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usr / src / contrib / llvm-project / compiler-rt / lib / ubsan /

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📄 ubsan.syms.extra(10 B)
📄 ubsan_checks.inc(3.71 KB)
📄 ubsan_diag.cpp(14.53 KB)
📄 ubsan_diag.h(7.57 KB)
📄 ubsan_diag_standalone.cpp(1.24 KB)
📄 ubsan_flags.cpp(2.26 KB)
📄 ubsan_flags.h(1.28 KB)
📄 ubsan_flags.inc(1.25 KB)
📄 ubsan_handlers.cpp(32.22 KB)
📄 ubsan_handlers.h(7.12 KB)
📄 ubsan_handlers_cxx.cpp(7.2 KB)
📄 ubsan_handlers_cxx.h(2.1 KB)
📄 ubsan_init.cpp(1.79 KB)
📄 ubsan_init.h(1.06 KB)
📄 ubsan_init_standalone.cpp(977 B)
📄 ubsan_init_standalone_preinit.cpp(1.04 KB)
📄 ubsan_interface.inc(3.25 KB)
📄 ubsan_monitor.cpp(2.67 KB)
📄 ubsan_monitor.h(1.72 KB)
📄 ubsan_platform.h(952 B)
📄 ubsan_signals_standalone.cpp(2.46 KB)
📄 ubsan_signals_standalone.h(775 B)
📄 ubsan_type_hash.cpp(1.25 KB)
📄 ubsan_type_hash.h(2.73 KB)
📄 ubsan_type_hash_itanium.cpp(9.47 KB)
📄 ubsan_type_hash_win.cpp(2.82 KB)
📄 ubsan_value.cpp(5.21 KB)
📄 ubsan_value.h(6.04 KB)
📄 ubsan_win_dll_thunk.cpp(1.02 KB)
📄 ubsan_win_dynamic_runtime_thunk.cpp(952 B)
📄 ubsan_win_weak_interception.cpp(1.15 KB)
📄 weak_symbols.txt(25 B)

Editing: ubsan_monitor.cpp

//===-- ubsan_monitor.cpp ---------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Hooks which allow a monitor process to inspect UBSan's diagnostics.
//
//===----------------------------------------------------------------------===//

#include "ubsan_monitor.h"

using namespace __ubsan;

UndefinedBehaviorReport::UndefinedBehaviorReport(const char *IssueKind,
                                                 Location &Loc,
                                                 InternalScopedString &Msg)
    : IssueKind(IssueKind), Loc(Loc), Buffer(Msg.length() + 1) {
  // We have the common sanitizer reporting lock, so it's safe to register a
  // new UB report.
  RegisterUndefinedBehaviorReport(this);

// Make a copy of the diagnostic.
  Buffer.append("%s", Msg.data());

// Let the monitor know that a report is available.
  __ubsan_on_report();
}

static UndefinedBehaviorReport *CurrentUBR;

void __ubsan::RegisterUndefinedBehaviorReport(UndefinedBehaviorReport *UBR) {
  CurrentUBR = UBR;
}

SANITIZER_WEAK_DEFAULT_IMPL
void __ubsan::__ubsan_on_report(void) {}

void __ubsan::__ubsan_get_current_report_data(const char **OutIssueKind,
                                              const char **OutMessage,
                                              const char **OutFilename,
                                              unsigned *OutLine,
                                              unsigned *OutCol,
                                              char **OutMemoryAddr) {
  if (!OutIssueKind || !OutMessage || !OutFilename || !OutLine || !OutCol ||
      !OutMemoryAddr)
    UNREACHABLE("Invalid arguments passed to __ubsan_get_current_report_data");

InternalScopedString &Buf = CurrentUBR->Buffer;

// Ensure that the first character of the diagnostic text can't start with a
  // lowercase letter.
  char FirstChar = Buf.data()[0];
  if (FirstChar >= 'a' && FirstChar <= 'z')
    Buf.data()[0] = FirstChar - 'a' + 'A';

*OutIssueKind = CurrentUBR->IssueKind;
  *OutMessage = Buf.data();
  if (!CurrentUBR->Loc.isSourceLocation()) {
    *OutFilename = "<unknown>";
    *OutLine = *OutCol = 0;
  } else {
    SourceLocation SL = CurrentUBR->Loc.getSourceLocation();
    *OutFilename = SL.getFilename();
    *OutLine = SL.getLine();
    *OutCol = SL.getColumn();
  }

if (CurrentUBR->Loc.isMemoryLocation())
    *OutMemoryAddr = (char *)CurrentUBR->Loc.getMemoryLocation();
  else
    *OutMemoryAddr = nullptr;
}

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Editing: ubsan_monitor.cpp

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