Index: lld/trunk/ELF/InputFiles.cpp
===================================================================
--- lld/trunk/ELF/InputFiles.cpp
+++ lld/trunk/ELF/InputFiles.cpp
@@ -214,6 +214,11 @@
         fatal("Invalid relocated section index");
       InputSectionBase<ELFT> *RelocatedSection =
           Sections[RelocatedSectionIndex];
+      // Strictly speaking, a relocation section must be included in the
+      // group of the section it relocates. However, LLVM 3.3 and earlier
+      // would fail to do so, so we gracefully handle that case.
+      if (RelocatedSection == &InputSection<ELFT>::Discarded)
+        continue;
       if (!RelocatedSection)
         fatal("Unsupported relocation reference");
       if (auto *S = dyn_cast<InputSection<ELFT>>(RelocatedSection)) {
Index: lld/trunk/test/ELF/llvm33-rela-outside-group.s
===================================================================
--- lld/trunk/test/ELF/llvm33-rela-outside-group.s
+++ lld/trunk/test/ELF/llvm33-rela-outside-group.s
@@ -0,0 +1,11 @@
+// Input file generated with:
+// llvm33/llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %S/Inputs/llvm33-rela-outside-group.o
+//
+// RUN: ld.lld -shared %S/Inputs/llvm33-rela-outside-group.o %S/Inputs/llvm33-rela-outside-group.o
+
+	.global bar
+	.weak	_Z3fooIiEvv
+
+	.section	.text._Z3fooIiEvv,"axG",@progbits,_Z3fooIiEvv,comdat
+_Z3fooIiEvv:
+	callq	bar