+// Integrate with crash reporter libraries.
+#if defined (__APPLE__) && HAVE_CRASHREPORTERCLIENT_H
+// If any clients of llvm try to link to libCrashReporterClient.a themselves,
+// only one crash info struct will be used.
+extern "C" {
+CRASH_REPORTER_CLIENT_HIDDEN
+struct crashreporter_annotations_t gCRAnnotations
+ __attribute__((section("__DATA," CRASHREPORTER_ANNOTATIONS_SECTION)))
+ = { CRASHREPORTER_ANNOTATIONS_VERSION, 0, 0, 0, 0, 0, 0 };
+}
+#elif defined (__APPLE__) && HAVE_CRASHREPORTER_INFO
+static const char *__crashreporter_info__ = 0;
+asm(".desc ___crashreporter_info__, 0x10");
+#endif
+
+
+/// CrashHandler - This callback is run if a fatal signal is delivered to the
+/// process, it prints the pretty stack trace.
+static void CrashHandler(void *) {
+#ifndef __APPLE__
+ // On non-apple systems, just emit the crash stack trace to stderr.
+ PrintCurStackTrace(errs());
+#else
+ // Otherwise, emit to a smallvector of chars, send *that* to stderr, but also
+ // put it into __crashreporter_info__.
+ SmallString<2048> TmpStr;
+ {
+ raw_svector_ostream Stream(TmpStr);
+ PrintCurStackTrace(Stream);
+ }
+
+ if (!TmpStr.empty()) {
+#ifdef HAVE_CRASHREPORTERCLIENT_H
+ // Cast to void to avoid warning.
+ (void)CRSetCrashLogMessage(std::string(TmpStr.str()).c_str());
+#elif HAVE_CRASHREPORTER_INFO
+ __crashreporter_info__ = strdup(std::string(TmpStr.str()).c_str());
+#endif
+ errs() << TmpStr.str();
+ }
+
+#endif
+}
+