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Merged
merged 5 commits into from
Jul 27, 2021
Merged

Hello world #598

merged 5 commits into from
Jul 27, 2021

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@philberty
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@philberty philberty commented Jul 26, 2021 •
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extern "C" {
    fn puts(s: *const i8);
}

fn main() {
    unsafe {
        let a = "Hello World\0";
        let b = a as *const str;
        let c = b as *const i8;
        puts(c);
    }
}

Fixes #421

@philberty philberty added this to the Data Structures 3 - Traits milestone Jul 26, 2021
@philberty philberty self-assigned this Jul 26, 2021
@philberty philberty mentioned this pull request Jul 27, 2021
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philberty added 2 commits July 27, 2021 14:33
@philberty
Adds support for compilation of extern "C" functions.
2818017 
This adds extern block compilation support. It currently assumes the C abi
and does not perform any name mangling. It does not support varadic
arguments yet but its the initial support to get this working.

Fixes #421
@philberty
Add support for varadic extern "c" functions like printf
7f8adcc 
Varadic functions are only allowed in extern functions as far as I know.
@philberty philberty linked an issue Jul 27, 2021 that may be closed by this pull request
Crash when extern function item has no return type #595
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bors r+

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bors bot commented Jul 27, 2021

Build succeeded:

@bors bors bot merged commit f76ddb4 into master Jul 27, 2021
@philberty philberty deleted the phil/extern-fns branch July 28, 2021 09:17
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Crash when extern function item has no return type Can't call extern functions

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