Index: test/tools/llvm-nm/debug-syms.test
===================================================================
--- /dev/null
+++ test/tools/llvm-nm/debug-syms.test
@@ -0,0 +1,32 @@
+# RUN: yaml2obj %s > %t.o
+# RUN: llvm-nm --debug-syms %t.o | FileCheck %s --implicit-check-not U
+# RUN: llvm-nm -a %t.o | FileCheck %s
+
+!ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_REL
+  Machine: EM_ARM
+Sections:
+  - Name: section
+    Type: SHT_PROGBITS
+Symbols:
+  - Name:    ""
+    Type:    STT_SECTION
+    Section: section
+  - Name:    file_sym
+    Type:    STT_FILE
+    Index:   SHN_ABS
+  - Name:    $d
+    Section: section
+  - Name:    $t
+    Section: section
+  - Name:    $a
+    Section: section
+
+# CHECK: $a
+# CHECK-NEXT: $d
+# CHECK-NEXT: $t
+# CHECK-NEXT: file_sym
+# CHECK-NEXT: section
Index: tools/llvm-nm/llvm-nm.cpp
===================================================================
--- tools/llvm-nm/llvm-nm.cpp
+++ tools/llvm-nm/llvm-nm.cpp
@@ -1193,6 +1193,9 @@
         continue;
       if (WithoutAliases && (SymFlags & SymbolRef::SF_Indirect))
         continue;
+      // Skip the undefined symbol at index 0.
+      if (Sym == *Obj.symbols().begin() && Obj.isELF())
+        continue;
       // If a "-s segname sectname" option was specified and this is a Mach-O
       // file and this section appears in this file, Nsect will be non-zero then
       // see if this symbol is a symbol from that section and if not skip it.