lldb/test/API/commands/expression/bitfield_enums/TestBitfieldEnums.py

   1 """
   2 Test that the expression parser accounts for the underlying type of bitfield
   3 enums when looking for matching values.
   4 """
   5
   6 import lldb
   7 from lldbsuite.test.decorators import *
   8 from lldbsuite.test.lldbtest import *
   9 from lldbsuite.test import lldbutil
  10
  11
  12 class TestBitfieldEnum(TestBase):
  13     # Prior to clang-19, clang's DWARF v2 is missing missing DW_AT_type which
  14     # causes unsigned_max to appear as -1 instead of the "max" enumerator, whose
  15     # value is 3. From 19 onward, DW_AT_type is added as long as strict DWARF
  16     # is not enabled.
  17     @skipIf(dwarf_version=["<", "3"], compiler="clang", compiler_version=["<", "19.0"])
  18     def test_bitfield_enums(self):
  19         self.build()
  20
  21         lldbutil.run_to_source_breakpoint(
  22             self, "// break here", lldb.SBFileSpec("main.cpp", False)
  23         )
  24
  25         self.expect_expr(
  26             "bfs",
  27             result_type="BitfieldStruct",
  28             result_children=[
  29                 ValueCheck(name="signed_min", value="min"),
  30                 ValueCheck(name="signed_other", value="-1"),
  31                 ValueCheck(name="signed_max", value="max"),
  32                 ValueCheck(name="unsigned_min", value="min"),
  33                 ValueCheck(name="unsigned_other", value="1"),
  34                 ValueCheck(name="unsigned_max", value="max"),
  35             ],
  36         )