Revert "[analyzer] Add failing test case demonstrating buggy taint propagation"

This reverts commit 744745a.

I'm reverting this since this patch caused a build breakage.

https://lab.llvm.org/buildbot/#/builders/91/builds/3818

Author: Balazs Benics

clang/lib/StaticAnalyzer/Checkers/GenericTaintChecker.cpp

@@ -32,8 +32,6 @@
 #include <memory>
 #include <utility>
 
-#define DEBUG_TYPE "taint-checker"
-
 using namespace clang;
 using namespace ento;
 using namespace taint;
@@ -693,13 +691,6 @@ void GenericTaintChecker::checkPostCall(const CallEvent &Call,
   if (TaintArgs.isEmpty())
     return;
 
-  LLVM_DEBUG(for (ArgIdxTy I
-                  : TaintArgs) {
-    llvm::dbgs() << "PostCall<";
-    Call.dump(llvm::dbgs());
-    llvm::dbgs() << "> actually wants to taint arg index: " << I << '\n';
-  });
-
   for (ArgIdxTy ArgNum : TaintArgs) {
     // Special handling for the tainted return value.
     if (ArgNum == ReturnValueIndex) {
@@ -777,25 +768,15 @@ void GenericTaintRule::process(const GenericTaintChecker &Checker,
 
   /// Propagate taint where it is necessary.
   ForEachCallArg(
-      [this, &State, WouldEscape, &Call](ArgIdxTy I, const Expr *E, SVal V) {
-        if (PropDstArgs.contains(I)) {
-          LLVM_DEBUG(llvm::dbgs() << "PreCall<"; Call.dump(llvm::dbgs());
-                     llvm::dbgs()
-                     << "> prepares tainting arg index: " << I << '\n';);
+      [this, &State, WouldEscape](ArgIdxTy I, const Expr *E, SVal V) {
+        if (PropDstArgs.contains(I))
           State = State->add<TaintArgsOnPostVisit>(I);
-        }
 
         // TODO: We should traverse all reachable memory regions via the
         // escaping parameter. Instead of doing that we simply mark only the
         // referred memory region as tainted.
-        if (WouldEscape(V, E->getType())) {
-          LLVM_DEBUG(if (!State->contains<TaintArgsOnPostVisit>(I)) {
-            llvm::dbgs() << "PreCall<";
-            Call.dump(llvm::dbgs());
-            llvm::dbgs() << "> prepares tainting arg index: " << I << '\n';
-          });
+        if (WouldEscape(V, E->getType()))
           State = State->add<TaintArgsOnPostVisit>(I);
-        }
       });
 
   C.addTransition(State);