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   1 """
   2 Test basic std::weak_ptr functionality.
   3 """
   4
   5 from lldbsuite.test.decorators import *
   6 from lldbsuite.test.lldbtest import *
   7 from lldbsuite.test import lldbutil
   8
   9 class TestSharedPtr(TestBase):
  10
  11     mydir = TestBase.compute_mydir(__file__)
  12
  13     @add_test_categories(["libc++"])
  14     @skipIf(compiler=no_match("clang"))
  15     def test(self):
  16         self.build()
  17
  18         lldbutil.run_to_source_breakpoint(self,
  19             "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
  20
  21         self.runCmd("settings set target.import-std-module true")
  22
  23         self.expect("expr (int)*w.lock()", substrs=['(int) $0 = 3'])
  24         self.expect("expr (int)(*w.lock() = 5)", substrs=['(int) $1 = 5'])
  25         self.expect("expr (int)*w.lock()", substrs=['(int) $2 = 5'])
  26         self.expect("expr w.use_count()", substrs=['(long) $3 = 1'])
  27         self.expect("expr w.reset()")
  28         self.expect("expr w.use_count()", substrs=['(long) $4 = 0'])
  29