llvm-project/lldb/test/forward/TestForwardDeclaration.py
Greg Clayton 54979cddda Fixed the "expression" command object to use the StackFrame::GetValueForExpressionPath()
function and also hooked up better error reporting for when things fail.

Fixed issues with trying to display children of pointers when none are
supposed to be shown (no children for function pointers, and more like this).
This was causing child value objects to be made that were correctly firing
an assertion.

llvm-svn: 121841
2010-12-15 05:08:08 +00:00

66 lines
2.4 KiB
Python

"""Test that forward declaration of a data structure gets resolved correctly."""
import os, time
import unittest2
import lldb
from lldbtest import *
class ForwardDeclarationTestCase(TestBase):
mydir = "forward"
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
def test_with_dsym_and_run_command(self):
"""Display *bar_ptr when stopped on a function with forward declaration of struct bar."""
self.buildDsym()
self.forward_declaration()
# rdar://problem/8648070
# 'expression *bar_ptr' seg faults
# rdar://problem/8546815
# './dotest.py -v -t forward' fails for test_with_dwarf_and_run_command
def test_with_dwarf_and_run_command(self):
"""Display *bar_ptr when stopped on a function with forward declaration of struct bar."""
self.buildDwarf()
self.forward_declaration()
def forward_declaration(self):
"""Display *bar_ptr when stopped on a function with forward declaration of struct bar."""
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.
self.expect("breakpoint set -n foo", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: name = 'foo', locations = 1")
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['state is stopped',
'stop reason = breakpoint'])
# The breakpoint should have a hit count of 1.
self.expect("breakpoint list", 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 -t *bar_ptr", VARIABLES_DISPLAYED_CORRECTLY,
substrs = ['(struct bar) *bar_ptr = ',
'(int) a = 1',
'(int) b = 2'])
# And so should this.
self.expect("expression *bar_ptr", VARIABLES_DISPLAYED_CORRECTLY,
substrs = ['(struct bar)',
'(int) a = 1',
'(int) b = 2'])
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()