Working towards a libc-less (wasm32) libstd #45725

alexcrichton · 2017-11-02T18:19:44Z

This is a series of commits I was able to extract from prepare to comiple libstd on a "bare libc-less" target, notably wasm32. The actual wasm32 bits I intend to send in a PR later, this is just some internal refactorings required for libstd to work with a libc that's empty and a few other assorted refactorings.

No functional change should be included in this PR for users of libstd, this is intended to just be internal refactorings.

rust-highfive · 2017-11-02T18:19:55Z

r? @dtolnay

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dtolnay · 2017-11-04T04:46:11Z

@bors r+

bors · 2017-11-04T04:46:12Z

📌 Commit db3d3f0 has been approved by dtolnay

LukasKalbertodt · 2017-11-04T17:58:45Z

What a lovely PR! All of the commits have long, great descriptions too 😮

bors · 2017-11-05T01:41:06Z

⌛ Testing commit db3d3f00233eb4442c653549c7534ebcc676e106 with merge f080a4046c5e9bb23da1c0a1bc519c551408ec82...

bors · 2017-11-05T01:45:56Z

💔 Test failed - status-appveyor

alexcrichton · 2017-11-05T03:18:20Z

@bors: r=dtolnay

bors · 2017-11-05T03:18:20Z

📌 Commit 5b673fe has been approved by dtolnay

alexcrichton · 2017-11-05T03:18:42Z

@bors: r=dtolnay

bors · 2017-11-05T03:18:42Z

📌 Commit e82ce58 has been approved by dtolnay

bors · 2017-11-05T06:34:40Z

⌛ Testing commit e82ce589e7f13106d87317f186b275969e17117a with merge 5c430c47d8be405885401082eec445dfe7419d8d...

bors · 2017-11-05T06:42:14Z

💔 Test failed - status-travis

kennytm · 2017-11-05T09:55:24Z

unused_import on macOS when building libstd.

[00:04:39] error: unused import: `self`
[00:04:39]   --> src/libstd/sys/unix/rand.rs:31:14
[00:04:39]    |
[00:04:39] 31 |     use io::{self, Read};
[00:04:39]    |              ^^^^
[00:04:39]    |
[00:04:39] note: lint level defined here
[00:04:39]   --> src/libstd/lib.rs:232:9
[00:04:39]    |
[00:04:39] 232| #![deny(warnings)]
[00:04:39]    |         ^^^^^^^^
[00:04:39]    = note: #[deny(unused_imports)] implied by #[deny(warnings)]
[00:04:39] 
[00:04:43] error: aborting due to previous error
[00:04:43] 
[00:04:43] error: Could not compile `std`.

alexcrichton · 2017-11-05T16:02:40Z

@bors: r=dtolnay

bors · 2017-11-05T16:02:41Z

📌 Commit 847660c has been approved by dtolnay

bors · 2017-11-05T21:52:20Z

⌛ Testing commit 847660c3aeb2b81d3c836ee0cf0d93535c4cfdbc with merge de5fe8a8eca4f8bc459d7e48bd2497405b48fb37...

bors · 2017-11-05T22:06:13Z

💔 Test failed - status-travis

alexcrichton · 2017-11-06T02:59:15Z

@bors: r=dtolnay

bors · 2017-11-09T11:36:13Z

💔 Test failed - status-travis

bors · 2017-11-09T11:39:56Z

⌛ Testing commit 9435c71 with merge e811220421ad005f75424b01e78d7e1f88dbc39e...

bors · 2017-11-09T11:44:24Z

💔 Test failed - status-travis

bors · 2017-11-09T11:53:18Z

⌛ Testing commit 9435c71 with merge 9e989bf...

Working towards a libc-less (wasm32) libstd This is a series of commits I was able to extract from prepare to comiple libstd on a "bare libc-less" target, notably wasm32. The actual wasm32 bits I intend to send in a PR later, this is just some internal refactorings required for libstd to work with a `libc` that's empty and a few other assorted refactorings. No functional change should be included in this PR for users of libstd, this is intended to just be internal refactorings.

bors · 2017-11-09T11:56:10Z

💔 Test failed - status-travis

bors · 2017-11-09T13:25:27Z

⌛ Testing commit 9435c71 with merge be37f638ce7a40244220df291e0b5652ffc005fa...

bors · 2017-11-09T13:30:10Z

💔 Test failed - status-travis

alexcrichton · 2017-11-09T14:16:23Z

@bord: retry

alexcrichton · 2017-11-09T14:16:45Z

Er sorry

@bors: retry

kennytm · 2017-11-09T14:24:08Z

@bors treeclosed- p=0

bors · 2017-11-09T14:24:17Z

⌛ Testing commit 9435c71 with merge a5e95f7d2c5e1e2cee0b8b528e956a0ad992d1aa...

bors · 2017-11-09T15:42:24Z

💔 Test failed - status-travis

kennytm · 2017-11-09T15:56:43Z

Building stage2 std artifacts (x86_64-apple-darwin -> armv7-apple-ios)
...
[01:06:55] warning: dropping unsupported crate type `dylib` for target `armv7-apple-ios`
[01:06:55] 
[01:06:58] error[E0308]: mismatched types
[01:06:58]   --> src/libstd/sys/unix/backtrace/tracing/backtrace_fn.rs:39:29
[01:06:58]    |
[01:06:58] 39 |             exact_position: *from,
[01:06:58]    |                             ^^^^^ expected u8, found enum `libc::c_void`
[01:06:58]    |
[01:06:58]    = note: expected type `*const u8`
[01:06:58]               found type `*mut libc::c_void`
[01:06:58] 
[01:06:58] error[E0308]: mismatched types
[01:06:58]   --> src/libstd/sys/unix/backtrace/tracing/backtrace_fn.rs:40:26
[01:06:58]    |
[01:06:58] 40 |             symbol_addr: *from,
[01:06:58]    |                          ^^^^^ expected u8, found enum `libc::c_void`
[01:06:58]    |
[01:06:58]    = note: expected type `*const u8`
[01:06:58]               found type `*mut libc::c_void`

This commit removes usage of the `libc` crate in "portable" modules like those at the top level and `sys_common`. Instead common types like `*mut u8` or `u32` are used instead of `*mut c_void` or `c_int` as well as switching to platform-specific functions like `sys::strlen` instead of `libc::strlen`.

alexcrichton · 2017-11-09T15:57:04Z

@bors: r=dtolnay

bors · 2017-11-09T15:57:06Z

📌 Commit 5c3fe11 has been approved by dtolnay

bors · 2017-11-09T18:14:54Z

⌛ Testing commit 5c3fe11 with merge f1ea23e...

Working towards a libc-less (wasm32) libstd This is a series of commits I was able to extract from prepare to comiple libstd on a "bare libc-less" target, notably wasm32. The actual wasm32 bits I intend to send in a PR later, this is just some internal refactorings required for libstd to work with a `libc` that's empty and a few other assorted refactorings. No functional change should be included in this PR for users of libstd, this is intended to just be internal refactorings.

bors · 2017-11-09T20:46:36Z

☀️ Test successful - status-appveyor, status-travis
Approved by: dtolnay
Pushing f1ea23e to master...

bjorn3 · 2017-11-15T18:44:02Z

src/libstd/sys/redox/rand.rs

-use io;
-use rand::Rng;
-
-// FIXME: Use rand:


Please leave this FIXME

rust-highfive assigned dtolnay Nov 2, 2017

kennytm added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Nov 2, 2017

dtolnay approved these changes Nov 4, 2017

View reviewed changes

kennytm added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 4, 2017

alexcrichton force-pushed the std-less-rand branch from 6ae7610 to 5b673fe Compare November 5, 2017 03:18

alexcrichton force-pushed the std-less-rand branch from 5b673fe to e82ce58 Compare November 5, 2017 03:18

alexcrichton force-pushed the std-less-rand branch from e82ce58 to 847660c Compare November 5, 2017 16:02

alexcrichton force-pushed the std-less-rand branch from 847660c to eae99f0 Compare November 6, 2017 02:59

alexcrichton force-pushed the std-less-rand branch from 9435c71 to 5c3fe11 Compare November 9, 2017 15:56

bors merged commit 5c3fe11 into rust-lang:master Nov 9, 2017

bors mentioned this pull request Nov 9, 2017

Ignore panic functions in backtraces. Print inlined functions on Windows #45637

Closed

bjorn3 reviewed Nov 15, 2017

View reviewed changes

src/libstd/sys/redox/rand.rs

use io;

use rand::Rng;

// FIXME: Use rand:

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Please leave this FIXME

est31 mentioned this pull request Dec 1, 2017

Mismatched type error: type of crate instead of std is displayed #46112

Closed

alexcrichton deleted the std-less-rand branch December 1, 2017 21:26

Working towards a libc-less (wasm32) libstd #45725

Working towards a libc-less (wasm32) libstd #45725

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