b22a714840
The JIT that runs makepad apps from source: lexer, front end, type checker, lazy borrow checker (Gandalf; `--check-first` opts in), codegen, session and warm/cold caches keyed by compiler stamp, provided crates bound late, startup images, live patching. User-facing name is `makepad run` (binary `makepad`, MAKEPAD_RUN_* env, ~/.makepad-run); libs/relax stays the internal library name. `makepad check` reports rustc-style diagnostics with rustc error codes and checks a whole workspace (`--workspace`). Runs on macOS, Linux, Windows and Android. makepad-remote: one tool schema for apps and the WM (app/1): grabs, captures, traces, frame profiles and tweaks. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
31 lines
1.5 KiB
Rust
31 lines
1.5 KiB
Rust
// moves out of *Box locals: the allocation is freed without dropping the contents again
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use std::cell::Cell;
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thread_local! { static DROPS: Cell<u32> = Cell::new(0); }
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struct D(u32);
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impl Drop for D { fn drop(&mut self) { DROPS.with(|d| d.set(d.get() + 1)); } }
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fn drops() -> u32 { DROPS.with(|d| d.get()) }
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fn reset() { DROPS.with(|d| d.set(0)); }
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fn f1(b: Box<D>) -> D { *b }
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fn f2(b: Box<D>) -> D { let d = *b; d }
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fn f3(b: Option<Box<D>>) -> D { if let Some(b) = b { *b } else { D(0) } }
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fn f4(b: Option<Box<D>>) -> D { if let Some(b) = b { return *b; } D(0) }
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fn f5(b: Box<D>) -> D { return *b; }
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#[test] fn t1() { reset(); drop(f1(Box::new(D(1)))); assert_eq!(drops(), 1); }
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#[test] fn t2() { reset(); drop(f2(Box::new(D(1)))); assert_eq!(drops(), 1); }
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#[test] fn t3() { reset(); drop(f3(Some(Box::new(D(1))))); assert_eq!(drops(), 1); }
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#[test] fn t4() { reset(); drop(f4(Some(Box::new(D(1))))); assert_eq!(drops(), 1); }
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#[test] fn t5() { reset(); drop(f5(Box::new(D(1)))); assert_eq!(drops(), 1); }
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// float -> 128-bit casts saturate, NaN -> 0
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#[test]
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fn float_to_128() {
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assert_eq!(1.5e3f64 as u128, 1500);
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assert_eq!((-1.0f64) as u128, 0);
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assert_eq!(f64::NAN as i128, 0);
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assert_eq!(1e40f64 as u128, u128::MAX);
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assert_eq!((-1e40f64) as i128, i128::MIN);
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assert_eq!(1e40f64 as i128, i128::MAX);
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assert_eq!((-2.5f64) as i128, -2);
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assert_eq!(3.0e20f64 as u128, 300000000000000000000);
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assert_eq!((-3.0e20f64) as i128, -300000000000000000000);
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assert_eq!(7.9f32 as u128, 7);
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}
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