lldb/test/API/functionalities/load_lazy/TestLoadUsingLazyBind.py

   1 """
   2 Test that SBProcess.LoadImageUsingPaths uses RTLD_LAZY
   3 """
   4
   5
   6 import os
   7 import shutil
   8 import lldb
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class LoadUsingLazyBind(TestBase):
  15     NO_DEBUG_INFO_TESTCASE = True
  16
  17     @skipIfRemote
  18     @skipIfWindows  # The Windows platform doesn't implement DoLoadImage.
  19     @skipIf(oslist=["linux"], archs=["arm"])  # Fails on arm/linux
  20     # Failing for unknown reasons on Linux, see
  21     # https://bugs.llvm.org/show_bug.cgi?id=49656.
  22     def test_load_using_lazy_bind(self):
  23         """Test that we load using RTLD_LAZY"""
  24
  25         self.build()
  26         wd = os.path.realpath(self.getBuildDir())
  27
  28         def make_lib_name(name):
  29             return (
  30                 self.platformContext.shlib_prefix
  31                 + name
  32                 + "."
  33                 + self.platformContext.shlib_extension
  34             )
  35
  36         def make_lib_path(name):
  37             libpath = os.path.join(wd, make_lib_name(name))
  38             self.assertTrue(os.path.exists(libpath))
  39             return libpath
  40
  41         libt2_0 = make_lib_path("t2_0")
  42         libt2_1 = make_lib_path("t2_1")
  43
  44         # Overwrite t2_0 with t2_1 to delete the definition of `use`.
  45         shutil.copy(libt2_1, libt2_0)
  46
  47         # Launch a process and break
  48         (target, process, thread, _) = lldbutil.run_to_source_breakpoint(
  49             self, "break here", lldb.SBFileSpec("main.cpp"), extra_images=["t1"]
  50         )
  51
  52         # Load libt1; should fail unless we use RTLD_LAZY
  53         error = lldb.SBError()
  54         lib_spec = lldb.SBFileSpec(make_lib_name("t1"))
  55         paths = lldb.SBStringList()
  56         paths.AppendString(wd)
  57         out_spec = lldb.SBFileSpec()
  58         token = process.LoadImageUsingPaths(lib_spec, paths, out_spec, error)
  59         self.assertNotEqual(token, lldb.LLDB_INVALID_IMAGE_TOKEN, "Got a valid token")
  60
  61         # Calling `f1()` should return 5.
  62         frame = thread.GetFrameAtIndex(0)
  63         val = frame.EvaluateExpression("f1()")
  64         self.assertTrue(val.IsValid())
  65         self.assertEqual(val.GetValueAsSigned(-1), 5)