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account for c_enum_min_bits in multiple-reprs UI test

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fixes #135777
This commit is contained in:
Jorge Aparicio 2025-01-20 16:59:22 +01:00
parent b5741a36a8
commit a710e1fb28
1 changed files with 11 additions and 1 deletions
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12
tests/ui/structs-enums/multiple-reprs.rs
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@ -69,7 +69,7 @@ pub fn main() {
assert_eq!(size_of::<E4>(), 8);
assert_eq!(size_of::<E5>(), align_size(10, align_of::<u32>()));
assert_eq!(size_of::<E6>(), align_size(14, align_of::<u64>()));
assert_eq!(size_of::<E7>(), align_size(6 + size_of::<c_int>(), align_of::<c_int>()));
assert_eq!(size_of::<E7>(), align_size(6 + c_enum_min_size(), align_of::<c_int>()));
assert_eq!(size_of::<p0f_api_query>(), 21);
}
@ -80,3 +80,13 @@ fn align_size(size: usize, align: usize) -> usize {
size
}
}
// this is `TargetOptions.c_enum_min_bits` which is not available as a `cfg` value so we retrieve
// the value at runtime. On most targets this is `sizeof(c_int)` but on `thumb*-none` is 1 byte
fn c_enum_min_size() -> usize {
#[repr(C)]
enum E {
A,
}
size_of::<E>()
}