From baeaa9ad120f60b1c5b6f1a84286b507dbe2b55d Mon Sep 17 00:00:00 2001
From: Anna Zaks <ganna@apple.com>
Date: Thu, 3 May 2012 02:13:50 +0000
Subject: [analyzer] Add a complexity bound on history tracking.

(Currently, this is only relevant for tainted data.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156050 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/StaticAnalyzer/Core/SymbolManager.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'lib/StaticAnalyzer/Core/SymbolManager.cpp')

diff --git a/lib/StaticAnalyzer/Core/SymbolManager.cpp b/lib/StaticAnalyzer/Core/SymbolManager.cpp
index 5fee9afc08..0bc192d645 100644
--- a/lib/StaticAnalyzer/Core/SymbolManager.cpp
+++ b/lib/StaticAnalyzer/Core/SymbolManager.cpp
@@ -164,6 +164,13 @@ void SymExpr::symbol_iterator::expand() {
   llvm_unreachable("unhandled expansion case");
 }
 
+unsigned SymExpr::computeComplexity() const {
+  unsigned R = 0;
+  for (symbol_iterator I = symbol_begin(), E = symbol_end(); I != E; ++I)
+    R++;
+  return R;
+}
+
 const SymbolRegionValue*
 SymbolManager::getRegionValueSymbol(const TypedValueRegion* R) {
   llvm::FoldingSetNodeID profile;
-- 
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