Index: ELF/Relocations.cpp
===================================================================
--- ELF/Relocations.cpp
+++ ELF/Relocations.cpp
@@ -1023,15 +1023,18 @@
   return CurTS;
 }
 
+// Add a Thunk that needs to be placed in a ThunkSection that immediately
+// precedes its Target.
 ThunkSection *ThunkCreator::getISThunkSec(InputSection *IS, OutputSection *OS) {
   ThunkSection *TS = ThunkedSections.lookup(IS);
   if (TS)
     return TS;
 
-  // Find InputSectionRange within TOS that IS is in
-  OutputSection *C = IS->getParent();
+  // Find InputSectionRange within Target Output Section (TOS) that the
+  // InputSection (IS) that we need to precede is in.
+  OutputSection *TOS = IS->getParent();
   std::vector<InputSection *> *Range = nullptr;
-  for (BaseCommand *BC : C->Commands)
+  for (BaseCommand *BC : TOS->Commands)
     if (auto *ISD = dyn_cast<InputSectionDescription>(BC)) {
       InputSection *first = ISD->Sections.front();
       InputSection *last = ISD->Sections.back();
@@ -1041,7 +1044,7 @@
         break;
       }
     }
-  TS = addThunkSection(C, Range, IS->OutSecOff);
+  TS = addThunkSection(TOS, Range, IS->OutSecOff);
   ThunkedSections[IS] = TS;
   return TS;
 }