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libstdc++: Fix GDB Xmethod for std::shared_ptr::use_count() [PR109064]

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libstdc++-v3/ChangeLog:

	PR libstdc++/109064
	* python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
	Remove self-recursion in __init__. Add missing _supports.
	* testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
	and unique().
This commit is contained in:
Jonathan Wakely 2023-03-10 11:06:25 +00:00
parent e3f8dfcd88
commit 37c8a083d4
2 changed files with 11 additions and 1 deletions
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5
libstdc++-v3/python/libstdcxx/v6/xmethods.py
View file

@ -730,7 +730,7 @@ class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
"Implements std::shared_ptr<T>::use_count()"
def __init__(self, elem_type):
SharedPtrUseCountWorker.__init__(self, elem_type)
pass
def get_arg_types(self):
return None
@ -738,6 +738,9 @@ class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
def get_result_type(self, obj):
return gdb.lookup_type('long')
def _supports(self, method_name):
return True
def __call__(self, obj):
refcounts = obj['_M_refcount']['_M_pi']
return refcounts['_M_use_count'] if refcounts else 0

7
libstdc++-v3/testsuite/libstdc++-xmethods/shared_ptr.cc
View file

@ -37,6 +37,8 @@ main ()
std::shared_ptr<x_struct[3]> s(new x_struct[2]{ {92}, {115} });
auto qq = q;
// { dg-final { note-test *p 10 } }
// { dg-final { regexp-test p.get() 0x.* } }
@ -67,6 +69,11 @@ main ()
// { dg-final { whatis-test s.get() "x_struct \*" } }
// { dg-final { whatis-test s\[1].y int } }
// { dg-final { note-test p.use_count() 1 } }
// { dg-final { note-test p.unique() true } }
// { dg-final { note-test q.use_count() 2 } }
// { dg-final { note-test q.unique() false } }
return 0; // Mark SPOT
}