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"""Test variable with function ptr type and that break on the function works."""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class FunctionTypesTestCase(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(self):
"""Test 'callback' has function ptr type, then break on the function."""
self.build()
self.runToBreakpoint()
# Check that the 'callback' variable display properly.
self.expect("frame variable --show-types callback", VARIABLES_DISPLAYED_CORRECTLY,
startstr = '(int (*)(const char *)) callback =')
# And that we can break on the callback function.
lldbutil.run_break_set_by_symbol (self, "string_not_empty", num_expected_locations=1, sym_exact=True)
self.runCmd("continue")
# Check that we do indeed stop on the string_not_empty function.
self.expect("process status", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['a.out`string_not_empty',
'stop reason = breakpoint'])
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21765")
def test_pointers(self):
"""Test that a function pointer to 'printf' works and can be called."""
self.build()
self.runToBreakpoint()
self.expect("expr string_not_empty",
substrs = ['(int (*)(const char *)) $0 = ', '(a.out`'])
if self.platformIsDarwin():
regexps = ['lib.*\.dylib`printf']
else:
regexps = ['printf']
self.expect("expr (int (*)(const char*, ...))printf",
substrs = ['(int (*)(const char *, ...)) $1 = '],
patterns = regexps)
self.expect("expr $1(\"Hello world\\n\")",
startstr = '(int) $2 = 12')
def runToBreakpoint(self):
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break inside the main.
lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_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'])
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