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"""Test that forward declaration of a data structure gets resolved correctly."""
from __future__ import print_function
import os
import time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class ForwardDeclarationTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def test_and_run_command(self):
"""Display *bar_ptr when stopped on a function with forward declaration of struct bar."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break inside the foo function which takes a bar_ptr argument.
lldbutil.run_break_set_by_symbol(
self, "foo", num_expected_locations=1, sym_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# The breakpoint should have a hit count of 1.
self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
substrs=[' resolved, hit count = 1'])
# This should display correctly.
# Note that the member fields of a = 1 and b = 2 is by design.
self.expect(
"frame variable --show-types *bar_ptr",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=[
'(bar) *bar_ptr = ',
'(int) a = 1',
'(int) b = 2'])
# And so should this.
self.expect(
"expression --show-types -- *bar_ptr",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=[
'(bar)',
'(int) a = 1',
'(int) b = 2'])
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