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"""Test breakpoint by file/line number; and list variables with array types."""
from __future__ import print_function
import os
import time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ArrayTypesTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number('main.c', '// Set break point at this line.')
def test_and_run_command(self):
"""Test 'frame variable var_name' on some variables with array types."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self, "main.c", self.line, num_expected_locations=1, loc_exact=False)
self.runCmd("run", RUN_SUCCEEDED)
# The test suite sometimes shows that the process has exited without stopping.
#
# CC=clang ./dotest.py -v -t array_types
# ...
# Process 76604 exited with status = 0 (0x00000000)
self.runCmd("process status")
# 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'])
# Issue 'variable list' command on several array-type variables.
self.expect(
"frame variable --show-types strings",
VARIABLES_DISPLAYED_CORRECTLY,
startstr='(char *[4])',
substrs=[
'(char *) [0]',
'(char *) [1]',
'(char *) [2]',
'(char *) [3]',
'Hello',
'Hola',
'Bonjour',
'Guten Tag'])
self.expect(
"frame variable --show-types --raw -- char_16",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=[
'(char) [0]',
'(char) [15]'])
self.expect(
"frame variable --show-types ushort_matrix",
VARIABLES_DISPLAYED_CORRECTLY,
startstr='(unsigned short [2][3])')
self.expect(
"frame variable --show-types long_6",
VARIABLES_DISPLAYED_CORRECTLY,
startstr='(long [6])')
@add_test_categories(['pyapi'])
def test_and_python_api(self):
"""Use Python APIs to inspect variables with array types."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation("main.c", self.line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
# Sanity check the print representation of breakpoint.
bp = str(breakpoint)
self.expect(bp, msg="Breakpoint looks good", exe=False,
substrs=["file = 'main.c'",
"line = %d" % self.line,
"locations = 1"])
self.expect(
bp,
msg="Breakpoint is not resolved as yet",
exe=False,
matching=False,
substrs=["resolved = 1"])
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# Sanity check the print representation of process.
proc = str(process)
self.expect(proc, msg="Process looks good", exe=False,
substrs=["state = stopped",
"executable = a.out"])
# The stop reason of the thread should be breakpoint.
thread = lldbutil.get_stopped_thread(
process, lldb.eStopReasonBreakpoint)
self.assertIsNotNone(thread)
# Sanity check the print representation of thread.
thr = str(thread)
# TODO(zturner): Whether the TID is printed in hex or decimal should be controlled by a setting,
# and this test should read the value of the setting. This check is currently hardcoded to
# match the check in Core/FormatEntity.cpp in the function FormatEntity::Format() for
# the Entry::Type::ThreadID case of the switch statement.
if self.getPlatform() == "linux" or self.getPlatform() == "freebsd":
tidstr = "tid = %u" % thread.GetThreadID()
else:
tidstr = "tid = 0x%4.4x" % thread.GetThreadID()
self.expect(
thr,
"Thread looks good with stop reason = breakpoint",
exe=False,
substrs=[tidstr])
# The breakpoint should have a hit count of 1.
self.assertEqual(breakpoint.GetHitCount(), 1, BREAKPOINT_HIT_ONCE)
# The breakpoint should be resolved by now.
bp = str(breakpoint)
self.expect(bp, "Breakpoint looks good and is resolved", exe=False,
substrs=["file = 'main.c'",
"line = %d" % self.line,
"locations = 1"])
# Sanity check the print representation of frame.
frame = thread.GetFrameAtIndex(0)
frm = str(frame)
self.expect(
frm,
"Frame looks good with correct index %d" %
frame.GetFrameID(),
exe=False,
substrs=[
"#%d" %
frame.GetFrameID()])
# Lookup the "strings" string array variable and sanity check its print
# representation.
variable = frame.FindVariable("strings")
var = str(variable)
self.expect(
var,
"Variable for 'strings' looks good with correct name",
exe=False,
substrs=[
"%s" %
variable.GetName()])
self.DebugSBValue(variable)
self.assertTrue(variable.GetNumChildren() == 4,
"Variable 'strings' should have 4 children")
child3 = variable.GetChildAtIndex(3)
self.DebugSBValue(child3)
self.assertTrue(child3.GetSummary() == '"Guten Tag"',
'strings[3] == "Guten Tag"')
# Lookup the "char_16" char array variable.
variable = frame.FindVariable("char_16")
self.DebugSBValue(variable)
self.assertTrue(variable.GetNumChildren() == 16,
"Variable 'char_16' should have 16 children")
# Lookup the "ushort_matrix" ushort[] array variable.
# Notice the pattern of int(child0_2.GetValue(), 0). We pass a
# base of 0 so that the proper radix is determined based on the contents
# of the string. Same applies to long().
variable = frame.FindVariable("ushort_matrix")
self.DebugSBValue(variable)
self.assertTrue(variable.GetNumChildren() == 2,
"Variable 'ushort_matrix' should have 2 children")
child0 = variable.GetChildAtIndex(0)
self.DebugSBValue(child0)
self.assertTrue(child0.GetNumChildren() == 3,
"Variable 'ushort_matrix[0]' should have 3 children")
child0_2 = child0.GetChildAtIndex(2)
self.DebugSBValue(child0_2)
self.assertTrue(int(child0_2.GetValue(), 0) == 3,
"ushort_matrix[0][2] == 3")
# Lookup the "long_6" char array variable.
variable = frame.FindVariable("long_6")
self.DebugSBValue(variable)
self.assertTrue(variable.GetNumChildren() == 6,
"Variable 'long_6' should have 6 children")
child5 = variable.GetChildAtIndex(5)
self.DebugSBValue(child5)
self.assertTrue(int(child5.GetValue(), 0) == 6,
"long_6[5] == 6")
# Last, check that "long_6" has a value type of eValueTypeVariableLocal
# and "argc" has eValueTypeVariableArgument.
from lldbsuite.test.lldbutil import value_type_to_str
self.assertTrue(
variable.GetValueType() == lldb.eValueTypeVariableLocal,
"Variable 'long_6' should have '%s' value type." %
value_type_to_str(
lldb.eValueTypeVariableLocal))
argc = frame.FindVariable("argc")
self.DebugSBValue(argc)
self.assertTrue(argc.GetValueType() == lldb.eValueTypeVariableArgument,
"Variable 'argc' should have '%s' value type." %
value_type_to_str(lldb.eValueTypeVariableArgument))
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