[clang] fix: replace report_fatal_error with Diags and exit (PR #147959)

[Aaron Ballman via cfe-commits]

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@@ -370,6 +370,8 @@ def warn_profile_data_misexpect : Warning<
   "potential performance regression from use of __builtin_expect(): "
   "annotation was correct on %0 of profiled executions">,
   BackendInfo, InGroup<MisExpect>;
+def err_sanitize_ignorelist_failure : Error<
+  "failed to sanitizer ignorelist file: %0">;
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AaronBallman wrote:

The diagnostic is missing a verb. Failed to open? Failed to parse?

https://github.com/llvm/llvm-project/pull/147959