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State effect calculation too aggressive. #134

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froystig opened this issue Jul 28, 2010 · 1 comment
Closed

State effect calculation too aggressive. #134

froystig opened this issue Jul 28, 2010 · 1 comment
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A-type-system Area: Type system E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.

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@froystig
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Rustboot thinks that the type

type foo = fn(mutable int x) -> int;

is state, but it's not. Fix this and any similar over-excitements.
@graydon
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graydon commented Jan 27, 2011

WONTFIX (not required for bootstrapping)

@evanmcc evanmcc mentioned this issue Apr 3, 2012
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keeperofdakeys pushed a commit to keeperofdakeys/rust that referenced this issue Dec 12, 2017
@alexcrichton
Merge pull request rust-lang#134 from alexcrichton/merge
0ba8571 
Merging a number of PRs into one
kazcw pushed a commit to kazcw/rust that referenced this issue Oct 23, 2018
@gnzlbg @alexcrichton
[travis-ci] allow testing on all branches (rust-lang#134)
077f1f7
dlrobertson pushed a commit to dlrobertson/rust that referenced this issue Nov 29, 2018
@Havvy
Merge pull request rust-lang#134 from brauliobz/grammar_call_expr
f9db607 
Call expression grammar
bors pushed a commit to rust-lang-ci/rust that referenced this issue Oct 1, 2021
@miguelraz
add helloworld to README (rust-lang#134)
3032a62 
* add helloworld to README
djtech-dev pushed a commit to djtech-dev/rust that referenced this issue Dec 9, 2021
@TheDan64
Merge pull request rust-lang#134 from seanyoung/const_int_from_string
21eb53b 
Added missing return 'ctx lt to const_int_from_string
@Amanieu Amanieu mentioned this issue Jun 12, 2023
Open
celinval pushed a commit to celinval/rust-dev that referenced this issue Dec 6, 2024
@Yenyun035 @rajathkotyal
@MWDZ @zhassan-aws
Contracts & Harnesses for f{32,64}::to_int_unchecked (rust-lang#134)
72323e4 
Towards / Resolves rust-lang#59 

(Resolved) Depends on [this Kani
Issue](model-checking/kani#3629) and [this
PR](model-checking/kani#3660), as discussed in
[this
thread](model-checking#59 (comment))
in rust-lang#59

(Resolved) Depends on [this Kani
Issue](model-checking/kani#3711) and [this
PR](model-checking/kani#3742)

(Resolved) Waiting for Kani PR#3742 merged into
`feature/verify-rust-std`

f16 and f128 are in rust-lang#163 

### Changes
* Added contracts for `f{32,64}::to_int_unchecked` (located in
`library/core/src/num/f{32,64}.rs`)
* Added a macro for generating `to_int_unchecked` harnesses
* Added harnesses for `f{32,64}to_int_unchecked` of each integer type
* `i8`, `i16`, `i32`, `i64`, `i128`, `isize`, `u8`, `u16`, `u32`, `u64`,
`u128`, `usize` --- 12 harnesses in total.

### Verification Results
To compile, we need to add the `-Z float-lib` flag.
```
Checking harness num::verify::checked_f32_to_int_unchecked_usize...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.424911s

Checking harness num::verify::checked_f64_to_int_unchecked_u128...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.8557353s

Checking harness num::verify::checked_f32_to_int_unchecked_u16...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.195041s

Checking harness num::verify::checked_f32_to_int_unchecked_i8...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.2361426s

Checking harness num::verify::checked_f64_to_int_unchecked_i32...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.3952055s

Checking harness num::verify::checked_f64_to_int_unchecked_i128...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 7.5295496s

Checking harness num::verify::checked_f64_to_int_unchecked_u16...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.2897367s

Checking harness num::verify::checked_f32_to_int_unchecked_i64...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.58576s

Checking harness num::verify::checked_f64_to_int_unchecked_i16...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.2046432s

Checking harness num::verify::checked_f32_to_int_unchecked_i128...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.8473463s

Checking harness num::verify::checked_f32_to_int_unchecked_u8...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.131122s

Checking harness num::verify::checked_f32_to_int_unchecked_i16...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.436728s

Checking harness num::verify::checked_f32_to_int_unchecked_u128...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.666422s

Checking harness num::verify::checked_f64_to_int_unchecked_u8...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.17829s

Checking harness num::verify::checked_f32_to_int_unchecked_i32...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.6507607s

Checking harness num::verify::checked_f64_to_int_unchecked_i64...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 7.3081775s

Checking harness num::verify::checked_f64_to_int_unchecked_u64...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 7.0912967s

Checking harness num::verify::checked_f64_to_int_unchecked_i8...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.4602604s

Checking harness num::verify::checked_f64_to_int_unchecked_usize...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.9098988s

Checking harness num::verify::checked_f64_to_int_unchecked_u32...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.557031s

Checking harness num::verify::checked_f64_to_int_unchecked_isize...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 7.1193557s

Checking harness num::verify::checked_f32_to_int_unchecked_u64...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.7919626s

Checking harness num::verify::checked_f32_to_int_unchecked_u32...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.557074s

Checking harness num::verify::checked_f32_to_int_unchecked_isize...

VERIFICATION RESULT:
 ** 0 of 136 failed

VERIFICATION:- SUCCESSFUL
Verification Time: 6.710118s

Complete - 24 successfully verified harnesses, 0 failures, 24 total.
```
By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 and MIT licenses.

---------

Co-authored-by: rajathmCMU <rajathkotyal@gmail.com>
Co-authored-by: MWDZ <jinjunfeng721@gmail.com>
Co-authored-by: Zyad Hassan <zyadh@amazon.com>
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@graydon @froystig