[futex] Allow debugger to break in the middle of a futexWait

src/futex-emulation.cc

Index: src/futex-emulation.cc
diff --git a/src/futex-emulation.cc b/src/futex-emulation.cc
index b0e514e8af2a11c8094f2438fa651ed4172fb142..9cc739f7bc4b4997c373501064e3f85b6533041f 100644
--- a/src/futex-emulation.cc
+++ b/src/futex-emulation.cc
@@ -9,6 +9,7 @@
 #include "src/base/macros.h"
 #include "src/base/platform/time.h"
 #include "src/conversions.h"
+#include "src/debug/debug.h"
 #include "src/handles-inl.h"
 #include "src/isolate.h"
 #include "src/list-inl.h"
@@ -141,6 +142,8 @@ Object* FutexEmulation::Wait(Isolate* isolate,
     // notification will wake up the condition variable. node->waiting() will
     // be false, so we'll loop and then check interrupts.
     if (interrupted) {
+      EnableBreakInNonDebuggable enabler(isolate->debug(), true);
+
       Object* interrupt_object = isolate->stack_guard()->HandleInterrupts();
       if (interrupt_object->IsException()) {
         result = interrupt_object;