From 0743a72caac082e6fa4e12c4c830fcd1e09fae40 Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <simon@atanasyan.com>
Date: Thu, 6 Feb 2014 07:35:16 +0000
Subject: [PATCH] Accept and handle absolute symbols with empty name.

llvm-svn: 200911
---
 .../ReaderWriter/YAML/ReaderWriterYAML.cpp    |  3 ++-
 lld/test/elf/abs-dup.objtxt                   | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 lld/test/elf/abs-dup.objtxt

diff --git a/lld/lib/ReaderWriter/YAML/ReaderWriterYAML.cpp b/lld/lib/ReaderWriter/YAML/ReaderWriterYAML.cpp
index fab9e9100fcf..f5cb351e229d 100644
--- a/lld/lib/ReaderWriter/YAML/ReaderWriterYAML.cpp
+++ b/lld/lib/ReaderWriter/YAML/ReaderWriterYAML.cpp
@@ -96,7 +96,8 @@ public:
       buildDuplicateNameMap(*shlibAtom);
     }
     for (const lld::AbsoluteAtom *absAtom : file.absolute()) {
-      buildDuplicateNameMap(*absAtom);
+      if (!absAtom->name().empty())
+        buildDuplicateNameMap(*absAtom);
     }
   }
 
diff --git a/lld/test/elf/abs-dup.objtxt b/lld/test/elf/abs-dup.objtxt
new file mode 100644
index 000000000000..7340a29b0f00
--- /dev/null
+++ b/lld/test/elf/abs-dup.objtxt
@@ -0,0 +1,19 @@
+# Tests handling an absolute symbol with no name
+# RUN: lld -flavor gnu -target x86_64 -r %s \
+# RUN:     --output-filetype=yaml | FileCheck %s
+
+absolute-atoms:
+  - name:            abs
+    scope:           static
+    value:           0x10
+  - name:            ''
+    scope:           static
+    value:           0x15
+
+# CHECK: absolute-atoms:
+# CHECK:   - name:            abs
+# CHECK:     scope:           static
+# CHECK:     value:           0x0000000000000010
+# CHECK:   - name:            ''
+# CHECK:     scope:           static
+# CHECK:     value:           0x0000000000000015