| //===-- ubsan_flags.cc ----------------------------------------------------===// |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Runtime flags for UndefinedBehaviorSanitizer. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ubsan_platform.h" |
| #if CAN_SANITIZE_UB |
| #include "ubsan_flags.h" |
| #include "sanitizer_common/sanitizer_common.h" |
| #include "sanitizer_common/sanitizer_flags.h" |
| #include "sanitizer_common/sanitizer_flag_parser.h" |
| |
| namespace __ubsan { |
| |
| const char *MaybeCallUbsanDefaultOptions() { |
| return (&__ubsan_default_options) ? __ubsan_default_options() : ""; |
| } |
| |
| Flags ubsan_flags; |
| |
| void Flags::SetDefaults() { |
| #define UBSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue; |
| #include "ubsan_flags.inc" |
| #undef UBSAN_FLAG |
| } |
| |
| void RegisterUbsanFlags(FlagParser *parser, Flags *f) { |
| #define UBSAN_FLAG(Type, Name, DefaultValue, Description) \ |
| RegisterFlag(parser, #Name, Description, &f->Name); |
| #include "ubsan_flags.inc" |
| #undef UBSAN_FLAG |
| } |
| |
| void InitializeFlags() { |
| SetCommonFlagsDefaults(); |
| { |
| CommonFlags cf; |
| cf.CopyFrom(*common_flags()); |
| cf.print_summary = false; |
| cf.external_symbolizer_path = GetEnv("UBSAN_SYMBOLIZER_PATH"); |
| OverrideCommonFlags(cf); |
| } |
| |
| Flags *f = flags(); |
| f->SetDefaults(); |
| |
| FlagParser parser; |
| RegisterCommonFlags(&parser); |
| RegisterUbsanFlags(&parser, f); |
| |
| // Override from user-specified string. |
| parser.ParseString(MaybeCallUbsanDefaultOptions()); |
| // Override from environment variable. |
| parser.ParseString(GetEnv("UBSAN_OPTIONS")); |
| InitializeCommonFlags(); |
| if (Verbosity()) ReportUnrecognizedFlags(); |
| |
| if (common_flags()->help) parser.PrintFlagDescriptions(); |
| } |
| |
| } // namespace __ubsan |
| |
| SANITIZER_INTERFACE_WEAK_DEF(const char *, __ubsan_default_options, void) { |
| return ""; |
| } |
| |
| #endif // CAN_SANITIZE_UB |