46e848a23b
Adds test that checks whether LLDB correctly infers the alignment of packed structures. Specifically, the `InferAlignment` code-path of the `ItaniumRecordLayoutBuilder` where it assumes that overlapping field offsets imply a packed structure and thus sets alignment to `1`. See discussion in https://github.com/llvm/llvm-project/pull/93809. While here, also added a test-case where we check alignment of a class whose base has an explicit `DW_AT_alignment (those don't get transitively propagated in DWARF, but don't seem like a problem for LLDB). Lastly, also added an XFAIL-ed tests where the aforementioned `InferAlignment` kicks in for overlapping fields (but in this case incorrectly since the structure isn't actually packed).
24 lines
312 B
C++
24 lines
312 B
C++
struct B1 {
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char f1;
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};
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struct alignas(8) B2 {
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char f2;
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};
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struct D : B1, B2 {};
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D d3g;
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struct alignas(8) EmptyClassAlign8 {
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} t;
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struct alignas(8) __attribute__((packed)) AlignedAndPackedBase {
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} foo;
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struct Derived : AlignedAndPackedBase {
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} bar;
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static_assert(alignof(Derived) == 8);
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int main() {}
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