From e5005d0062fa4c8f5707428f7b8ad8484a002d83 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Wed, 9 Feb 2011 21:52:06 +0000
Subject: [PATCH] Assert on bad jump tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125225 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 4528a34286c..bf83f841294 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1033,6 +1033,7 @@ void AsmPrinter::EmitJumpTableInfo() {
 void AsmPrinter::EmitJumpTableEntry(const MachineJumpTableInfo *MJTI,
                                     const MachineBasicBlock *MBB,
                                     unsigned UID) const {
+  assert(MBB && MBB->getNumber() >= 0 && "Invalid basic block");
   const MCExpr *Value = 0;
   switch (MJTI->getEntryKind()) {
   case MachineJumpTableInfo::EK_Inline: