| Index: runtime/vm/signal_handler_linux.cc | 
| diff --git a/runtime/vm/signal_handler_linux.cc b/runtime/vm/signal_handler_linux.cc | 
| index 45fa50de5b6ae4c90eb7b0c144f5ef39496d074a..b49f90a767826b23394fb110b484797c1c2ee2c3 100644 | 
| --- a/runtime/vm/signal_handler_linux.cc | 
| +++ b/runtime/vm/signal_handler_linux.cc | 
| @@ -72,7 +72,7 @@ uintptr_t SignalHandler::GetCStackPointer(const mcontext_t& mcontext) { | 
|  | 
| uintptr_t SignalHandler::GetDartStackPointer(const mcontext_t& mcontext) { | 
| #if defined(TARGET_ARCH_ARM64) && !defined(USING_SIMULATOR) | 
| -  return static_cast<uintptr_t>(mcontext.regs[18]); | 
| +  return static_cast<uintptr_t>(mcontext.regs[19]); | 
| #else | 
| return GetCStackPointer(mcontext); | 
| #endif | 
|  |