add test file for melformed object file

Author: sivan-shani

lld/test/ELF/aarch64-build-attributes-melformed.s

@@ -0,0 +1,23 @@
+
+# RUN: yaml2obj %s -o %t.o
+# RUN: ld.lld %t.o /dev/null 2>&1 | FileCheck %s
+
+# CHECK: (.ARM.attributes): invalid Extended Build Attributes subsection size at offset: 3B
+
+
+--- !ELF
+FileHeader:
+  Class: ELFCLASS64
+  Data: ELFDATA2LSB
+  OSABI: ELFOSABI_NONE
+  Type: ET_REL
+  Machine: EM_AARCH64
+  Entry: 0x0
+
+Sections:
+  - Name: .ARM.attributes
+    Type: 0x70000003  # SHT_LOPROC + 3
+    AddressAlign: 1
+    Offset: 0x40
+    Size: 0x41
+    Content: "411900000061656162695f7061757468616269000000010102012000000061656162695f666561747572655f616e645f6269747300010000010101020000"