[cfe-commits] r41549 - /cfe/trunk/AST/CFG.cpp

[Ted Kremenek]

Author: kremenek
Date: Tue Aug 28 13:30:10 2007
New Revision: 41549

URL: http://llvm.org/viewvc/llvm-project?rev=41549&view=rev
Log:
Added support for GCC-style statement expressions in source-level CFGs.

Modified:
    cfe/trunk/AST/CFG.cpp

Modified: cfe/trunk/AST/CFG.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/AST/CFG.cpp?rev=41549&r1=41548&r2=41549&view=diff

==============================================================================
--- cfe/trunk/AST/CFG.cpp (original)
+++ cfe/trunk/AST/CFG.cpp Tue Aug 28 13:30:10 2007
@@ -102,6 +102,7 @@
   CFGBlock* WalkAST(Stmt* S, bool AlwaysAddStmt);
   CFGBlock* WalkAST_VisitChildren(Stmt* S);
   CFGBlock* WalkAST_VisitVarDecl(VarDecl* D);
+  CFGBlock* WalkAST_VisitStmtExpr(StmtExpr* S);
   void FinishBlock(CFGBlock* B);
   
 };
@@ -218,6 +219,9 @@
         return WalkAST_VisitVarDecl(V);
       }
       else return Block;
+      
+    case Stmt::StmtExprClass:
+      return WalkAST_VisitStmtExpr(cast<StmtExpr>(S));
 
     case Stmt::BinaryOperatorClass: {
       BinaryOperator* B = cast<BinaryOperator>(S);
@@ -287,6 +291,13 @@
   return B;
 }
 
+/// WalkAST_VisitStmtExpr - Utility method to handle (nested) statement
+///  expressions (a GCC extension).
+CFGBlock* CFGBuilder::WalkAST_VisitStmtExpr(StmtExpr* S) {
+  Block->appendStmt(S);
+  return VisitCompoundStmt(S->getSubStmt());  
+}
+
 /// VisitStmt - Handle statements with no branching control flow.
 CFGBlock* CFGBuilder::VisitStmt(Stmt* Statement) {
   // We cannot assume that we are in the middle of a basic block, since