Index: llvm-readobj/MachODumper.cpp
===================================================================
--- llvm-readobj/MachODumper.cpp
+++ llvm-readobj/MachODumper.cpp
@@ -268,7 +268,6 @@
 
   struct MachOSegment {
     StringRef CmdName;
-    StringRef SegName;
     uint64_t cmdsize;
     uint64_t vmaddr;
     uint64_t vmsize;
@@ -336,7 +335,6 @@
   if (!Obj->is64Bit()) {
     MachO::segment_command SC = Obj->getSegmentLoadCommand(L);
     Segment.CmdName = "LC_SEGMENT";
-    Segment.SegName = SC.segname;
     Segment.cmdsize = SC.cmdsize;
     Segment.vmaddr = SC.vmaddr;
     Segment.vmsize = SC.vmsize;
@@ -350,7 +348,6 @@
   }
   MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(L);
   Segment.CmdName = "LC_SEGMENT_64";
-  Segment.SegName = SC.segname;
   Segment.cmdsize = SC.cmdsize;
   Segment.vmaddr = SC.vmaddr;
   Segment.vmsize = SC.vmsize;
@@ -760,10 +757,19 @@
   for (const auto &Load : Obj->load_commands()) {
     if (Load.C.cmd == MachO::LC_SEGMENT || Load.C.cmd == MachO::LC_SEGMENT_64) {
       MachOSegment MOSegment;
+      StringRef SegName;
       getSegment(Obj, Load, MOSegment);
+      if (!Obj->is64Bit()) {
+        MachO::segment_command SC = Obj->getSegmentLoadCommand(Load);
+        SegName = SC.segname;
+      }
+      else {
+        MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(Load);
+        SegName = SC.segname;
+      }
       DictScope Group(W, "Segment");
       W.printString("Cmd", MOSegment.CmdName);
-      W.printString("Name", MOSegment.SegName);
+      W.printString("Name", SegName);
       W.printNumber("Size", MOSegment.cmdsize);
       W.printHex("vmaddr", MOSegment.vmaddr);
       W.printHex("vmsize", MOSegment.vmsize);