1 files changed, 82 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.cp/pretty-print.py b/gdb/testsuite/gdb.cp/pretty-print.py
new file mode 100644
index 0000000..6ee8d71
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/pretty-print.py
@@ -0,0 +1,82 @@
+# Copyright (C) 2008-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Reduced copy of /usr/share/gcc-15/python/libstdcxx/v6/printers.py.
+
+import gdb
+import gdb.printing
+import gdb.types
+
+
+class FilteringTypePrinter(object):
+
+    def __init__(self, template, name, targ1=None):
+        self._template = template
+        self.name = name
+        self._targ1 = targ1
+        self.enabled = True
+
+    class _recognizer(object):
+        def __init__(self, template, name, targ1):
+            self._template = template
+            self.name = name
+            self._targ1 = targ1
+            self._type_obj = None
+
+        def recognize(self, type_obj):
+            if type_obj.tag is None:
+                return None
+
+            if self._type_obj is None:
+                if self._targ1 is not None:
+                    s = "{}<{}".format(self._template, self._targ1)
+                    if not type_obj.tag.startswith(s):
+                        return None
+                elif not type_obj.tag.startswith(self._template):
+                    return None
+
+                try:
+                    self._type_obj = gdb.lookup_type(self.name).strip_typedefs()
+                except:
+                    pass
+
+            if self._type_obj is None:
+                return None
+
+            t1 = gdb.types.get_basic_type(self._type_obj)
+            t2 = gdb.types.get_basic_type(type_obj)
+            if t1 == t2:
+                return self.name
+
+            if self._template.split("::")[-1] == "basic_string":
+                s1 = self._type_obj.tag.replace("__cxx11::", "")
+                s2 = type_obj.tag.replace("__cxx11::", "")
+                if s1 == s2:
+                    return self.name
+
+            return None
+
+    def instantiate(self):
+        return self._recognizer(self._template, self.name, self._targ1)
+
+
+def add_one_type_printer(obj, template, name, targ1=None):
+    printer = FilteringTypePrinter("std::" + template, "std::" + name, targ1)
+    gdb.types.register_type_printer(obj, printer)
+
+
+def register_type_printers(obj):
+    for ch in (("", "char"),):
+        add_one_type_printer(obj, "__cxx11::basic_string", ch[0] + "string", ch[1])