[ELF] - Added test case for invalid relocation target errors. NFCI.

We had a proper error reporting, but no test cases.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@347536 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/ELF/Inputs/bad-reloc-target.test b/test/ELF/Inputs/bad-reloc-target.test
new file mode 100644
index 0000000..dabd005
--- /dev/null
+++ b/test/ELF/Inputs/bad-reloc-target.test
@@ -0,0 +1,21 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+  - Name:            .rela.text
+    Type:            SHT_RELA
+    Link:            .symtab
+    Info:            99
+    Relocations:
+      - Offset:          0x0000000000000000
+        Symbol:          foo
+        Type:            R_X86_64_64
+Symbols:
+  Global:
+    - Name:            foo
\ No newline at end of file
diff --git a/test/ELF/bad-reloc-target.test b/test/ELF/bad-reloc-target.test
new file mode 100644
index 0000000..fea8c5f
--- /dev/null
+++ b/test/ELF/bad-reloc-target.test
@@ -0,0 +1,29 @@
+# RUN: yaml2obj %s -o %t1.o
+# RUN: not ld.lld %t1.o -o %t1 2>&1 | FileCheck %s
+# CHECK: error: {{.*}}.o: unsupported relocation reference
+
+# RUN: yaml2obj %S/Inputs/bad-reloc-target.test -o %t2.o
+# RUN: not ld.lld %t2.o -o %t2 2>&1 | FileCheck %s --check-prefix=ERR2
+# ERR2: error: {{.*}}.o: invalid relocated section index: 99
+
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+  - Name:            .rela.text
+    Type:            SHT_RELA
+    Link:            .symtab
+    Info:            0
+    Relocations:
+      - Offset:          0x0000000000000000
+        Symbol:          foo
+        Type:            R_X86_64_64
+Symbols:
+  Global:
+    - Name:            foo
\ No newline at end of file