commit 1223416411595eefe9ad010cb0649b88938ec840
author Benjamin Kramer <benny.kra@googlemail.com> Mon Sep 19 17:56:00 2011 +0000
committer Benjamin Kramer <benny.kra@googlemail.com> Mon Sep 19 17:56:00 2011 +0000
tree 852c2ba087046f7aa1361aa5dbb2aaa16e4c4dca
parent 7251e41b161bbbb1490cf1157e37818989b07708

MCInstrAnalysis: Don't crash on instructions with no operands.

llvm-svn: 140027

llvm/lib/MC/MCInstrAnalysis.cpp

diff --git a/llvm/lib/MC/MCInstrAnalysis.cpp b/llvm/lib/MC/MCInstrAnalysis.cpp
index 03a35c5..7736702 100644
--- a/llvm/lib/MC/MCInstrAnalysis.cpp
+++ b/llvm/lib/MC/MCInstrAnalysis.cpp
@@ -12,7 +12,8 @@
 
 uint64_t MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
                                          uint64_t Size) const {
-  if (Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
+  if (Inst.getNumOperands() == 0 ||
+      Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
     return -1ULL;
 
   int64_t Imm = Inst.getOperand(0).getImm();