Michael137 added a comment.
In D130213#3668450 <https://reviews.llvm.org/D130213#3668450>, @aprantl wrote:
> @werat did you build with assertions enabled?
>
> This change looks fine to me, but it might be interesting to see where the discrepancy between the platforms comes from.
Interestingly, @werat's test case crashes for me (without the patch) but only if I explicitly create an instance of `struct A`. Otherwise, lldb doesn't find `A::e`.
If a class only has constexpr statics, on Darwin we omit the structure type from DWARF:
0x0000000b: DW_TAG_compile_unit
DW_AT_producer ("Apple clang version 14.0.0 (clang-1400.0.25)")
DW_AT_language (DW_LANG_C_plus_plus_14)
DW_AT_name ("test.cpp")
DW_AT_LLVM_sysroot ("/Library/Developer/CommandLineTools/SDKs/MacOSX12.5.sdk")
DW_AT_APPLE_sdk ("MacOSX12.5.sdk")
DW_AT_stmt_list (0x00000000)
DW_AT_comp_dir ("/Users/michaelbuch/Git/lldb-build-lambda")
DW_AT_low_pc (0x0000000100003f9c)
DW_AT_high_pc (0x0000000100003fb8)
0x00000032: DW_TAG_enumeration_type
DW_AT_type (0x000000000000004b "int")
DW_AT_enum_class (true)
DW_AT_name ("ScopedEnum")
DW_AT_byte_size (0x04)
DW_AT_decl_file ("/Users/michaelbuch/Git/lldb-build-lambda/test.cpp")
DW_AT_decl_line (1)
0x0000003e: DW_TAG_enumerator
DW_AT_name ("scoped_enum_case1")
DW_AT_const_value (1)
0x00000044: DW_TAG_enumerator
DW_AT_name ("scoped_enum_case2")
DW_AT_const_value (2)
0x0000004a: NULL
0x0000004b: DW_TAG_base_type
DW_AT_name ("int")
DW_AT_encoding (DW_ATE_signed)
DW_AT_byte_size (0x04)
0x00000052: DW_TAG_subprogram
DW_AT_low_pc (0x0000000100003f9c)
DW_AT_high_pc (0x0000000100003fb8)
DW_AT_APPLE_omit_frame_ptr (true)
DW_AT_frame_base (DW_OP_reg31 WSP)
DW_AT_name ("main")
DW_AT_decl_file ("/Users/michaelbuch/Git/lldb-build-lambda/test.cpp")
DW_AT_decl_line (13)
DW_AT_type (0x000000000000004b "int")
DW_AT_external (true)
0x0000006b: DW_TAG_variable
DW_AT_location (DW_OP_fbreg +8)
DW_AT_name ("enum_alias_val")
DW_AT_decl_file ("/Users/michaelbuch/Git/lldb-build-lambda/test.cpp")
DW_AT_decl_line (14)
DW_AT_type (0x0000000000000032 "ScopedEnum")
0x00000079: NULL
0x0000007a: NULL
This is actually noted in one of the test cases in `TestConstStaticIntegralMember.py`:
# dsymutil strips the debug info for classes that only have const static
# data members without a definition namespace scope.
@expectedFailureAll(debug_info=["dsym"])
def test_class_with_only_const_static(self):
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D130213/new/
https://reviews.llvm.org/D130213