1 files changed, 16 insertions, 0 deletions
diff --git a/deps/v8/src/base/logging.cc b/deps/v8/src/base/logging.cc
index 740f1fa987..13fbec0e90 100644
--- a/deps/v8/src/base/logging.cc
+++ b/deps/v8/src/base/logging.cc
@@ -17,8 +17,12 @@ namespace base {
 
 namespace {
 
+void DefaultDcheckHandler(const char* file, int line, const char* message);
+
 void (*g_print_stack_trace)() = nullptr;
 
+void (*g_dcheck_function)(const char*, int, const char*) = DefaultDcheckHandler;
+
 void PrettyPrintChar(std::ostream& os, int ch) {
   switch (ch) {
 #define CHAR_PRINT_CASE(ch) \
@@ -48,12 +52,20 @@ void PrettyPrintChar(std::ostream& os, int ch) {
   }
 }
 
+void DefaultDcheckHandler(const char* file, int line, const char* message) {
+  V8_Fatal(file, line, "Debug check failed: %s.", message);
+}
+
 }  // namespace
 
 void SetPrintStackTrace(void (*print_stack_trace)()) {
   g_print_stack_trace = print_stack_trace;
 }
 
+void SetDcheckFunction(void (*dcheck_function)(const char*, int, const char*)) {
+  g_dcheck_function = dcheck_function ? dcheck_function : &DefaultDcheckHandler;
+}
+
 // Define specialization to pretty print characters (escaping non-printable
 // characters) and to print c strings as pointers instead of strings.
 #define DEFINE_PRINT_CHECK_OPERAND_CHAR(type)                                \
@@ -125,3 +137,7 @@ void V8_Fatal(const char* file, int line, const char* format, ...) {
   fflush(stderr);
   v8::base::OS::Abort();
 }
+
+void V8_Dcheck(const char* file, int line, const char* message) {
+  v8::base::g_dcheck_function(file, line, message);
+}