[llvm] [llvm-objdump][ELF] Ensure offset to verdaux entry array does not go past size (PR #115284)

[Fangrui Song via llvm-commits]

================
@@ -0,0 +1,25 @@
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-objdump -p %t 2>&1 | FileCheck --check-prefix=BROKEN-VERDEF -DFILE=%t %s
+
+# Ensure we emit a warning when vd_aux offset field is invalid.
----------------
MaskRay wrote:

`## `

https://github.com/llvm/llvm-project/pull/115284