1 files changed, 77 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/src/verbose_abort.cpp b/contrib/llvm-project/libcxx/src/verbose_abort.cpp
new file mode 100644
index 000000000000..a9fba5e3c007
--- /dev/null
+++ b/contrib/llvm-project/libcxx/src/verbose_abort.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <__verbose_abort>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+
+#ifdef __BIONIC__
+#  include <android/api-level.h>
+#  if __ANDROID_API__ >= 21
+#    include <syslog.h>
+extern "C" void android_set_abort_message(const char* msg);
+#  else
+#    include <assert.h>
+#  endif // __ANDROID_API__ >= 21
+#endif   // __BIONIC__
+
+#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
+#  include <CrashReporterClient.h>
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_LIBCPP_WEAK
+void __libcpp_verbose_abort(char const* format, ...) {
+  // Write message to stderr. We do this before formatting into a
+  // buffer so that we still get some information out if that fails.
+  {
+    va_list list;
+    va_start(list, format);
+    std::vfprintf(stderr, format, list);
+    va_end(list);
+  }
+
+  // Format the arguments into an allocated buffer for CrashReport & friends.
+  // We leak the buffer on purpose, since we're about to abort() anyway.
+  char* buffer; (void)buffer;
+  va_list list;
+  va_start(list, format);
+
+#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
+  // Note that we should technically synchronize accesses here (by e.g. taking a lock),
+  // however concretely we're only setting a pointer, so the likelihood of a race here
+  // is low.
+  vasprintf(&buffer, format, list);
+  CRSetCrashLogMessage(buffer);
+#elif defined(__BIONIC__)
+  vasprintf(&buffer, format, list);
+
+#  if __ANDROID_API__ >= 21
+  // Show error in tombstone.
+  android_set_abort_message(buffer);
+
+  // Show error in logcat.
+  openlog("libc++", 0, 0);
+  syslog(LOG_CRIT, "%s", buffer);
+  closelog();
+#  else
+  // The good error reporting wasn't available in Android until L. Since we're
+  // about to abort anyway, just call __assert2, which will log _somewhere_
+  // (tombstone and/or logcat) in older releases.
+  __assert2(__FILE__, __LINE__, __func__, buffer);
+#  endif // __ANDROID_API__ >= 21
+#endif
+  va_end(list);
+
+  std::abort();
+}
+
+_LIBCPP_END_NAMESPACE_STD