[cfe-commits] r102793 - /cfe/trunk/lib/Analysis/CFG.cpp

[Ted Kremenek]

Author: kremenek
Date: Fri Apr 30 17:25:53 2010
New Revision: 102793

URL: http://llvm.org/viewvc/llvm-project?rev=102793&view=rev
Log:
Add null check in CFGBuilder::VisitStmt() to make CFG construction
more resilient to bad code.

Modified:
    cfe/trunk/lib/Analysis/CFG.cpp

Modified: cfe/trunk/lib/Analysis/CFG.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/CFG.cpp?rev=102793&r1=102792&r2=102793&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/CFG.cpp (original)
+++ cfe/trunk/lib/Analysis/CFG.cpp Fri Apr 30 17:25:53 2010
@@ -338,6 +338,10 @@
 ///   DeclStmts (which may contain nested control-flow).
 CFGBlock* CFGBuilder::Visit(Stmt * S, AddStmtChoice asc) {
 tryAgain:
+  if (!S) {
+    badCFG = true;
+    return 0;
+  }
   switch (S->getStmtClass()) {
     default:
       return VisitStmt(S, asc);