From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/enum/enum-discrim-too-small.rs | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 tests/ui/enum/enum-discrim-too-small.rs (limited to 'tests/ui/enum/enum-discrim-too-small.rs') diff --git a/tests/ui/enum/enum-discrim-too-small.rs b/tests/ui/enum/enum-discrim-too-small.rs new file mode 100644 index 000000000..e49841402 --- /dev/null +++ b/tests/ui/enum/enum-discrim-too-small.rs @@ -0,0 +1,38 @@ +#[repr(u8)] +enum Eu8 { + Au8 = 23, + Bu8 = 223, + Cu8 = -23, + //~^ ERROR cannot apply unary operator `-` to type `u8` +} + +#[repr(u16)] +enum Eu16 { + Au16 = 23, + Bu16 = 55555, + Cu16 = -22333, + //~^ ERROR cannot apply unary operator `-` to type `u16` +} + +#[repr(u32)] +enum Eu32 { + Au32 = 23, + Bu32 = 3_000_000_000, + Cu32 = -2_000_000_000, + //~^ ERROR cannot apply unary operator `-` to type `u32` +} + +#[repr(u64)] +enum Eu64 { + Au32 = 23, + Bu32 = 3_000_000_000, + Cu32 = -2_000_000_000, + //~^ ERROR cannot apply unary operator `-` to type `u64` +} + +// u64 currently allows negative numbers, and i64 allows numbers greater than `1<<63`. This is a +// little counterintuitive, but since the discriminant can store all the bits, and extracting it +// with a cast requires specifying the signedness, there is no loss of information in those cases. +// This also applies to isize and usize on 64-bit targets. + +pub fn main() { } -- cgit v1.2.3