1"""
2Tests that C strings work as expected in expressions
3"""
4import lldb
5from lldbtest import *
6import lldbutil
7
8class CStringsTestCase(TestBase):
9
10    mydir = os.path.join("lang", "c", "strings")
11
12    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
13    @dsym_test
14    def test_with_dsym_and_run_command(self):
15        """Tests that C strings work as expected in expressions"""
16        self.buildDsym()
17        self.static_method_commands()
18
19    @expectedFailureFreeBSD # llvm.org/pr16697
20    @dwarf_test
21    def test_with_dwarf_and_run_command(self):
22        """Tests that C strings work as expected in expressions"""
23        self.buildDwarf()
24        self.static_method_commands()
25
26    def setUp(self):
27        TestBase.setUp(self)
28
29    def set_breakpoint(self, line):
30        lldbutil.run_break_set_by_file_and_line (self, "main.c", line, num_expected_locations=1, loc_exact=True)
31
32    def static_method_commands(self):
33        """Tests that C strings work as expected in expressions"""
34        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
35
36        self.set_breakpoint(line_number('main.c', '// breakpoint 1'))
37
38        self.runCmd("process launch", RUN_SUCCEEDED)
39
40        self.expect("expression -- a[2]",
41                    patterns = ["\((const )?char\) \$0 = 'c'"])
42
43        self.expect("expression -- z[2]",
44                    startstr = "(const char) $1 = 'x'")
45
46        # On Linux, the expression below will test GNU indirect function calls.
47        self.expect("expression -- (int)strlen(\"hello\")",
48                    startstr = "(int) $2 = 5")
49
50        self.expect("expression -- \"world\"[2]",
51                    startstr = "(const char) $3 = 'r'")
52
53        self.expect("expression -- \"\"[0]",
54                    startstr = "(const char) $4 = '\\0'")
55
56        self.expect("expr --raw -- \"hello\"",
57            substrs = ['[0] = \'h\'',
58                       '[5] = \'\\0\''])
59
60        self.expect("p \"hello\"",
61            substrs = ['[6]) $', 'hello'])
62
63        self.expect("p (char*)\"hello\"",
64                    substrs = ['(char *) $', ' = 0x',
65                               'hello'])
66
67        self.expect("p (int)strlen(\"\")",
68                    substrs = ['(int) $', ' = 0'])
69
70        self.expect("expression !z",
71                    substrs = ['false'])
72
73if __name__ == '__main__':
74    import atexit
75    lldb.SBDebugger.Initialize()
76    atexit.register(lambda: lldb.SBDebugger.Terminate())
77    unittest2.main()
78