[PATCH] libstdc++: Fix parameter name in map/set printer num_children

[david.faure@kdab.com]

From: David Faure <david.faure@kdab.com>

StdMapPrinter.num_children and StdSetPrinter.num_children name their
parameter 'slf' but refer to 'self' in the body, so any call raises
"NameError: name 'self' is not defined".

GDB does not call num_children for a plain 'print', which is why this
went unnoticed, but printers that delegate to these ones do hit it.
For instance KDevelop's QMap pretty-printer forwards to StdMapPrinter,
and fails with the above error on every Qt 6 QMap since these methods
were added in commit de124ffe1439.

libstdc++-v3/ChangeLog

	* python/libstdcxx/v6/printers.py (StdMapPrinter.num_children):
	Fix parameter name.
	(StdSetPrinter.num_children): Likewise.

Signed-off-by: David Faure <david.faure@kdab.com>
---
 libstdc++-v3/python/libstdcxx/v6/printers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/python/libstdcxx/v6/printers.py b/libstdc++-v3/python/libstdcxx/v6/printers.py
index be7e7a2..eff4b72 100644
--- a/libstdc++-v3/python/libstdcxx/v6/printers.py
+++ b/libstdc++-v3/python/libstdcxx/v6/printers.py
@@ -908,7 +908,7 @@ class StdMapPrinter(printer_base):
         node = lookup_node_type('_Rb_tree_node', self._val.type).pointer()
         return self._iter(RbtreeIterator(self._val), node)
 
-    def num_children(slf):
+    def num_children(self):
         return len(RbtreeIterator(self._val))
 
     def display_hint(self):
@@ -950,7 +950,7 @@ class StdSetPrinter(printer_base):
         node = lookup_node_type('_Rb_tree_node', self._val.type).pointer()
         return self._iter(RbtreeIterator(self._val), node)
 
-    def num_children(slf):
+    def num_children(self):
         return len(RbtreeIterator(self._val))
 
 class StdBitsetPrinter(printer_base):
-- 
2.55.0