[binutils-gdb] Don't explicitly set clone child ptrace options

[binutils-gdb] Don't explicitly set clone child ptrace options

[Pedro Alves]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b7096df235486ce718c2a0bfda8a0db074dcb671

commit b7096df235486ce718c2a0bfda8a0db074dcb671
Author: Pedro Alves <pedro@palves.net>
Date:   Fri Oct 14 20:17:36 2022 +0100

    Don't explicitly set clone child ptrace options
    
    linux_handle_extended_wait calls target_post_attach if we're handling
    a PTRACE_EVENT_CLONE, and libthread_db.so isn't active.
    target_post_attach just calls linux_init_ptrace_procfs to set the
    lwp's ptrace options.  However, this is completely unnecessary,
    because, as man ptrace [1] says, options are inherited:
    
      "Flags are inherited by new tracees created and "auto-attached" via
       active PTRACE_O_TRACEFORK, PTRACE_O_TRACEVFORK, or PTRACE_O_TRACECLONE
       options."
    
    This removes the unnecessary call.
    
    [1] - https://man7.org/linux/man-pages/man2/ptrace.2.html
    
    Approved-By: Simon Marchi <simon.marchi@efficios.com>
    Change-Id: I533eaa60b700f7e40760311fc0d344d0b3f19a78

Diff:
---
 gdb/linux-nat.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index f4f7aa81845..0b3c143382b 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -1912,7 +1912,6 @@ linux_handle_extended_wait (struct lwp_info *lp, int status)
 	    {
 	      /* The process is not using thread_db.  Add the LWP to
 		 GDB's list.  */
-	      target_post_attach (new_lp->ptid.lwp ());
 	      add_thread (linux_target, new_lp->ptid);
 	    }