[binutils-gdb] btrace: do not allow moving running threads with 'record goto'

[Markus Metzger]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9a8c16ee84879c8f1abbc7d9b8f85a27d74288c1

commit 9a8c16ee84879c8f1abbc7d9b8f85a27d74288c1
Author: Markus Metzger <markus.t.metzger@intel.com>
Date:   Wed Aug 13 14:38:10 2025 +0000

    btrace: do not allow moving running threads with 'record goto'
    
    With asynchronous commands, a thread can be replaying in the background
    while it is being moved using the 'record goto' command in the foreground.
    
    Do not allow that.

Diff:
---
 gdb/record-btrace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 1534b76de77..6308808f413 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -2847,6 +2847,9 @@ record_btrace_set_replay (struct thread_info *tp,
 {
   struct btrace_thread_info *btinfo;
 
+  if (tp->state == THREAD_RUNNING)
+    error (_("You cannot do that while the thread is running."));
+
   btinfo = &tp->btrace;
 
   if (it == NULL)