType()) {
             // FIXME: handle floating point types.
             Result = UnknownVal();
           } else {
Index: cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/BasicValueFactory.h
===================================================================
--- cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/BasicValueFactory.h
+++ cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/BasicValueFactory.h
@@ -180,6 +180,11 @@
     return getValue(X);
   }
 
+  inline const llvm::APSInt& getZeroWithTypeSize(QualType T) {
+    assert(T->isScalarType());
+    return getValue(0, Ctx.getTypeSize(T), true);
+  }
+
   inline const llvm::APSInt& getZeroWithPtrWidth(bool isUnsigned = true) {
     return getValue(0, Ctx.getTypeSize(Ctx.VoidPtrTy), isUnsigned);
   }
Index: cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
===================================================================
--- cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
+++ cfe/trunk/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
@@ -315,6 +315,13 @@
     return nonloc::ConcreteInt(BasicVals.getTruthValue(b));
   }
 
+  /// Create NULL pointer, with proper pointer bit-width for given address
+  /// space.
+  /// \param type pointer type.
+  Loc makeNullWithType(QualType type) {
+    return loc::ConcreteInt(BasicVals.getZeroWithTypeSize(type));
+  }
+
   Loc makeNull() {
     return loc::ConcreteInt(BasicVals.getZeroWithPtrWidth());
   }


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