[analyzer] Refactoring: lib/Checker -> lib/GR and libclangChecker -> libclangGRCore

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122421 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 137 deletions

diff --git a/lib/Checker/VLASizeChecker.cpp b/lib/Checker/VLASizeChecker.cpp
deleted file mode 100644
index 8c4d903c1a..0000000000
--- a/lib/Checker/VLASizeChecker.cpp
+++ /dev/null
@@ -1,137 +0,0 @@
-//=== VLASizeChecker.cpp - Undefined dereference checker --------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This defines VLASizeChecker, a builtin check in GRExprEngine that 
-// performs checks for declaration of VLA of undefined or zero size.
-// In addition, VLASizeChecker is responsible for defining the extent
-// of the MemRegion that represents a VLA.
-//
-//===----------------------------------------------------------------------===//
-
-#include "GRExprEngineInternalChecks.h"
-#include "clang/AST/CharUnits.h"
-#include "clang/GR/BugReporter/BugType.h"
-#include "clang/GR/PathSensitive/CheckerVisitor.h"
-#include "clang/GR/PathSensitive/GRExprEngine.h"
-
-using namespace clang;
-
-namespace {
-class VLASizeChecker : public CheckerVisitor<VLASizeChecker> {
-  BugType *BT_zero;
-  BugType *BT_undef;
-  
-public:
-  VLASizeChecker() : BT_zero(0), BT_undef(0) {}
-  static void *getTag() { static int tag = 0; return &tag; }
-  void PreVisitDeclStmt(CheckerContext &C, const DeclStmt *DS);
-};
-} // end anonymous namespace
-
-void clang::RegisterVLASizeChecker(GRExprEngine &Eng) {
-  Eng.registerCheck(new VLASizeChecker());
-}
-
-void VLASizeChecker::PreVisitDeclStmt(CheckerContext &C, const DeclStmt *DS) {
-  if (!DS->isSingleDecl())
-    return;
-  
-  const VarDecl *VD = dyn_cast<VarDecl>(DS->getSingleDecl());
-  if (!VD)
-    return;
-
-  ASTContext &Ctx = C.getASTContext();
-  const VariableArrayType *VLA = Ctx.getAsVariableArrayType(VD->getType());
-  if (!VLA)
-    return;
-
-  // FIXME: Handle multi-dimensional VLAs.
-  const Expr* SE = VLA->getSizeExpr();
-  const GRState *state = C.getState();
-  SVal sizeV = state->getSVal(SE);
-
-  if (sizeV.isUndef()) {
-    // Generate an error node.
-    ExplodedNode *N = C.generateSink();
-    if (!N)
-      return;
-    
-    if (!BT_undef)
-      BT_undef = new BuiltinBug("Declared variable-length array (VLA) uses a "
-                                "garbage value as its size");
-
-    EnhancedBugReport *report =
-      new EnhancedBugReport(*BT_undef, BT_undef->getName(), N);
-    report->addRange(SE->getSourceRange());
-    report->addVisitorCreator(bugreporter::registerTrackNullOrUndefValue, SE);
-    C.EmitReport(report);
-    return;
-  }
-
-  // See if the size value is known. It can't be undefined because we would have
-  // warned about that already.
-  if (sizeV.isUnknown())
-    return;
-  
-  // Check if the size is zero.
-  DefinedSVal sizeD = cast<DefinedSVal>(sizeV);
-
-  const GRState *stateNotZero, *stateZero;
-  llvm::tie(stateNotZero, stateZero) = state->assume(sizeD);
-
-  if (stateZero && !stateNotZero) {
-    ExplodedNode* N = C.generateSink(stateZero);
-    if (!BT_zero)
-      BT_zero = new BuiltinBug("Declared variable-length array (VLA) has zero "
-                               "size");
-
-    EnhancedBugReport *report =
-      new EnhancedBugReport(*BT_zero, BT_zero->getName(), N);
-    report->addRange(SE->getSourceRange());
-    report->addVisitorCreator(bugreporter::registerTrackNullOrUndefValue, SE);
-    C.EmitReport(report);
-    return;
-  }
- 
-  // From this point on, assume that the size is not zero.
-  state = stateNotZero;
-
-  // VLASizeChecker is responsible for defining the extent of the array being
-  // declared. We do this by multiplying the array length by the element size,
-  // then matching that with the array region's extent symbol.
-
-  // Convert the array length to size_t.
-  SValBuilder &svalBuilder = C.getSValBuilder();
-  QualType SizeTy = Ctx.getSizeType();
-  NonLoc ArrayLength = cast<NonLoc>(svalBuilder.evalCast(sizeD, SizeTy, 
-                                                         SE->getType()));
-
-  // Get the element size.
-  CharUnits EleSize = Ctx.getTypeSizeInChars(VLA->getElementType());
-  SVal EleSizeVal = svalBuilder.makeIntVal(EleSize.getQuantity(), SizeTy);
-
-  // Multiply the array length by the element size.
-  SVal ArraySizeVal = svalBuilder.evalBinOpNN(state, BO_Mul, ArrayLength,
-                                              cast<NonLoc>(EleSizeVal), SizeTy);
-
-  // Finally, assume that the array's extent matches the given size.
-  const LocationContext *LC = C.getPredecessor()->getLocationContext();
-  DefinedOrUnknownSVal Extent =
-    state->getRegion(VD, LC)->getExtent(svalBuilder);
-  DefinedOrUnknownSVal ArraySize = cast<DefinedOrUnknownSVal>(ArraySizeVal);
-  DefinedOrUnknownSVal sizeIsKnown =
-    svalBuilder.evalEQ(state, Extent, ArraySize);
-  state = state->assume(sizeIsKnown, true);
-
-  // Assume should not fail at this point.
-  assert(state);
-
-  // Remember our assumptions!
-  C.addTransition(state);
-}