Index: llvm/trunk/lib/Object/SymbolSize.cpp
===================================================================
--- llvm/trunk/lib/Object/SymbolSize.cpp
+++ llvm/trunk/lib/Object/SymbolSize.cpp
@@ -66,6 +66,10 @@
     Addresses.push_back(
         {O.symbol_end(), Address + Size, 0, getSectionID(O, Sec)});
   }
+
+  if (Addresses.empty())
+    return Ret;
+
   array_pod_sort(Addresses.begin(), Addresses.end(), compareAddress);
 
   // Compute the size as the gap to the next symbol
Index: llvm/trunk/test/tools/llvm-symbolizer/sym.test
===================================================================
--- llvm/trunk/test/tools/llvm-symbolizer/sym.test
+++ llvm/trunk/test/tools/llvm-symbolizer/sym.test
@@ -19,6 +19,8 @@
 
 RUN: llvm-symbolizer -print-address -obj=%p/Inputs/addr.exe < %p/Inputs/addr.inp | FileCheck %s
 RUN: llvm-symbolizer -inlining -print-address -pretty-print -obj=%p/Inputs/addr.exe < %p/Inputs/addr.inp | FileCheck --check-prefix="PRETTY" %s 
+RUN: echo "0x1" > %t.input
+RUN: llvm-symbolizer -obj=%p/Inputs/zero < %t.input | FileCheck --check-prefix="ZERO" %s
 
 #CHECK: some text
 #CHECK: 0x40054d
@@ -31,4 +33,6 @@
 #PRETTY:  (inlined by) inc at {{[/\]+}}tmp{{[/\]+}}x.c:7:0
 #PRETTY   (inlined by) main at {{[/\]+}}tmp{{[/\]+}}x.c:14:0
 #PRETTY: some text2
-
+#
+#ZERO: ??
+#ZERO: ??:0:0