vendor/compiler-rt/compiler-rt-r224034

1 files changed, 63 insertions, 0 deletions

diff --git a/lib/ubsan/ubsan_flags.cc b/lib/ubsan/ubsan_flags.cc
new file mode 100644
index 0000000000000..eda11f1b265c4
--- /dev/null
+++ b/lib/ubsan/ubsan_flags.cc
@@ -0,0 +1,63 @@
+//===-- ubsan_flags.cc ----------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Runtime flags for UndefinedBehaviorSanitizer.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ubsan_flags.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_flags.h"
+
+namespace __ubsan {
+
+static const char *MaybeCallUbsanDefaultOptions() {
+  return (&__ubsan_default_options) ? __ubsan_default_options() : "";
+}
+
+void InitializeCommonFlags() {
+  CommonFlags *cf = common_flags();
+  SetCommonFlagsDefaults(cf);
+  cf->print_summary = false;
+  // Override from user-specified string.
+  ParseCommonFlagsFromString(cf, MaybeCallUbsanDefaultOptions());
+  // Override from environment variable.
+  ParseCommonFlagsFromString(cf, GetEnv("UBSAN_OPTIONS"));
+}
+
+Flags ubsan_flags;
+
+static void ParseFlagsFromString(Flags *f, const char *str) {
+  if (!str)
+    return;
+  ParseFlag(str, &f->halt_on_error, "halt_on_error",
+            "Crash the program after printing the first error report");
+  ParseFlag(str, &f->print_stacktrace, "print_stacktrace",
+            "Include full stacktrace into an error report");
+}
+
+void InitializeFlags() {
+  Flags *f = flags();
+  // Default values.
+  f->halt_on_error = false;
+  f->print_stacktrace = false;
+  // Override from user-specified string.
+  ParseFlagsFromString(f, MaybeCallUbsanDefaultOptions());
+  // Override from environment variable.
+  ParseFlagsFromString(f, GetEnv("UBSAN_OPTIONS"));
+}
+
+}  // namespace __ubsan
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char *__ubsan_default_options() { return ""; }
+}  // extern "C"
+#endif