jyn514

• Feature Name: const if
• Start Date: 2024-12-21
• RFC PR: rust-lang/rfcs#0000
• Rust Issue: rust-lang/rust#0000

Summary

const if allows type-checked conditional compilation.

jyn514

diff --git a/src/config.c b/src/config.c
index de3be1c..d482e7c 100644
--- a/src/config.c
+++ b/src/config.c
@@ -17,6 +17,7 @@
 #include <unistd.h>
 #include <libgen.h>
 
+#include "config.h"
 #include "keyd.h"

jyn514

 rustc src/main.rs  -Ztreat-err-as-bug=3
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: failed while formatting fluent string `borrowck_returned_lifetime_short`: 
the fluent string has an argument `category_desc` that was not found.
help: no arguments are available
the fluent string has an argument `free_region_name` that was not found.
help: no arguments are available
the fluent string has an argument `outlived_fr_name` that was not found.
help: no arguments are available
', compiler/rustc_errors/src/emitter.rs:2397:77
stack backtrace:

jyn514

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 5bc4d164265..211d45e022e 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -1939,6 +1939,17 @@ fn make_compile_args(
         // Use a single thread for efficiency and a deterministic error message order
         rustc.arg("-Zthreads=1");
 
+        // Hide libstd sources from ui tests to make sure we generate the stderr
+        // output that users will see.

jyn514

Checking stage0 compiler artifacts {rustc_middle} (x86_64-unknown-linux-gnu)
    Checking rustc_middle v0.0.0 (/home/jyn/src/rust/compiler/rustc_middle)
time:   0.635; rss:   51MB ->  310MB ( +259MB)  expand_crate
time:   0.635; rss:   51MB ->  310MB ( +259MB)  macro_expand_crate
time:   0.018; rss:  310MB ->  310MB (   +0MB)  AST_validation
time:   0.127; rss:  312MB ->  346MB (  +33MB)  late_resolve_crate
time:   0.011; rss:  346MB ->  346MB (   +0MB)  resolve_check_unused
time:   0.021; rss:  346MB ->  346MB (   +0MB)  resolve_postprocess
time:   0.173; rss:  310MB ->  346MB (  +35MB)  resolve_crate
time:   0.011; rss:  346MB ->  346MB (   +0MB)  complete_gated_feature_checking

jyn514

#!/usr/bin/env python3
import re
import sys

def sizeof_fmt(num, suffix="B"):
    for unit in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"]:
        if abs(num) < 1024.0:
            return f"{num:3.1f}{unit}{suffix}"
        num /= 1024.0
    return f"{num:.1f}Yi{suffix}"

jyn514

Git redesign

• all repos start with a blank initial commit, no more "does not have any commits yet" errors

• git commit foo should just work for new files, no more making people run git add first lol

• no fucking perl scripts lmfao

  • better perf
  • git on windows is less horrifically cursed

jyn514

#!/usr/bin/env bash

set -x

error() {
    echo "$@" >&2
}

usage() {
    error "usage: $0 <src> <dest>"

jyn514

PS C:\Users\Joshua Nelson\src\rust2> git worktree add ../rust5
Preparing worktree (new branch 'rust5')
Updating files: 100% (38772/38772), done.
HEAD is now at e4330295d9b Give a more helpful error for "trimmed_def_paths construted"
PS C:\Users\Joshua Nelson\src\rust2> cd ../rust5
PS C:\Users\Joshua Nelson\src\rust5> ./x.ps1 build --dry-run
downloading https://static.rust-lang.org/dist/2022-11-01/rust-std-beta-x86_64-pc-windows-msvc.tar.xz
#################################################################################################################### 100.0%
extracting C:\Users\Joshua Nelson\src\rust5\build\cache\2022-11-01\rust-std-beta-x86_64-pc-windows-msvc.tar.xz
downloading https://static.rust-lang.org/dist/2022-11-01/rustc-beta-x86_64-pc-windows-msvc.tar.xz

jyn514

Building rustbuild
    Finished dev [unoptimized] target(s) in 0.04s
Building stage0 library artifacts (aarch64-unknown-linux-gnu -> aarch64-unknown-linux-gnu)
    Finished release [optimized] target(s) in 38.39s
Copying stage0 library from stage0 (aarch64-unknown-linux-gnu -> aarch64-unknown-linux-gnu / aarch64-unknown-linux-gnu)
Building stage0 compiler artifacts (aarch64-unknown-linux-gnu -> aarch64-unknown-linux-gnu)
    Finished release [optimized] target(s) in 2m 46s
Copying stage0 rustc from stage0 (aarch64-unknown-linux-gnu -> aarch64-unknown-linux-gnu / aarch64-unknown-linux-gnu)
Assembling stage1 compiler (aarch64-unknown-linux-gnu)
Building stage0 tool clippy-driver (aarch64-unknown-linux-gnu)