[PATCH] Don't allow multiple request registrations in DAP

[Tom Tromey <tromey@adacore.com>]

This changes the DAP code to check that a given request or capability
is only registered a single time.  This is just a precaution against
accidentally introducing a second definition of a request somewhere.
---
 gdb/python/lib/gdb/dap/server.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gdb/python/lib/gdb/dap/server.py b/gdb/python/lib/gdb/dap/server.py
index 7cc5a4681ee..ba139412b90 100644
--- a/gdb/python/lib/gdb/dap/server.py
+++ b/gdb/python/lib/gdb/dap/server.py
@@ -354,6 +354,7 @@ def request(
             cmd = _check_not_running(cmd)
 
         global _commands
+        assert name not in _commands
         _commands[name] = cmd
         return cmd
 
@@ -366,6 +367,7 @@ def capability(name, value=True):
 
     def wrap(func):
         global _capabilities
+        assert name not in _capabilities
         _capabilities[name] = value
         return func
 
-- 
2.43.0