Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 675 insertions, 0 deletions

diff --git a/xpcom/base/nsDebugImpl.cpp b/xpcom/base/nsDebugImpl.cpp
new file mode 100644
index 0000000000..4023efd0ec
--- /dev/null
+++ b/xpcom/base/nsDebugImpl.cpp
@@ -0,0 +1,675 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Chromium headers must come before Mozilla headers.
+#include "base/process_util.h"
+
+#include "mozilla/Atomics.h"
+#include "mozilla/IntentionalCrash.h"
+#include "mozilla/Printf.h"
+#include "mozilla/ProfilerMarkers.h"
+
+#include "MainThreadUtils.h"
+#include "nsDebugImpl.h"
+#include "nsDebug.h"
+#include "nsExceptionHandler.h"
+#include "nsString.h"
+#include "nsXULAppAPI.h"
+#include "prerror.h"
+#include "prerr.h"
+#include "prenv.h"
+
+#ifdef ANDROID
+#  include <android/log.h>
+#endif
+
+#ifdef _WIN32
+/* for getenv() */
+#  include <stdlib.h>
+#endif
+
+#include "mozilla/StackWalk.h"
+
+#if defined(XP_UNIX)
+#  include <signal.h>
+#endif
+
+#if defined(XP_WIN)
+#  include <tchar.h>
+#  include "nsString.h"
+#endif
+
+#if defined(XP_MACOSX) || defined(__DragonFly__) || defined(__FreeBSD__) || \
+    defined(__NetBSD__) || defined(__OpenBSD__)
+#  include <stdbool.h>
+#  include <unistd.h>
+#  include <sys/param.h>
+#  include <sys/sysctl.h>
+#endif
+
+#if defined(__OpenBSD__)
+#  include <sys/proc.h>
+#endif
+
+#if defined(__DragonFly__) || defined(__FreeBSD__)
+#  include <sys/user.h>
+#endif
+
+#if defined(__NetBSD__)
+#  undef KERN_PROC
+#  define KERN_PROC KERN_PROC2
+#  define KINFO_PROC struct kinfo_proc2
+#else
+#  define KINFO_PROC struct kinfo_proc
+#endif
+
+#if defined(XP_MACOSX)
+#  define KP_FLAGS kp_proc.p_flag
+#elif defined(__DragonFly__)
+#  define KP_FLAGS kp_flags
+#elif defined(__FreeBSD__)
+#  define KP_FLAGS ki_flag
+#elif defined(__OpenBSD__) && !defined(_P_TRACED)
+#  define KP_FLAGS p_psflags
+#  define P_TRACED PS_TRACED
+#else
+#  define KP_FLAGS p_flag
+#endif
+
+static void Abort(const char* aMsg);
+
+static void RealBreak();
+
+static void Break(const char* aMsg);
+
+#if defined(_WIN32)
+#  include <windows.h>
+#  include <signal.h>
+#  include <malloc.h>  // for _alloca
+#endif
+
+using namespace mozilla;
+
+static const char* sMultiprocessDescription = nullptr;
+
+static Atomic<int32_t> gAssertionCount;
+
+NS_IMPL_QUERY_INTERFACE(nsDebugImpl, nsIDebug2)
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsDebugImpl::AddRef() { return 2; }
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsDebugImpl::Release() { return 1; }
+
+NS_IMETHODIMP
+nsDebugImpl::Assertion(const char* aStr, const char* aExpr, const char* aFile,
+                       int32_t aLine) {
+  NS_DebugBreak(NS_DEBUG_ASSERTION, aStr, aExpr, aFile, aLine);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::Warning(const char* aStr, const char* aFile, int32_t aLine) {
+  NS_DebugBreak(NS_DEBUG_WARNING, aStr, nullptr, aFile, aLine);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::Break(const char* aFile, int32_t aLine) {
+  NS_DebugBreak(NS_DEBUG_BREAK, nullptr, nullptr, aFile, aLine);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::Abort(const char* aFile, int32_t aLine) {
+  NS_DebugBreak(NS_DEBUG_ABORT, nullptr, nullptr, aFile, aLine);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::CrashWithOOM() {
+  NS_ABORT_OOM(-1);
+  return NS_OK;
+}
+
+// From toolkit/library/rust/lib.rs
+extern "C" void intentional_panic(const char* message);
+
+NS_IMETHODIMP
+nsDebugImpl::RustPanic(const char* aMessage) {
+  intentional_panic(aMessage);
+  return NS_OK;
+}
+
+// From toolkit/library/rust/lib.rs
+extern "C" void debug_log(const char* target, const char* message);
+
+NS_IMETHODIMP
+nsDebugImpl::RustLog(const char* aTarget, const char* aMessage) {
+  debug_log(aTarget, aMessage);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::GetIsDebugBuild(bool* aResult) {
+#ifdef DEBUG
+  *aResult = true;
+#else
+  *aResult = false;
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::GetAssertionCount(int32_t* aResult) {
+  *aResult = gAssertionCount;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDebugImpl::GetIsDebuggerAttached(bool* aResult) {
+  *aResult = false;
+
+#if defined(__OpenBSD__) && defined(MOZ_SANDBOX)
+  // no access to KERN_PROC_PID sysctl when pledge'd
+  return NS_OK;
+#endif
+#if defined(XP_WIN)
+  *aResult = ::IsDebuggerPresent();
+#elif defined(XP_MACOSX) || defined(__DragonFly__) || defined(__FreeBSD__) || \
+    defined(__NetBSD__) || defined(__OpenBSD__)
+  // Specify the info we're looking for
+  int mib[] = {
+    CTL_KERN,
+    KERN_PROC,
+    KERN_PROC_PID,
+    getpid(),
+#  if defined(__NetBSD__) || defined(__OpenBSD__)
+    sizeof(KINFO_PROC),
+    1,
+#  endif
+  };
+  u_int mibSize = sizeof(mib) / sizeof(int);
+
+  KINFO_PROC info;
+  size_t infoSize = sizeof(info);
+  memset(&info, 0, infoSize);
+
+  if (sysctl(mib, mibSize, &info, &infoSize, nullptr, 0)) {
+    // if the call fails, default to false
+    *aResult = false;
+    return NS_OK;
+  }
+
+  if (info.KP_FLAGS & P_TRACED) {
+    *aResult = true;
+  }
+#endif
+
+  return NS_OK;
+}
+
+/* static */
+void nsDebugImpl::SetMultiprocessMode(const char* aDesc) {
+  sMultiprocessDescription = aDesc;
+}
+
+/* static */ const char* nsDebugImpl::GetMultiprocessMode() {
+  return sMultiprocessDescription;
+}
+
+/**
+ * Implementation of the nsDebug methods. Note that this code is
+ * always compiled in, in case some other module that uses it is
+ * compiled with debugging even if this library is not.
+ */
+enum nsAssertBehavior {
+  NS_ASSERT_UNINITIALIZED,
+  NS_ASSERT_WARN,
+  NS_ASSERT_SUSPEND,
+  NS_ASSERT_STACK,
+  NS_ASSERT_TRAP,
+  NS_ASSERT_ABORT,
+  NS_ASSERT_STACK_AND_ABORT
+};
+
+static nsAssertBehavior GetAssertBehavior() {
+  static nsAssertBehavior gAssertBehavior = NS_ASSERT_UNINITIALIZED;
+  if (gAssertBehavior != NS_ASSERT_UNINITIALIZED) {
+    return gAssertBehavior;
+  }
+
+  gAssertBehavior = NS_ASSERT_WARN;
+
+  const char* assertString = PR_GetEnv("XPCOM_DEBUG_BREAK");
+  if (!assertString || !*assertString) {
+    return gAssertBehavior;
+  }
+  if (!strcmp(assertString, "warn")) {
+    return gAssertBehavior = NS_ASSERT_WARN;
+  }
+  if (!strcmp(assertString, "suspend")) {
+    return gAssertBehavior = NS_ASSERT_SUSPEND;
+  }
+  if (!strcmp(assertString, "stack")) {
+    return gAssertBehavior = NS_ASSERT_STACK;
+  }
+  if (!strcmp(assertString, "abort")) {
+    return gAssertBehavior = NS_ASSERT_ABORT;
+  }
+  if (!strcmp(assertString, "trap") || !strcmp(assertString, "break")) {
+    return gAssertBehavior = NS_ASSERT_TRAP;
+  }
+  if (!strcmp(assertString, "stack-and-abort")) {
+    return gAssertBehavior = NS_ASSERT_STACK_AND_ABORT;
+  }
+
+  fprintf(stderr, "Unrecognized value of XPCOM_DEBUG_BREAK\n");
+  return gAssertBehavior;
+}
+
+struct FixedBuffer final : public mozilla::PrintfTarget {
+  FixedBuffer() : curlen(0) { buffer[0] = '\0'; }
+
+  char buffer[764];
+  uint32_t curlen;
+
+  bool append(const char* sp, size_t len) override;
+};
+
+bool FixedBuffer::append(const char* aBuf, size_t aLen) {
+  if (!aLen) {
+    return true;
+  }
+
+  if (curlen + aLen >= sizeof(buffer)) {
+    aLen = sizeof(buffer) - curlen - 1;
+  }
+
+  if (aLen) {
+    memcpy(buffer + curlen, aBuf, aLen);
+    curlen += aLen;
+    buffer[curlen] = '\0';
+  }
+
+  return true;
+}
+
+namespace geckoprofiler::markers {
+
+struct DebugBreakMarker {
+  static constexpr Span<const char> MarkerTypeName() {
+    return MakeStringSpan("DebugBreak");
+  }
+  static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+                                   uint32_t aSeverity,
+                                   const ProfilerString8View& aStr,
+                                   const ProfilerString8View& aExpr,
+                                   const ProfilerString8View& aFile,
+                                   int32_t aLine) {
+    nsAutoCString sevString("WARNING");
+    switch (aSeverity) {
+      case NS_DEBUG_ASSERTION:
+        sevString = "ASSERTION";
+        break;
+
+      case NS_DEBUG_BREAK:
+        sevString = "BREAK";
+        break;
+
+      case NS_DEBUG_ABORT:
+        sevString = "ABORT";
+        break;
+    }
+    aWriter.StringProperty("Severity", sevString);
+    // The 'name' property is searchable on the front-end.
+    if (aStr.Length() != 0) {
+      aWriter.StringProperty("Message", aStr);
+      aWriter.StringProperty("name", aStr);
+    } else if (aExpr.Length() != 0) {
+      aWriter.StringProperty("name", aExpr);
+    }
+    if (aExpr.Length() != 0) {
+      aWriter.StringProperty("Expression", aExpr);
+    }
+    if (aFile.Length() != 0) {
+      aWriter.StringProperty("File", aFile);
+    }
+    if (aLine != 0) {
+      aWriter.IntProperty("Line", aLine);
+    }
+  }
+  static MarkerSchema MarkerTypeDisplay() {
+    using MS = MarkerSchema;
+    MS schema{MS::Location::TimelineOverview, MS::Location::MarkerChart,
+              MS::Location::MarkerTable};
+    schema.SetAllLabels("{marker.data.Severity}: {marker.data.name}");
+    schema.AddKeyFormat("Message", MS::Format::String);
+    schema.AddKeyFormat("Severity", MS::Format::String);
+    schema.AddKeyFormat("Expression", MS::Format::String);
+    schema.AddKeyFormat("File", MS::Format::String);
+    schema.AddKeyFormat("Line", MS::Format::Integer);
+    return schema;
+  }
+};
+
+}  // namespace geckoprofiler::markers
+
+EXPORT_XPCOM_API(void)
+NS_DebugBreak(uint32_t aSeverity, const char* aStr, const char* aExpr,
+              const char* aFile, int32_t aLine) {
+  FixedBuffer nonPIDBuf;
+  FixedBuffer buf;
+  const char* sevString = "WARNING";
+
+  switch (aSeverity) {
+    case NS_DEBUG_ASSERTION:
+      sevString = "###!!! ASSERTION";
+      break;
+
+    case NS_DEBUG_BREAK:
+      sevString = "###!!! BREAK";
+      break;
+
+    case NS_DEBUG_ABORT:
+      sevString = "###!!! ABORT";
+      break;
+
+    default:
+      aSeverity = NS_DEBUG_WARNING;
+  }
+
+  nonPIDBuf.print("%s: ", sevString);
+  if (aStr) {
+    nonPIDBuf.print("%s: ", aStr);
+  }
+  if (aExpr) {
+    nonPIDBuf.print("'%s', ", aExpr);
+  }
+  if (aFile || aLine != -1) {
+    nonPIDBuf.print("file %s:%d", aFile ? aFile : "<unknown>",
+                    aLine != -1 ? aLine : 0);
+  }
+
+  // Print "[PID]" or "[Desc PID]" at the beginning of the message.
+  buf.print("[");
+  if (sMultiprocessDescription) {
+    buf.print("%s ", sMultiprocessDescription);
+  }
+
+  bool isMainthread = (NS_IsMainThreadTLSInitialized() && NS_IsMainThread());
+  PRThread* currentThread = PR_GetCurrentThread();
+  const char* currentThreadName =
+      isMainthread ? "Main Thread" : PR_GetThreadName(currentThread);
+  if (currentThreadName) {
+    buf.print("%" PRIPID ", %s] %s", base::GetCurrentProcId(),
+              currentThreadName, nonPIDBuf.buffer);
+  } else {
+    buf.print("%" PRIPID ", Unnamed thread %p] %s", base::GetCurrentProcId(),
+              currentThread, nonPIDBuf.buffer);
+  }
+
+  // errors on platforms without a debugdlg ring a bell on stderr
+#if !defined(XP_WIN)
+  if (aSeverity != NS_DEBUG_WARNING) {
+    fprintf(stderr, "\07");
+  }
+#endif
+
+#ifdef ANDROID
+  __android_log_print(ANDROID_LOG_INFO, "Gecko", "%s", buf.buffer);
+#endif
+
+  PROFILER_MARKER("NS_DebugBreak", OTHER, MarkerStack::Capture(),
+                  DebugBreakMarker, aSeverity,
+                  ProfilerString8View::WrapNullTerminatedString(aStr),
+                  ProfilerString8View::WrapNullTerminatedString(aExpr),
+                  ProfilerString8View::WrapNullTerminatedString(aFile), aLine);
+
+  // Write the message to stderr unless it's a warning and MOZ_IGNORE_WARNINGS
+  // is set.
+  if (!(PR_GetEnv("MOZ_IGNORE_WARNINGS") && aSeverity == NS_DEBUG_WARNING)) {
+    fprintf(stderr, "%s\n", buf.buffer);
+    fflush(stderr);
+  }
+
+  switch (aSeverity) {
+    case NS_DEBUG_WARNING:
+      return;
+
+    case NS_DEBUG_BREAK:
+      Break(buf.buffer);
+      return;
+
+    case NS_DEBUG_ABORT: {
+      // Updating crash annotations in the child causes us to do IPC. This can
+      // really cause trouble if we're asserting from within IPC code. So we
+      // have to do without the annotations in that case.
+      if (XRE_IsParentProcess()) {
+        // Don't include the PID in the crash report annotation to
+        // allow faceting on crash-stats.mozilla.org.
+        nsCString note("xpcom_runtime_abort(");
+        note += nonPIDBuf.buffer;
+        note += ")";
+        CrashReporter::AppendAppNotesToCrashReport(note);
+        CrashReporter::AnnotateCrashReport(
+            CrashReporter::Annotation::AbortMessage,
+            nsDependentCString(nonPIDBuf.buffer));
+      }
+
+#if defined(DEBUG) && defined(_WIN32)
+      RealBreak();
+#endif
+#if defined(DEBUG)
+      MozWalkTheStack(stderr);
+#endif
+      Abort(buf.buffer);
+      return;
+    }
+  }
+
+  // Now we deal with assertions
+  gAssertionCount++;
+
+  switch (GetAssertBehavior()) {
+    case NS_ASSERT_WARN:
+      return;
+
+    case NS_ASSERT_SUSPEND:
+#ifdef XP_UNIX
+      fprintf(stderr, "Suspending process; attach with the debugger.\n");
+      kill(0, SIGSTOP);
+#else
+      Break(buf.buffer);
+#endif
+      return;
+
+    case NS_ASSERT_STACK:
+      MozWalkTheStack(stderr);
+      return;
+
+    case NS_ASSERT_STACK_AND_ABORT:
+      MozWalkTheStack(stderr);
+      // Fall through to abort
+      [[fallthrough]];
+
+    case NS_ASSERT_ABORT:
+      Abort(buf.buffer);
+      return;
+
+    case NS_ASSERT_TRAP:
+    case NS_ASSERT_UNINITIALIZED:  // Default to "trap" behavior
+      Break(buf.buffer);
+      return;
+  }
+}
+
+static void Abort(const char* aMsg) {
+  NoteIntentionalCrash(XRE_GetProcessTypeString());
+  MOZ_CRASH_UNSAFE(aMsg);
+}
+
+static void RealBreak() {
+#if defined(_WIN32)
+  ::DebugBreak();
+#elif defined(XP_MACOSX)
+  raise(SIGTRAP);
+#elif defined(__GNUC__) && \
+    (defined(__i386__) || defined(__i386) || defined(__x86_64__))
+  asm("int $3");
+#elif defined(__arm__)
+  asm(
+#  ifdef __ARM_ARCH_4T__
+      /* ARMv4T doesn't support the BKPT instruction, so if the compiler target
+       * is ARMv4T, we want to ensure the assembler will understand that ARMv5T
+       * instruction, while keeping the resulting object tagged as ARMv4T.
+       */
+      ".arch armv5t\n"
+      ".object_arch armv4t\n"
+#  endif
+      "BKPT #0");
+#elif defined(__aarch64__)
+  asm("brk #0");
+#elif defined(SOLARIS)
+#  if defined(__i386__) || defined(__i386) || defined(__x86_64__)
+  asm("int $3");
+#  else
+  raise(SIGTRAP);
+#  endif
+#else
+#  warning do not know how to break on this platform
+#endif
+}
+
+// Abort() calls this function, don't call it!
+static void Break(const char* aMsg) {
+#if defined(_WIN32)
+  static int ignoreDebugger;
+  if (!ignoreDebugger) {
+    const char* shouldIgnoreDebugger = getenv("XPCOM_DEBUG_DLG");
+    ignoreDebugger =
+        1 + (shouldIgnoreDebugger && !strcmp(shouldIgnoreDebugger, "1"));
+  }
+  if ((ignoreDebugger == 2) || !::IsDebuggerPresent()) {
+    DWORD code = IDRETRY;
+
+    /* Create the debug dialog out of process to avoid the crashes caused by
+     * Windows events leaking into our event loop from an in process dialog.
+     * We do this by launching windbgdlg.exe (built in xpcom/windbgdlg).
+     * See http://bugzilla.mozilla.org/show_bug.cgi?id=54792
+     */
+    PROCESS_INFORMATION pi;
+    STARTUPINFOW si;
+    wchar_t executable[MAX_PATH];
+    wchar_t* pName;
+
+    memset(&pi, 0, sizeof(pi));
+
+    memset(&si, 0, sizeof(si));
+    si.cb = sizeof(si);
+    si.wShowWindow = SW_SHOW;
+
+    // 2nd arg of CreateProcess is in/out
+    wchar_t* msgCopy = (wchar_t*)_alloca((strlen(aMsg) + 1) * sizeof(wchar_t));
+    wcscpy(msgCopy, NS_ConvertUTF8toUTF16(aMsg).get());
+
+    if (GetModuleFileNameW(GetModuleHandleW(L"xpcom.dll"), executable,
+                           MAX_PATH) &&
+        (pName = wcsrchr(executable, '\\')) != nullptr &&
+        wcscpy(pName + 1, L"windbgdlg.exe") &&
+        CreateProcessW(executable, msgCopy, nullptr, nullptr, false,
+                       DETACHED_PROCESS | NORMAL_PRIORITY_CLASS, nullptr,
+                       nullptr, &si, &pi)) {
+      WaitForSingleObject(pi.hProcess, INFINITE);
+      GetExitCodeProcess(pi.hProcess, &code);
+      CloseHandle(pi.hProcess);
+      CloseHandle(pi.hThread);
+    }
+
+    switch (code) {
+      case IDABORT:
+        // This should exit us
+        raise(SIGABRT);
+        // If we are ignored exit this way..
+        _exit(3);
+
+      case IDIGNORE:
+        return;
+    }
+  }
+
+  RealBreak();
+#elif defined(XP_MACOSX)
+  /* Note that we put this Mac OS X test above the GNUC/x86 test because the
+   * GNUC/x86 test is also true on Intel Mac OS X and we want the PPC/x86
+   * impls to be the same.
+   */
+  RealBreak();
+#elif defined(__GNUC__) && \
+    (defined(__i386__) || defined(__i386) || defined(__x86_64__))
+  RealBreak();
+#elif defined(__arm__) || defined(__aarch64__)
+  RealBreak();
+#elif defined(SOLARIS)
+  RealBreak();
+#else
+#  warning do not know how to break on this platform
+#endif
+}
+
+nsresult nsDebugImpl::Create(const nsIID& aIID, void** aInstancePtr) {
+  static const nsDebugImpl* sImpl;
+
+  if (!sImpl) {
+    sImpl = new nsDebugImpl();
+  }
+
+  return const_cast<nsDebugImpl*>(sImpl)->QueryInterface(aIID, aInstancePtr);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+nsresult NS_ErrorAccordingToNSPR() {
+  PRErrorCode err = PR_GetError();
+  switch (err) {
+    case PR_OUT_OF_MEMORY_ERROR:
+      return NS_ERROR_OUT_OF_MEMORY;
+    case PR_WOULD_BLOCK_ERROR:
+      return NS_BASE_STREAM_WOULD_BLOCK;
+    case PR_FILE_NOT_FOUND_ERROR:
+      return NS_ERROR_FILE_NOT_FOUND;
+    case PR_READ_ONLY_FILESYSTEM_ERROR:
+      return NS_ERROR_FILE_READ_ONLY;
+    case PR_NOT_DIRECTORY_ERROR:
+      return NS_ERROR_FILE_NOT_DIRECTORY;
+    case PR_IS_DIRECTORY_ERROR:
+      return NS_ERROR_FILE_IS_DIRECTORY;
+    case PR_LOOP_ERROR:
+      return NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
+    case PR_FILE_EXISTS_ERROR:
+      return NS_ERROR_FILE_ALREADY_EXISTS;
+    case PR_FILE_IS_LOCKED_ERROR:
+      return NS_ERROR_FILE_IS_LOCKED;
+    case PR_FILE_TOO_BIG_ERROR:
+      return NS_ERROR_FILE_TOO_BIG;
+    case PR_NO_DEVICE_SPACE_ERROR:
+      return NS_ERROR_FILE_NO_DEVICE_SPACE;
+    case PR_NAME_TOO_LONG_ERROR:
+      return NS_ERROR_FILE_NAME_TOO_LONG;
+    case PR_DIRECTORY_NOT_EMPTY_ERROR:
+      return NS_ERROR_FILE_DIR_NOT_EMPTY;
+    case PR_NO_ACCESS_RIGHTS_ERROR:
+      return NS_ERROR_FILE_ACCESS_DENIED;
+    default:
+      return NS_ERROR_FAILURE;
+  }
+}
+
+void NS_ABORT_OOM(size_t aSize) {
+  CrashReporter::AnnotateOOMAllocationSize(aSize);
+  MOZ_CRASH("OOM");
+}