xref: /llvm-project/lldb/test/API/lang/c/modules/TestCModules.py (revision 9f0b5f9a39ea6e70c98c69a720d7e4f5d3800bf6) 
1"""Test that importing modules in C works as expected."""
2
3
4
5import os
6
7import lldb
8from lldbsuite.test.decorators import *
9from lldbsuite.test.lldbtest import *
10from lldbsuite.test import lldbutil
11
12
13class CModulesTestCase(TestBase):
14
15    mydir = TestBase.compute_mydir(__file__)
16
17    @expectedFailureAll(
18        oslist=["freebsd", "linux"],
19        bugnumber="http://llvm.org/pr23456 'fopen' has unknown return type")
20    @expectedFailureAll(
21        oslist=["windows"],
22        bugnumber="llvm.org/pr24489: Name lookup not working correctly on Windows")
23    @skipIf(macos_version=["<", "10.12"])
24    @expectedFailureNetBSD
25    def test_expr(self):
26        self.build()
27        exe = self.getBuildArtifact("a.out")
28        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
29
30        # Break inside the foo function which takes a bar_ptr argument.
31        lldbutil.run_break_set_by_file_and_line(
32            self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
33
34        self.runCmd("run", RUN_SUCCEEDED)
35
36        # The stop reason of the thread should be breakpoint.
37        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
38                    substrs=['stopped',
39                             'stop reason = breakpoint'])
40
41        # The breakpoint should have a hit count of 1.
42        lldbutil.check_breakpoint(self, bpno = 1, expected_hit_count = 1)
43
44        # Enable logging of the imported AST.
45        log_file = self.getBuildArtifact("lldb-ast-log.txt")
46        self.runCmd("log enable lldb ast -f '%s'" % log_file)
47
48        self.expect(
49            "expr -l objc++ -- @import Darwin; 3",
50            VARIABLES_DISPLAYED_CORRECTLY,
51            substrs=[
52                "int",
53                "3"])
54
55        # This expr command imports __sFILE with definition
56        # (FILE is a typedef to __sFILE.)
57        self.expect(
58            "expr *fopen(\"/dev/zero\", \"w\")",
59            VARIABLES_DISPLAYED_CORRECTLY,
60            substrs=[
61                "FILE",
62                "_close"])
63
64        # Check that the AST log contains exactly one definition of __sFILE.
65        f = open(log_file)
66        log_lines = f.readlines()
67        f.close()
68        os.remove(log_file)
69        self.assertEqual(" ".join(log_lines).count("struct __sFILE definition"),
70                         1)
71
72        self.expect("expr *myFile", VARIABLES_DISPLAYED_CORRECTLY,
73                    substrs=["a", "5", "b", "9"])
74
75        self.expect(
76            "expr MIN((uint64_t)2, (uint64_t)3)",
77            VARIABLES_DISPLAYED_CORRECTLY,
78            substrs=[
79                "uint64_t",
80                "2"])
81
82        self.expect("expr stdin", VARIABLES_DISPLAYED_CORRECTLY,
83                    substrs=["(FILE *)", "0x"])
84
85    def setUp(self):
86        # Call super's setUp().
87        TestBase.setUp(self)
88        # Find the line number to break inside main().
89        self.line = line_number('main.c', '// Set breakpoint 0 here.')
90