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

[Akira Hatanaka via cfe-commits]

================
@@ -172,6 +172,27 @@ static bool checkArgCount(Sema &S, CallExpr *Call, 
unsigned DesiredArgCount) {
          << /*is non object*/ 0 << Call->getArg(1)->getSourceRange();
 }
 
+static bool checkBuiltinVerboseTrap(CallExpr *Call, Sema &S) {
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ahatanak wrote:

clang already checks that the number of arguments is exactly 2 (see 
`test/SemaCXX/verbose-trap.cpp`).

I agree that we should check that `$` isn't in the strings.

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