[llvm] Add test for dwarf verification JSON output (PR #124936)

[Felipe de Azevedo Piovezan via llvm-commits]

felipepiovezan wrote:

is your intent to verify errors in the debug_names section? If so, you don't need to use assembly, it's possible to use a YAML format too, e.g.: llvm-project/llvm/unittests/DebugInfo/DWARF/DWARFAcceleratorTableTest.cpp

https://github.com/llvm/llvm-project/pull/124936