Revert Break into the debugger on panic (129019)

Author: ChrisDenton

library/std/src/panicking.rs

@@ -23,8 +23,8 @@ use crate::mem::{self, ManuallyDrop};
 usecrate::panic::{BacktraceStyle,PanicHookInfo};
 usecrate::sync::atomic::{AtomicBool,Ordering};
 usecrate::sync::{PoisonError,RwLock};
+usecrate::sys::backtrace;
 usecrate::sys::stdio::panic_output;
-usecrate::sys::{backtrace, dbg};
 usecrate::{fmt, intrinsics, process, thread};
 
 // Binary interface to the panic runtime that the standard library depends on.
@@ -859,29 +859,13 @@ pub fn rust_panic_without_hook(payload: Box<dyn Any + Send>) -> ! {
 #[cfg_attr(not(test), rustc_std_internal_symbol)]
 #[cfg(not(feature = "panic_immediate_abort"))]
 fnrust_panic(msg:&mutdynPanicPayload) -> ! {
-// Break into the debugger if it is attached.
-// The return value is not currently used.
-//
-// This function isn't used anywhere else, and
-// using inside `#[panic_handler]` doesn't seem
-// to count, so a warning is issued.
-let _ = dbg::breakpoint_if_debugging();
-
 let code = unsafe{__rust_start_panic(msg)};
 rtabort!("failed to initiate panic, error {code}")
 }
 
 #[cfg_attr(not(test), rustc_std_internal_symbol)]
 #[cfg(feature = "panic_immediate_abort")]
 fnrust_panic(_:&mutdynPanicPayload) -> ! {
-// Break into the debugger if it is attached.
-// The return value is not currently used.
-//
-// This function isn't used anywhere else, and
-// using inside `#[panic_handler]` doesn't seem
-// to count, so a warning is issued.
-let _ = dbg::breakpoint_if_debugging();
-
 unsafe{
 crate::intrinsics::abort();
 }

library/std/src/sys/dbg.rs

@@ -11,7 +11,6 @@ mod personality;
 pubmod anonymous_pipe;
 pubmod backtrace;
 pubmod cmath;
-pubmod dbg;
 pubmod exit_guard;
 pubmod os_str;
 pubmod path;