Mock up of the software. Fully generated with Gemini 3.8 as a proof of concept.

vendor/llvm/include/clang-c/FatalErrorHandler.h

@@ -0,0 +1,32 @@
+/*===-- clang-c/FatalErrorHandler.h - Fatal Error Handling --------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_FATAL_ERROR_HANDLER_H
+#define LLVM_CLANG_C_FATAL_ERROR_HANDLER_H
+
+#include "clang-c/ExternC.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * Installs error handler that prints error message to stderr and calls abort().
+ * Replaces currently installed error handler (if any).
+ */
+void clang_install_aborting_llvm_fatal_error_handler(void);
+
+/**
+ * Removes currently installed error handler (if any).
+ * If no error handler is intalled, the default strategy is to print error
+ * message to stderr and call exit(1).
+ */
+void clang_uninstall_llvm_fatal_error_handler(void);
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif