1 //===-- ubsan_flags.cc ----------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Runtime flags for UndefinedBehaviorSanitizer.
12 //===----------------------------------------------------------------------===//
14 #include "ubsan_platform.h"
16 #include "ubsan_flags.h"
17 #include "sanitizer_common/sanitizer_common.h"
18 #include "sanitizer_common/sanitizer_flags.h"
19 #include "sanitizer_common/sanitizer_flag_parser.h"
25 const char *MaybeCallUbsanDefaultOptions() {
26 return (&__ubsan_default_options) ? __ubsan_default_options() : "";
31 void Flags::SetDefaults() {
32 #define UBSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
33 #include "ubsan_flags.inc"
37 void RegisterUbsanFlags(FlagParser *parser, Flags *f) {
38 #define UBSAN_FLAG(Type, Name, DefaultValue, Description) \
39 RegisterFlag(parser, #Name, Description, &f->Name);
40 #include "ubsan_flags.inc"
44 void InitializeFlags() {
45 SetCommonFlagsDefaults();
48 cf.CopyFrom(*common_flags());
49 cf.print_summary = false;
50 cf.external_symbolizer_path = getenv("UBSAN_SYMBOLIZER_PATH");
51 OverrideCommonFlags(cf);
58 RegisterCommonFlags(&parser);
59 RegisterUbsanFlags(&parser, f);
61 // Override from user-specified string.
62 parser.ParseString(MaybeCallUbsanDefaultOptions());
63 // Override from environment variable.
64 parser.ParseString(getenv("UBSAN_OPTIONS"));
65 InitializeCommonFlags();
66 if (Verbosity()) ReportUnrecognizedFlags();
68 if (common_flags()->help) parser.PrintFlagDescriptions();
71 } // namespace __ubsan
73 SANITIZER_INTERFACE_WEAK_DEF(const char *, __ubsan_default_options, void) {
77 #endif // CAN_SANITIZE_UB