From 93b2bdb866d49e3dab4623a822db281042e87382 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Sun, 1 Mar 2009 04:28:32 +0000
Subject: [PATCH] ObjCAtCatchStmt's ParamStmt is always a DeclStmt.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65759 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/AST/Stmt.h  | 10 +++++++---
 lib/AST/Stmt.cpp          |  3 ++-
 lib/CodeGen/CGObjCMac.cpp |  3 +--
 lib/Sema/SemaStmt.cpp     |  2 +-
 4 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h
index 696aa00ed7..c4c2291f2c 100644
--- a/include/clang/AST/Stmt.h
+++ b/include/clang/AST/Stmt.h
@@ -1066,7 +1066,8 @@ private:
 
 public:
   ObjCAtCatchStmt(SourceLocation atCatchLoc, SourceLocation rparenloc,
-                  Stmt *catchVarStmtDecl, Stmt *atCatchStmt, Stmt *atCatchList);
+                  DeclStmt *catchVarStmtDecl, 
+                  Stmt *atCatchStmt, Stmt *atCatchList);
   
   const Stmt *getCatchBody() const { return SubExprs[BODY]; }
   Stmt *getCatchBody() { return SubExprs[BODY]; }
@@ -1078,8 +1079,11 @@ public:
     return static_cast<ObjCAtCatchStmt*>(SubExprs[NEXT_CATCH]);
   }
 
-  const Stmt *getCatchParamStmt() const { return SubExprs[SELECTOR]; }
-  Stmt *getCatchParamStmt() { return SubExprs[SELECTOR]; }
+  const DeclStmt *getCatchParamStmt() const { 
+    return static_cast<const DeclStmt*>(SubExprs[SELECTOR]); }
+  DeclStmt *getCatchParamStmt() { 
+    return static_cast<DeclStmt*>(SubExprs[SELECTOR]); 
+  }
   
   SourceLocation getRParenLoc() const { return RParenLoc; }
   
diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index b85a67e689..e987d84c23 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -180,12 +180,13 @@ ObjCForCollectionStmt::ObjCForCollectionStmt(Stmt *Elem, Expr *Collect,
 
 ObjCAtCatchStmt::ObjCAtCatchStmt(SourceLocation atCatchLoc,
                                  SourceLocation rparenloc,
-                                 Stmt *catchVarStmtDecl, Stmt *atCatchStmt,
+                                 DeclStmt *catchVarStmtDecl, Stmt *atCatchStmt,
                                  Stmt *atCatchList)
 : Stmt(ObjCAtCatchStmtClass) {
   SubExprs[SELECTOR] = catchVarStmtDecl;
   SubExprs[BODY] = atCatchStmt;
   SubExprs[NEXT_CATCH] = NULL;
+  // FIXME: O(N^2) in number of catch blocks.
   if (atCatchList) {
     ObjCAtCatchStmt *AtCatchList = static_cast<ObjCAtCatchStmt*>(atCatchList);
 
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 549a6b9f52..26a11c90be 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -1999,8 +1999,7 @@ void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
     for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) {
       llvm::BasicBlock *NextCatchBlock = CGF.createBasicBlock("catch");
 
-      const DeclStmt *CatchParam = 
-        cast_or_null<DeclStmt>(CatchStmt->getCatchParamStmt());
+      const DeclStmt *CatchParam = CatchStmt->getCatchParamStmt();
       const VarDecl *VD = 0;
       const PointerType *PT = 0;
 
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index dfcb65a353..39b211f64b 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -964,7 +964,7 @@ Sema::ActOnObjCAtCatchStmt(SourceLocation AtLoc,
                            StmtArg Body, StmtArg catchList) {
   Stmt *CatchList = static_cast<Stmt*>(catchList.release());
   ObjCAtCatchStmt *CS = new (Context) ObjCAtCatchStmt(AtLoc, RParen,
-    static_cast<Stmt*>(Parm.release()), static_cast<Stmt*>(Body.release()),
+    static_cast<DeclStmt*>(Parm.release()), static_cast<Stmt*>(Body.release()),
     CatchList);
   return Owned(CatchList ? CatchList : CS);
 }
-- 
2.40.0