[llvm] [llvm-objdump] Add possibility to verify .note section format (PR #90458)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,46 @@
+## Verify that --add-section warns on invalid note sections.
+
+## Add [namesz, descsz, type, name, desc] for a build id.
+
+## Notes should be padded on 8 bytes.
+# RUN: echo -e -n "\x04\x00\x00\x00" >  %t-miss-padding-note.bin
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MaskRay wrote:

`RUN: printf` is more popular to craft specific bytes.

https://github.com/llvm/llvm-project/pull/90458