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Disable dead variant removal for `#[repr(C)]` enums. See https://github.com/rust-lang/unsafe-code-guidelines/issues/500.
2024-03-26 01:44:58 +08:00
error: layout_of(Univariant) = Layout {
size: Size(4 bytes),
align: AbiAndPrefAlign {
abi: Align(4 bytes),
pref: $SOME_ALIGN,
},
abi: Uninhabited,
fields: Arbitrary {
offsets: [
Size(0 bytes),
],
memory_index: [
0,
],
},
largest_niche: Some(
Niche {
offset: Size(0 bytes),
value: Int(
I32,
false,
),
valid_range: 0..=0,
},
),
variants: Multiple {
tag: Initialized {
value: Int(
I32,
false,
),
valid_range: 0..=0,
},
tag_encoding: Direct,
tag_field: 0,
variants: [
Layout {
size: Size(4 bytes),
align: AbiAndPrefAlign {
abi: Align(4 bytes),
pref: $SOME_ALIGN,
},
abi: Uninhabited,
fields: Arbitrary {
offsets: [
Size(4 bytes),
],
memory_index: [
0,
],
},
largest_niche: None,
variants: Single {
index: 0,
},
max_repr_align: None,
unadjusted_abi_align: Align(4 bytes),
},
],
},
max_repr_align: None,
unadjusted_abi_align: Align(4 bytes),
}
--> $DIR/repr-c-dead-variants.rs:38:1
|
LL | enum Univariant {
| ^^^^^^^^^^^^^^^
error: layout_of(TwoVariants) = Layout {
size: Size(8 bytes),
align: AbiAndPrefAlign {
abi: Align(4 bytes),
pref: $SOME_ALIGN,
},
abi: ScalarPair(
Initialized {
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
Union {
value: Int(
I8,
false,
),
},
),
fields: Arbitrary {
offsets: [
Size(0 bytes),
],
memory_index: [
0,
],
},
largest_niche: Some(
Niche {
offset: Size(0 bytes),
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
),
variants: Multiple {
tag: Initialized {
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
tag_encoding: Direct,
tag_field: 0,
variants: [
Layout {
size: Size(4 bytes),
align: AbiAndPrefAlign {
abi: Align(4 bytes),
pref: $SOME_ALIGN,
},
abi: Uninhabited,
fields: Arbitrary {
offsets: [
Size(4 bytes),
],
memory_index: [
0,
],
},
largest_niche: None,
variants: Single {
index: 0,
},
max_repr_align: None,
unadjusted_abi_align: Align(4 bytes),
},
Layout {
size: Size(8 bytes),
align: AbiAndPrefAlign {
abi: Align(4 bytes),
pref: $SOME_ALIGN,
},
abi: ScalarPair(
Initialized {
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
Union {
value: Int(
I8,
false,
),
},
),
fields: Arbitrary {
offsets: [
Size(4 bytes),
],
memory_index: [
0,
],
},
largest_niche: None,
variants: Single {
index: 1,
},
max_repr_align: None,
unadjusted_abi_align: Align(4 bytes),
},
],
},
max_repr_align: None,
unadjusted_abi_align: Align(4 bytes),
}
--> $DIR/repr-c-dead-variants.rs:45:1
|
LL | enum TwoVariants {
| ^^^^^^^^^^^^^^^^
error: layout_of(DeadBranchHasOtherField) = Layout {
size: Size(16 bytes),
align: AbiAndPrefAlign {
abi: Align(8 bytes),
pref: $SOME_ALIGN,
},
abi: Aggregate {
sized: true,
},
fields: Arbitrary {
offsets: [
Size(0 bytes),
],
memory_index: [
0,
],
},
largest_niche: Some(
Niche {
offset: Size(0 bytes),
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
),
variants: Multiple {
tag: Initialized {
value: Int(
I32,
false,
),
valid_range: 0..=1,
},
tag_encoding: Direct,
tag_field: 0,
variants: [
Layout {
size: Size(16 bytes),
align: AbiAndPrefAlign {
abi: Align(8 bytes),
pref: $SOME_ALIGN,
},
abi: Uninhabited,
fields: Arbitrary {
offsets: [
Size(8 bytes),
Size(8 bytes),
],
memory_index: [
0,
1,
],
},
largest_niche: None,
variants: Single {
index: 0,
},
max_repr_align: Some(
Align(8 bytes),
),
unadjusted_abi_align: Align(8 bytes),
},
Layout {
size: Size(16 bytes),
align: AbiAndPrefAlign {
abi: Align(8 bytes),
pref: $SOME_ALIGN,
},
abi: Aggregate {
sized: true,
},
fields: Arbitrary {
offsets: [
Size(8 bytes),
],
memory_index: [
0,
],
},
largest_niche: None,
variants: Single {
index: 1,
},
max_repr_align: None,
unadjusted_abi_align: Align(8 bytes),
},
],
},
max_repr_align: Some(
Align(8 bytes),
),
unadjusted_abi_align: Align(8 bytes),
}
--> $DIR/repr-c-dead-variants.rs:57:1
|
LL | enum DeadBranchHasOtherField {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 3 previous errors