Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

enums + generics result in checker error #23269

Closed
Le0Developer opened this issue Dec 25, 2024 · 0 comments · Fixed by #23273
Closed

enums + generics result in checker error #23269

Le0Developer opened this issue Dec 25, 2024 · 0 comments · Fixed by #23273
Assignees
Labels
Bug This tag is applied to issues which reports bugs. Generics[T] Bugs/feature requests, that are related to the V generics. Status: Confirmed This bug has been confirmed to be valid by a contributor. Unit: cgen Bugs/feature requests, that are related to the default C generating backend. Unit: Checker Bugs/feature requests, that are related to the type checker.

Comments

@Le0Developer
Copy link
Member

Le0Developer commented Dec 25, 2024

V doctor:

V full version: V 0.4.7 62c69e8.caa0c46
OS: macos, macOS, 15.2, 24C101
Processor: 8 cpus, 64bit, little endian, Apple M2

getwd: /Users/leodev/p/v
vexe: /Users/leodev/bin/v/v
vexe mtime: 2024-08-26 08:17:23

vroot: OK, value: /Users/leodev/bin/v
VMODULES: OK, value: /Users/leodev/.vmodules
VTMP: OK, value: /tmp/v_501

Git version: git version 2.39.5 (Apple Git-154)
Git vroot status: weekly.2024.34-46-gcaa0c464 (866 commit(s) behind V master)
.git/config present: true

CC version: Apple clang version 16.0.0 (clang-1600.0.26.6)
thirdparty/tcc status: thirdparty-macos-arm64 713692d4

What did you do?
./v -g -o vdbg cmd/v && ./vdbg repro.v

import os

fn prompt_enum[T](prompt string) T {
	full_prompt := '${prompt}: '
	for {
		s := os.input_opt(full_prompt) or { continue }
		if x := T.from(s) {
			return x
		}
	}
	panic('unreachable')
}

enum EnumA {
	a
	b
	c
}

enum EnumB {
	x
	y
	z
}

fn main() {
	prompt_enum[EnumA]('Which enum A?')
	prompt_enum[EnumB]('Which enum B?')
}

What did you expect to see?

Successful compilation

What did you see instead?

repro.v:8:11: error: cannot use `EnumA` as type `EnumB` in return argument
    6 |         s := os.input_opt(full_prompt) or { continue }
    7 |         if x := T.from(s) {
    8 |             return x
      |                    ^
    9 |         }
   10 |     }

Note

You can use the 👍 reaction to increase the issue's priority for developers.

Please note that only the 👍 reaction to the issue itself counts as a vote.
Other reactions and those to comments will not be taken into account.

Huly®: V_0.6-21703

@Le0Developer Le0Developer added the Bug This tag is applied to issues which reports bugs. label Dec 25, 2024
@felipensp felipensp self-assigned this Dec 26, 2024
@felipensp felipensp added Status: Confirmed This bug has been confirmed to be valid by a contributor. Generics[T] Bugs/feature requests, that are related to the V generics. Unit: Checker Bugs/feature requests, that are related to the type checker. Unit: cgen Bugs/feature requests, that are related to the default C generating backend. labels Dec 26, 2024
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
Bug This tag is applied to issues which reports bugs. Generics[T] Bugs/feature requests, that are related to the V generics. Status: Confirmed This bug has been confirmed to be valid by a contributor. Unit: cgen Bugs/feature requests, that are related to the default C generating backend. Unit: Checker Bugs/feature requests, that are related to the type checker.
Projects
None yet
Development

Successfully merging a pull request may close this issue.

2 participants