Accept and handle absolute symbols with empty name.

llvm-svn: 200911

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);
     }
   }
 

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