1 files changed, 77 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Support/ErrorHandling.cpp b/contrib/llvm/lib/Support/ErrorHandling.cpp
new file mode 100644
index 0000000..7e7ca9d
--- /dev/null
+++ b/contrib/llvm/lib/Support/ErrorHandling.cpp
@@ -0,0 +1,77 @@
+//===- lib/Support/ErrorHandling.cpp - Callbacks for errors ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines an API used to indicate fatal error conditions.  Non-fatal
+// errors (most of them) should be handled through LLVMContext.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Signals.h"
+#include "llvm/System/Threading.h"
+#include <cassert>
+#include <cstdlib>
+using namespace llvm;
+using namespace std;
+
+static fatal_error_handler_t ErrorHandler = 0;
+static void *ErrorHandlerUserData = 0;
+
+void llvm::install_fatal_error_handler(fatal_error_handler_t handler,
+                                       void *user_data) {
+  assert(!llvm_is_multithreaded() &&
+         "Cannot register error handlers after starting multithreaded mode!\n");
+  assert(!ErrorHandler && "Error handler already registered!\n");
+  ErrorHandler = handler;
+  ErrorHandlerUserData = user_data;
+}
+
+void llvm::remove_fatal_error_handler() {
+  ErrorHandler = 0;
+}
+
+void llvm::report_fatal_error(const char *reason) {
+  report_fatal_error(Twine(reason));
+}
+
+void llvm::report_fatal_error(const std::string &reason) {
+  report_fatal_error(Twine(reason));
+}
+
+void llvm::report_fatal_error(const Twine &reason) {
+  if (!ErrorHandler) {
+    errs() << "LLVM ERROR: " << reason << "\n";
+  } else {
+    ErrorHandler(ErrorHandlerUserData, reason.str());
+  }
+
+  // If we reached here, we are failing ungracefully. Run the interrupt handlers
+  // to make sure any special cleanups get done, in particular that we remove
+  // files registered with RemoveFileOnSignal.
+  sys::RunInterruptHandlers();
+
+  exit(1);
+}
+
+void llvm::llvm_unreachable_internal(const char *msg, const char *file,
+                                     unsigned line) {
+  // This code intentionally doesn't call the ErrorHandler callback, because
+  // llvm_unreachable is intended to be used to indicate "impossible"
+  // situations, and not legitimate runtime errors.
+  if (msg)
+    dbgs() << msg << "\n";
+  dbgs() << "UNREACHABLE executed";
+  if (file)
+    dbgs() << " at " << file << ":" << line;
+  dbgs() << "!\n";
+  abort();
+}