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"""
Make sure the getting a variable path works and doesn't crash.
"""
import lldb
import lldbsuite.test.lldbutil as lldbutil
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
class TestVarPath(TestBase):
# If your test case doesn't stress debug info, then
# set this to true. That way it won't be run once for
# each debug info format.
NO_DEBUG_INFO_TESTCASE = True
def test_frame_var(self):
self.build()
self.do_test()
def verify_point(self, frame, var_name, var_typename, x_value, y_value):
v = frame.GetValueForVariablePath(var_name)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (var_name))
self.assertEqual(
v.GetType().GetName(),
var_typename,
"Make sure '%s' has type '%s'" % (var_name, var_typename),
)
if "*" in var_typename:
valid_prefix = var_name + "->"
invalid_prefix = var_name + "."
else:
valid_prefix = var_name + "."
invalid_prefix = var_name + "->"
valid_x_path = valid_prefix + "x"
valid_y_path = valid_prefix + "y"
invalid_x_path = invalid_prefix + "x"
invalid_y_path = invalid_prefix + "y"
invalid_m_path = invalid_prefix + "m"
v = frame.GetValueForVariablePath(valid_x_path)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (valid_x_path))
self.assertEqual(
v.GetValue(),
str(x_value),
"Make sure '%s' has a value of %i" % (valid_x_path, x_value),
)
self.assertEqual(
v.GetType().GetName(),
"int",
"Make sure '%s' has type 'int'" % (valid_x_path),
)
v = frame.GetValueForVariablePath(invalid_x_path)
self.assertTrue(
v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_x_path)
)
v = frame.GetValueForVariablePath(valid_y_path)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (valid_y_path))
self.assertEqual(
v.GetValue(),
str(y_value),
"Make sure '%s' has a value of %i" % (valid_y_path, y_value),
)
self.assertEqual(
v.GetType().GetName(),
"int",
"Make sure '%s' has type 'int'" % (valid_y_path),
)
v = frame.GetValueForVariablePath(invalid_y_path)
self.assertTrue(
v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_y_path)
)
v = frame.GetValueForVariablePath(invalid_m_path)
self.assertTrue(
v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_m_path)
)
def do_test(self):
(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
self, "// Set a breakpoint here", lldb.SBFileSpec("main.cpp")
)
frame = thread.GetFrameAtIndex(0)
v = frame.GetValueForVariablePath("no_such_variable")
self.assertTrue(
v.GetError().Fail(), "Make sure we don't find 'no_such_variable'"
)
# Test an instance
self.verify_point(frame, "pt", "Point", 1, 2)
# Test a pointer
self.verify_point(frame, "pt_ptr", "Point *", 3030, 4040)
# Test using a pointer as an array
self.verify_point(frame, "pt_ptr[-1]", "Point", 1010, 2020)
self.verify_point(frame, "pt_ptr[0]", "Point", 3030, 4040)
self.verify_point(frame, "pt_ptr[1]", "Point", 5050, 6060)
# Test arrays
v = frame.GetValueForVariablePath("points")
self.assertSuccess(v.GetError(), "Make sure we find 'points'")
self.verify_point(frame, "points[0]", "Point", 1010, 2020)
self.verify_point(frame, "points[1]", "Point", 3030, 4040)
self.verify_point(frame, "points[2]", "Point", 5050, 6060)
v = frame.GetValueForVariablePath("points[0]+5")
self.assertTrue(
v.GetError().Fail(),
"Make sure we do not ignore characters between ']' and the end",
)
# Test a reference
self.verify_point(frame, "pt_ref", "Point &", 1, 2)
v = frame.GetValueForVariablePath("pt_sp")
self.assertSuccess(v.GetError(), "Make sure we find 'pt_sp'")
# Make sure we don't crash when looking for non existant child
# in type with synthetic children. This used to cause a crash.
if not self.isAArch64Windows():
v = frame.GetValueForVariablePath("pt_sp->not_valid_child")
self.assertTrue(
v.GetError().Fail(), "Make sure we don't find 'pt_sp->not_valid_child'"
)
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