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//===-- 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_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;
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"));
SetVerbosity(common_flags()->verbosity);
if (Verbosity()) ReportUnrecognizedFlags();
if (common_flags()->help) parser.PrintFlagDescriptions();
}
} // namespace __ubsan
extern "C" {
#if !SANITIZER_SUPPORTS_WEAK_HOOKS
SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
const char *__ubsan_default_options() { return ""; }
#endif
#if SANITIZER_WINDOWS
const char *__ubsan_default_default_options() { return ""; }
# ifdef _WIN64
# pragma comment(linker, "/alternatename:__ubsan_default_options=__ubsan_default_default_options")
# else
# pragma comment(linker, "/alternatename:___ubsan_default_options=___ubsan_default_default_options")
# endif
#endif
} // extern "C"
#endif // CAN_SANITIZE_UB
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