[clang] Add support for builtin_verbose_trap (PR #79230)

[David Blaikie via cfe-commits]

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@@ -3379,6 +3379,60 @@ Query for this feature with ``__has_builtin(__builtin_debugtrap)``.
 
 Query for this feature with ``__has_builtin(__builtin_trap)``.
 
+``__builtin_verbose_trap``
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dwblaikie wrote:

Ah, OK - that seems like more reason the prefix should be singular. Like we shouldn't add a new/distinct prefix for array bounds? Or other things we want to error out on - because it'd be an ongoing maintenance problem updating consumers like lldb each time we add one? 

So maybe we should have a generic prefix we'll always use (`__builtin_trap`, say) and then maybe some identifier after that in a known format (eg: space, identifier, space) that can be used? then an error message string?

https://github.com/llvm/llvm-project/pull/79230