xref: /llvm-project/lldb/test/API/lang/c/modules/TestCModules.py (revision 2238dcc39358353cac21df75c3c3286ab20b8f53) 
1"""Test that importing modules in C works as expected."""
2
3
4import os
5
6import lldb
7from lldbsuite.test.decorators import *
8from lldbsuite.test.lldbtest import *
9from lldbsuite.test import lldbutil
10
11
12class CModulesTestCase(TestBase):
13    @expectedFailureAll(
14        oslist=["freebsd", "linux"],
15        bugnumber="http://llvm.org/pr23456 'fopen' has unknown return type",
16    )
17    @expectedFailureAll(
18        oslist=["windows"],
19        bugnumber="llvm.org/pr24489: Name lookup not working correctly on Windows",
20    )
21    @skipIf(macos_version=["<", "10.12"])
22    @expectedFailureNetBSD
23    def test_expr(self):
24        self.build()
25        exe = self.getBuildArtifact("a.out")
26        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
27
28        # Break inside the foo function which takes a bar_ptr argument.
29        lldbutil.run_break_set_by_file_and_line(
30            self, "main.c", self.line, num_expected_locations=1, loc_exact=True
31        )
32
33        self.runCmd("run", RUN_SUCCEEDED)
34
35        # The stop reason of the thread should be breakpoint.
36        self.expect(
37            "thread list",
38            STOPPED_DUE_TO_BREAKPOINT,
39            substrs=["stopped", "stop reason = breakpoint"],
40        )
41
42        # The breakpoint should have a hit count of 1.
43        lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
44
45        # Enable logging of the imported AST.
46        log_file = self.getBuildArtifact("lldb-ast-log.txt")
47        self.runCmd("log enable lldb ast -f '%s'" % log_file)
48
49        self.expect(
50            "expr -l objc++ -- @import Darwin; 3",
51            VARIABLES_DISPLAYED_CORRECTLY,
52            substrs=["int", "3"],
53        )
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=["FILE", "_close"],
61        )
62
63        # Check that the AST log contains exactly one definition of __sFILE.
64        f = open(log_file)
65        log_lines = f.readlines()
66        f.close()
67        os.remove(log_file)
68        self.assertEqual(" ".join(log_lines).count("struct __sFILE definition"), 1)
69
70        self.expect(
71            "expr *myFile", VARIABLES_DISPLAYED_CORRECTLY, substrs=["a", "5", "b", "9"]
72        )
73
74        self.expect(
75            "expr MIN((uint64_t)2, (uint64_t)3)",
76            VARIABLES_DISPLAYED_CORRECTLY,
77            substrs=["uint64_t", "2"],
78        )
79
80        self.expect(
81            "expr stdin", VARIABLES_DISPLAYED_CORRECTLY, substrs=["(FILE *)", "0x"]
82        )
83
84    def setUp(self):
85        # Call super's setUp().
86        TestBase.setUp(self)
87        # Find the line number to break inside main().
88        self.line = line_number("main.c", "// Set breakpoint 0 here.")
89