Index: lld/trunk/COFF/InputFiles.cpp
===================================================================
--- lld/trunk/COFF/InputFiles.cpp
+++ lld/trunk/COFF/InputFiles.cpp
@@ -115,9 +115,9 @@
     const coff_section *Sec;
     StringRef Name;
     std::error_code EC = COFFObj->getSection(I, Sec);
-    error(EC, Twine("getSection failed: ") + Name);
+    error(EC, Twine("getSection failed: #") + Twine(I));
     EC = COFFObj->getSectionName(Sec, Name);
-    error(EC, Twine("getSectionName failed: ") + Name);
+    error(EC, Twine("getSectionName failed: #") + Twine(I));
     if (Name == ".sxdata") {
       SXData = Sec;
       continue;
Index: lld/trunk/test/COFF/invalid-obj.test
===================================================================
--- /dev/null
+++ lld/trunk/test/COFF/invalid-obj.test
@@ -0,0 +1,14 @@
+# RUN: yaml2obj %s > %t.obj
+# RUN: not lld-link %t.obj 2>&1 | FileCheck %s
+
+# CHECK: getSectionName failed: #1:
+
+---
+header:
+  Machine:         IMAGE_FILE_MACHINE_AMD64
+  Characteristics: [  ]
+sections:
+  - Name:            '/1'
+    Characteristics: [  ]
+    SectionData:     00
+symbols: