1 """Test variable with function ptr type and that break on the function works.""" 2 3 import os, time 4 import unittest2 5 import lldb 6 from lldbtest import * 7 import lldbutil 8 9 class FunctionTypesTestCase(TestBase): 10 11 mydir = os.path.join("lang", "c", "function_types") 12 13 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 14 @dsym_test 15 def test_with_dsym(self): 16 """Test 'callback' has function ptr type, then break on the function.""" 17 self.buildDsym() 18 self.function_types() 19 20 @dwarf_test 21 def test_with_dwarf(self): 22 """Test 'callback' has function ptr type, then break on the function.""" 23 self.buildDwarf() 24 self.function_types() 25 26 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 27 @dsym_test 28 def test_pointers_with_dsym(self): 29 """Test that a function pointer to 'printf' works and can be called.""" 30 self.buildDsym() 31 self.function_pointers() 32 33 @expectedFailureFreeBSD('llvm.org/pr16697') # Expression fails with 'there is no JIT compiled function' 34 @dwarf_test 35 def test_pointers_with_dwarf(self): 36 """Test that a function pointer to 'printf' works and can be called.""" 37 self.buildDwarf() 38 self.function_pointers() 39 40 def setUp(self): 41 # Call super's setUp(). 42 TestBase.setUp(self) 43 # Find the line number to break inside main(). 44 self.line = line_number('main.c', '// Set break point at this line.') 45 46 def runToBreakpoint(self): 47 exe = os.path.join(os.getcwd(), "a.out") 48 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) 49 50 # Break inside the main. 51 lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True) 52 53 self.runCmd("run", RUN_SUCCEEDED) 54 55 # The stop reason of the thread should be breakpoint. 56 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 57 substrs = ['stopped', 58 'stop reason = breakpoint']) 59 60 # The breakpoint should have a hit count of 1. 61 self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, 62 substrs = [' resolved, hit count = 1']) 63 64 def function_types(self): 65 """Test 'callback' has function ptr type, then break on the function.""" 66 67 self.runToBreakpoint() 68 69 # Check that the 'callback' variable display properly. 70 self.expect("frame variable --show-types callback", VARIABLES_DISPLAYED_CORRECTLY, 71 startstr = '(int (*)(const char *)) callback =') 72 73 # And that we can break on the callback function. 74 lldbutil.run_break_set_by_symbol (self, "string_not_empty", num_expected_locations=1, sym_exact=True) 75 self.runCmd("continue") 76 77 # Check that we do indeed stop on the string_not_empty function. 78 self.expect("process status", STOPPED_DUE_TO_BREAKPOINT, 79 substrs = ['a.out`string_not_empty', 80 'stop reason = breakpoint']) 81 82 def function_pointers(self): 83 """Test that a function pointer to 'printf' works and can be called.""" 84 85 self.runToBreakpoint() 86 87 self.expect("expr string_not_empty", 88 substrs = ['(int (*)(const char *)) $0 = ', '(a.out`']) 89 90 if sys.platform.startswith("darwin"): 91 regexps = ['lib.*\.dylib`printf'] 92 else: 93 regexps = ['printf'] 94 self.expect("expr (int (*)(const char*, ...))printf", 95 substrs = ['(int (*)(const char *, ...)) $1 = '], 96 patterns = regexps) 97 98 self.expect("expr $1(\"Hello world\\n\")", 99 startstr = '(int) $2 = 12') 100 101 if __name__ == '__main__': 102 import atexit 103 lldb.SBDebugger.Initialize() 104 atexit.register(lambda: lldb.SBDebugger.Terminate()) 105 unittest2.main() 106
