lldb/test/API/lang/c/const_variables/TestConstVariables.py

   1 """Check that compiler-generated constant values work correctly"""
   2
   3
   4 import lldb
   5 from lldbsuite.test.decorators import *
   6 from lldbsuite.test.lldbtest import *
   7 from lldbsuite.test import lldbutil
   8
   9
  10 class ConstVariableTestCase(TestBase):
  11     @expectedFailureAll(oslist=["freebsd", "linux"], compiler="icc")
  12     @expectedFailureAll(archs=["mips", "mipsel", "mips64", "mips64el"])
  13     @expectedFailureAll(
  14         oslist=["windows"],
  15         bugnumber="llvm.org/pr24489: Name lookup not working correctly on Windows",
  16     )
  17     def test_and_run_command(self):
  18         """Test interpreted and JITted expressions on constant values."""
  19         self.build()
  20         exe = self.getBuildArtifact("a.out")
  21         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  22
  23         # Break inside the main.
  24         lldbutil.run_break_set_by_symbol(self, "main", num_expected_locations=1)
  25
  26         self.runCmd("run", RUN_SUCCEEDED)
  27
  28         # The stop reason of the thread should be breakpoint.
  29         self.expect(
  30             "thread list",
  31             STOPPED_DUE_TO_BREAKPOINT,
  32             substrs=["stopped", "stop reason = breakpoint"],
  33         )
  34
  35         # The breakpoint should have a hit count of 1.
  36         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
  37
  38         self.runCmd("next")
  39         self.runCmd("next")
  40
  41         # Try frame variable.
  42         self.expect(
  43             "frame variable index",
  44             VARIABLES_DISPLAYED_CORRECTLY,
  45             substrs=["(int32_t) index = 512"],
  46         )
  47
  48         # Try an interpreted expression.
  49         self.expect(
  50             "expr (index + 512)", VARIABLES_DISPLAYED_CORRECTLY, substrs=["1024"]
  51         )
  52
  53         # Try a JITted expression.
  54         self.expect(
  55             "expr (int)getpid(); (index - 256)",
  56             VARIABLES_DISPLAYED_CORRECTLY,
  57             substrs=["256"],
  58         )
  59
  60         self.runCmd("kill")