From 28328f9a0ad083bc243afbb38ebe39ddec0105d8 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 28 Oct 2006 18:11:20 +0000
Subject: add an assert

llvm-svn: 31267
---
 llvm/lib/CodeGen/MachineFunction.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'llvm/lib/CodeGen/MachineFunction.cpp')

diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index 205414e7264..7617de962d7 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -363,6 +363,7 @@ void MachineFrameInfo::dump(const MachineFunction &MF) const {
 ///
 unsigned MachineJumpTableInfo::getJumpTableIndex(
                                      std::vector<MachineBasicBlock*> &DestBBs) {
+  assert(!DestBBs.empty() && "Cannot create an empty jump table!");
   for (unsigned i = 0, e = JumpTables.size(); i != e; ++i)
     if (JumpTables[i].MBBs == DestBBs)
       return i;
-- 
cgit v1.2.3