[MachO] Add out-of-bounds check to MachOObjectFile.cpp

This is a followup to rL333496.

Differential Revision: https://reviews.llvm.org/D47544

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333929 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp
index 50dd476..731ff4e 100644 (file)
--- a/lib/Object/MachOObjectFile.cpp
+++ b/lib/Object/MachOObjectFile.cpp
@@ -107,6 +107,7 @@ getSectionPtr(const MachOObjectFile &O, MachOObjectFile::LoadCommandInfo L,
 }
 
 static const char *getPtr(const MachOObjectFile &O, size_t Offset) {
+  assert(Offset <= O.getData().size());
   return O.getData().data() + Offset;
 }