commit d2c024b53a34386d4d4c968cd0403c9194f1db4f Author: Ralf Jung Date: Sat Aug 3 11:17:43 2024 +0200 stabilize const_fn_floating_point_arithmetic diff --git a/compiler/rustc_const_eval/src/check_consts/check.rs b/compiler/rustc_const_eval/src/check_consts/check.rs index 3ded81b90ff..4232c241ad4 100644 --- a/compiler/rustc_const_eval/src/check_consts/check.rs +++ b/compiler/rustc_const_eval/src/check_consts/check.rs @@ -569,46 +569,42 @@ fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location) { Rvalue::NullaryOp( NullOp::SizeOf | NullOp::AlignOf | NullOp::OffsetOf(_) | NullOp::UbChecks, _, ) => {} Rvalue::ShallowInitBox(_, _) => {} Rvalue::UnaryOp(_, operand) => { let ty = operand.ty(self.body, self.tcx); - if is_int_bool_or_char(ty) { - // Int, bool, and char operations are fine. - } else if ty.is_floating_point() { - self.check_op(ops::FloatingPointOp); + if is_int_bool_float_or_char(ty) { + // Int, bool, float, and char operations are fine. } else { span_bug!(self.span, "non-primitive type in `Rvalue::UnaryOp`: {:?}", ty); } } Rvalue::BinaryOp(op, box (lhs, rhs)) => { let lhs_ty = lhs.ty(self.body, self.tcx); let rhs_ty = rhs.ty(self.body, self.tcx); - if is_int_bool_or_char(lhs_ty) && is_int_bool_or_char(rhs_ty) { - // Int, bool, and char operations are fine. + if is_int_bool_float_or_char(lhs_ty) && is_int_bool_float_or_char(rhs_ty) { + // Int, bool, float, and char operations are fine. } else if lhs_ty.is_fn_ptr() || lhs_ty.is_unsafe_ptr() { assert!(matches!( op, BinOp::Eq | BinOp::Ne | BinOp::Le | BinOp::Lt | BinOp::Ge | BinOp::Gt | BinOp::Offset )); self.check_op(ops::RawPtrComparison); - } else if lhs_ty.is_floating_point() || rhs_ty.is_floating_point() { - self.check_op(ops::FloatingPointOp); } else { span_bug!( self.span, "non-primitive type in `Rvalue::BinaryOp`: {:?} ⚬ {:?}", lhs_ty, rhs_ty ); } @@ -1003,17 +999,17 @@ fn place_as_reborrow<'tcx>( return None; } } } _ => None, } } -fn is_int_bool_or_char(ty: Ty<'_>) -> bool { - ty.is_bool() || ty.is_integral() || ty.is_char() +fn is_int_bool_float_or_char(ty: Ty<'_>) -> bool { + ty.is_bool() || ty.is_integral() || ty.is_char() || ty.is_floating_point() } fn emit_unstable_in_stable_error(ccx: &ConstCx<'_, '_>, span: Span, gate: Symbol) { let attr_span = ccx.tcx.def_span(ccx.def_id()).shrink_to_lo(); ccx.dcx().emit_err(UnstableInStable { gate: gate.to_string(), span, attr_span }); } diff --git a/compiler/rustc_const_eval/src/check_consts/ops.rs b/compiler/rustc_const_eval/src/check_consts/ops.rs index f47a2ec8f75..0b2024ac51f 100644 --- a/compiler/rustc_const_eval/src/check_consts/ops.rs +++ b/compiler/rustc_const_eval/src/check_consts/ops.rs @@ -50,38 +50,16 @@ fn status_in_item(&self, _ccx: &ConstCx<'_, 'tcx>) -> Status { fn importance(&self) -> DiagImportance { DiagImportance::Primary } fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx>; } -#[derive(Debug)] -pub struct FloatingPointOp; -impl<'tcx> NonConstOp<'tcx> for FloatingPointOp { - fn status_in_item(&self, ccx: &ConstCx<'_, 'tcx>) -> Status { - if ccx.const_kind() == hir::ConstContext::ConstFn { - Status::Unstable(sym::const_fn_floating_point_arithmetic) - } else { - Status::Allowed - } - } - - #[allow(rustc::untranslatable_diagnostic)] // FIXME: make this translatable - fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx> { - feature_err( - &ccx.tcx.sess, - sym::const_fn_floating_point_arithmetic, - span, - format!("floating point arithmetic is not allowed in {}s", ccx.const_kind()), - ) - } -} - /// A function call where the callee is a pointer. #[derive(Debug)] pub struct FnCallIndirect; impl<'tcx> NonConstOp<'tcx> for FnCallIndirect { fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx> { ccx.dcx().create_err(errors::UnallowedFnPointerCall { span, kind: ccx.const_kind() }) } } diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs index 689e2d2771e..63d6b4a07f0 100644 --- a/compiler/rustc_feature/src/accepted.rs +++ b/compiler/rustc_feature/src/accepted.rs @@ -108,16 +108,18 @@ macro_rules! declare_features { /// Allows use of the `#[collapse_debuginfo]` attribute. (accepted, collapse_debuginfo, "1.79.0", Some(100758)), /// Allows usage of the `compile_error!` macro. (accepted, compile_error, "1.20.0", Some(40872)), /// Allows `impl Trait` in function return types. (accepted, conservative_impl_trait, "1.26.0", Some(34511)), /// Allows calling constructor functions in `const fn`. (accepted, const_constructor, "1.40.0", Some(61456)), + /// Allows basic arithmetic on floating point types in a `const fn`. + (accepted, const_fn_floating_point_arithmetic, "CURRENT_RUSTC_VERSION", Some(57241)), /// Allows using and casting function pointers in a `const fn`. (accepted, const_fn_fn_ptr_basics, "1.61.0", Some(57563)), /// Allows trait bounds in `const fn`. (accepted, const_fn_trait_bound, "1.61.0", Some(93706)), /// Allows calling `transmute` in const fn (accepted, const_fn_transmute, "1.56.0", Some(53605)), /// Allows accessing fields of unions inside `const` functions. (accepted, const_fn_union, "1.56.0", Some(51909)), diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs index a3dfd44a094..45be9097fe0 100644 --- a/compiler/rustc_feature/src/unstable.rs +++ b/compiler/rustc_feature/src/unstable.rs @@ -397,18 +397,16 @@ pub fn internal(&self, feature: Symbol) -> bool { /// Allows to use the `#[cmse_nonsecure_entry]` attribute. (unstable, cmse_nonsecure_entry, "1.48.0", Some(75835)), /// Allows `async {}` expressions in const contexts. (unstable, const_async_blocks, "1.53.0", Some(85368)), /// Allows `const || {}` closures in const contexts. (incomplete, const_closures, "1.68.0", Some(106003)), /// Allows the definition of `const extern fn` and `const unsafe extern fn`. (unstable, const_extern_fn, "1.40.0", Some(64926)), - /// Allows basic arithmetic on floating point types in a `const fn`. - (unstable, const_fn_floating_point_arithmetic, "1.48.0", Some(57241)), /// Allows `for _ in _` loops in const contexts. (unstable, const_for, "1.56.0", Some(87575)), /// Allows using `&mut` in constant functions. (unstable, const_mut_refs, "1.41.0", Some(57349)), /// Be more precise when looking for live drops in a const context. (unstable, const_precise_live_drops, "1.46.0", Some(73255)), /// Allows references to types with interior mutability within constants (unstable, const_refs_to_cell, "1.51.0", Some(80384)), diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs index e74900ff747..8746d68e810 100644 --- a/library/core/src/lib.rs +++ b/library/core/src/lib.rs @@ -187,26 +187,26 @@ #![feature(unchecked_shifts)] #![feature(utf16_extra)] #![feature(utf16_extra_const)] #![feature(variant_count)] // tidy-alphabetical-end // // Language features: // tidy-alphabetical-start +#![cfg_attr(bootstrap, feature(const_fn_floating_point_arithmetic))] #![feature(abi_unadjusted)] #![feature(adt_const_params)] #![feature(allow_internal_unsafe)] #![feature(allow_internal_unstable)] #![feature(asm_const)] #![feature(auto_traits)] #![feature(cfg_sanitize)] #![feature(cfg_target_has_atomic)] #![feature(cfg_target_has_atomic_equal_alignment)] -#![feature(const_fn_floating_point_arithmetic)] #![feature(const_for)] #![feature(const_mut_refs)] #![feature(const_precise_live_drops)] #![feature(const_refs_to_cell)] #![feature(decl_macro)] #![feature(deprecated_suggestion)] #![feature(doc_cfg)] #![feature(doc_cfg_hide)] diff --git a/src/tools/clippy/tests/ui/floating_point_abs.fixed b/src/tools/clippy/tests/ui/floating_point_abs.fixed index 5312a8b29c6..33183c76972 100644 --- a/src/tools/clippy/tests/ui/floating_point_abs.fixed +++ b/src/tools/clippy/tests/ui/floating_point_abs.fixed @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal ops in constant context pub const fn in_const_context(num: f64) -> f64 { if num >= 0.0 { num } else { -num } } struct A { diff --git a/src/tools/clippy/tests/ui/floating_point_abs.rs b/src/tools/clippy/tests/ui/floating_point_abs.rs index 8619177130c..a08d5bbcef5 100644 --- a/src/tools/clippy/tests/ui/floating_point_abs.rs +++ b/src/tools/clippy/tests/ui/floating_point_abs.rs @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal ops in constant context pub const fn in_const_context(num: f64) -> f64 { if num >= 0.0 { num } else { -num } } struct A { diff --git a/src/tools/clippy/tests/ui/floating_point_abs.stderr b/src/tools/clippy/tests/ui/floating_point_abs.stderr index f5a778c5b76..0c1f68f3b7f 100644 --- a/src/tools/clippy/tests/ui/floating_point_abs.stderr +++ b/src/tools/clippy/tests/ui/floating_point_abs.stderr @@ -1,53 +1,53 @@ error: manual implementation of `abs` method - --> tests/ui/floating_point_abs.rs:15:5 + --> tests/ui/floating_point_abs.rs:14:5 | LL | if num >= 0.0 { num } else { -num } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.abs()` | = note: `-D clippy::suboptimal-flops` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::suboptimal_flops)]` error: manual implementation of `abs` method - --> tests/ui/floating_point_abs.rs:19:5 + --> tests/ui/floating_point_abs.rs:18:5 | LL | if 0.0 < num { num } else { -num } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.abs()` error: manual implementation of `abs` method - --> tests/ui/floating_point_abs.rs:23:5 + --> tests/ui/floating_point_abs.rs:22:5 | LL | if a.a > 0.0 { a.a } else { -a.a } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `a.a.abs()` error: manual implementation of `abs` method - --> tests/ui/floating_point_abs.rs:27:5 + --> tests/ui/floating_point_abs.rs:26:5 | LL | if 0.0 >= num { -num } else { num } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.abs()` error: manual implementation of `abs` method - --> tests/ui/floating_point_abs.rs:31:5 + --> tests/ui/floating_point_abs.rs:30:5 | LL | if a.a < 0.0 { -a.a } else { a.a } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `a.a.abs()` error: manual implementation of negation of `abs` method - --> tests/ui/floating_point_abs.rs:35:5 + --> tests/ui/floating_point_abs.rs:34:5 | LL | if num < 0.0 { num } else { -num } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-num.abs()` error: manual implementation of negation of `abs` method - --> tests/ui/floating_point_abs.rs:39:5 + --> tests/ui/floating_point_abs.rs:38:5 | LL | if 0.0 >= num { num } else { -num } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-num.abs()` error: manual implementation of negation of `abs` method - --> tests/ui/floating_point_abs.rs:44:12 + --> tests/ui/floating_point_abs.rs:43:12 | LL | a: if a.a >= 0.0 { -a.a } else { a.a }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-a.a.abs()` error: aborting due to 8 previous errors diff --git a/src/tools/clippy/tests/ui/floating_point_mul_add.fixed b/src/tools/clippy/tests/ui/floating_point_mul_add.fixed index 3ce2edf2c71..164aac2601a 100644 --- a/src/tools/clippy/tests/ui/floating_point_mul_add.fixed +++ b/src/tools/clippy/tests/ui/floating_point_mul_add.fixed @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal_ops in constant context pub const fn in_const_context() { let a: f64 = 1234.567; let b: f64 = 45.67834; let c: f64 = 0.0004; diff --git a/src/tools/clippy/tests/ui/floating_point_mul_add.rs b/src/tools/clippy/tests/ui/floating_point_mul_add.rs index b5e4a8db4db..ae024b7f224 100644 --- a/src/tools/clippy/tests/ui/floating_point_mul_add.rs +++ b/src/tools/clippy/tests/ui/floating_point_mul_add.rs @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal_ops in constant context pub const fn in_const_context() { let a: f64 = 1234.567; let b: f64 = 45.67834; let c: f64 = 0.0004; diff --git a/src/tools/clippy/tests/ui/floating_point_mul_add.stderr b/src/tools/clippy/tests/ui/floating_point_mul_add.stderr index 3e1a071de73..9c75909f715 100644 --- a/src/tools/clippy/tests/ui/floating_point_mul_add.stderr +++ b/src/tools/clippy/tests/ui/floating_point_mul_add.stderr @@ -1,83 +1,83 @@ error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:20:13 + --> tests/ui/floating_point_mul_add.rs:19:13 | LL | let _ = a * b + c; | ^^^^^^^^^ help: consider using: `a.mul_add(b, c)` | = note: `-D clippy::suboptimal-flops` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::suboptimal_flops)]` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:21:13 + --> tests/ui/floating_point_mul_add.rs:20:13 | LL | let _ = a * b - c; | ^^^^^^^^^ help: consider using: `a.mul_add(b, -c)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:22:13 + --> tests/ui/floating_point_mul_add.rs:21:13 | LL | let _ = c + a * b; | ^^^^^^^^^ help: consider using: `a.mul_add(b, c)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:23:13 + --> tests/ui/floating_point_mul_add.rs:22:13 | LL | let _ = c - a * b; | ^^^^^^^^^ help: consider using: `a.mul_add(-b, c)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:24:13 + --> tests/ui/floating_point_mul_add.rs:23:13 | LL | let _ = a + 2.0 * 4.0; | ^^^^^^^^^^^^^ help: consider using: `2.0f64.mul_add(4.0, a)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:25:13 + --> tests/ui/floating_point_mul_add.rs:24:13 | LL | let _ = a + 2. * 4.; | ^^^^^^^^^^^ help: consider using: `2.0f64.mul_add(4., a)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:27:13 + --> tests/ui/floating_point_mul_add.rs:26:13 | LL | let _ = (a * b) + c; | ^^^^^^^^^^^ help: consider using: `a.mul_add(b, c)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:28:13 + --> tests/ui/floating_point_mul_add.rs:27:13 | LL | let _ = c + (a * b); | ^^^^^^^^^^^ help: consider using: `a.mul_add(b, c)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:29:13 + --> tests/ui/floating_point_mul_add.rs:28:13 | LL | let _ = a * b * c + d; | ^^^^^^^^^^^^^ help: consider using: `(a * b).mul_add(c, d)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:31:13 + --> tests/ui/floating_point_mul_add.rs:30:13 | LL | let _ = a.mul_add(b, c) * a.mul_add(b, c) + a.mul_add(b, c) + c; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `a.mul_add(b, c).mul_add(a.mul_add(b, c), a.mul_add(b, c))` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:32:13 + --> tests/ui/floating_point_mul_add.rs:31:13 | LL | let _ = 1234.567_f64 * 45.67834_f64 + 0.0004_f64; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `1234.567_f64.mul_add(45.67834_f64, 0.0004_f64)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:34:13 + --> tests/ui/floating_point_mul_add.rs:33:13 | LL | let _ = (a * a + b).sqrt(); | ^^^^^^^^^^^ help: consider using: `a.mul_add(a, b)` error: multiply and add expressions can be calculated more efficiently and accurately - --> tests/ui/floating_point_mul_add.rs:37:13 + --> tests/ui/floating_point_mul_add.rs:36:13 | LL | let _ = a - (b * u as f64); | ^^^^^^^^^^^^^^^^^^ help: consider using: `b.mul_add(-(u as f64), a)` error: aborting due to 13 previous errors diff --git a/src/tools/clippy/tests/ui/floating_point_rad.fixed b/src/tools/clippy/tests/ui/floating_point_rad.fixed index a710bd9bd60..2f93d233cb4 100644 --- a/src/tools/clippy/tests/ui/floating_point_rad.fixed +++ b/src/tools/clippy/tests/ui/floating_point_rad.fixed @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal_flops in constant context pub const fn const_context() { let x = 3f32; let _ = x * 180f32 / std::f32::consts::PI; } diff --git a/src/tools/clippy/tests/ui/floating_point_rad.rs b/src/tools/clippy/tests/ui/floating_point_rad.rs index 14656f021df..9690effc4e1 100644 --- a/src/tools/clippy/tests/ui/floating_point_rad.rs +++ b/src/tools/clippy/tests/ui/floating_point_rad.rs @@ -1,9 +1,8 @@ -#![feature(const_fn_floating_point_arithmetic)] #![warn(clippy::suboptimal_flops)] /// Allow suboptimal_flops in constant context pub const fn const_context() { let x = 3f32; let _ = x * 180f32 / std::f32::consts::PI; } diff --git a/src/tools/clippy/tests/ui/floating_point_rad.stderr b/src/tools/clippy/tests/ui/floating_point_rad.stderr index 64674342c2b..b834f5374e0 100644 --- a/src/tools/clippy/tests/ui/floating_point_rad.stderr +++ b/src/tools/clippy/tests/ui/floating_point_rad.stderr @@ -1,53 +1,53 @@ error: conversion to radians can be done more accurately - --> tests/ui/floating_point_rad.rs:11:13 + --> tests/ui/floating_point_rad.rs:10:13 | LL | let _ = degrees as f64 * std::f64::consts::PI / 180.0; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(degrees as f64).to_radians()` | = note: `-D clippy::suboptimal-flops` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::suboptimal_flops)]` error: conversion to degrees can be done more accurately - --> tests/ui/floating_point_rad.rs:12:13 + --> tests/ui/floating_point_rad.rs:11:13 | LL | let _ = degrees as f64 * 180.0 / std::f64::consts::PI; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(degrees as f64).to_degrees()` error: conversion to degrees can be done more accurately - --> tests/ui/floating_point_rad.rs:17:13 + --> tests/ui/floating_point_rad.rs:16:13 | LL | let _ = x * 180f32 / std::f32::consts::PI; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.to_degrees()` error: conversion to degrees can be done more accurately - --> tests/ui/floating_point_rad.rs:18:13 + --> tests/ui/floating_point_rad.rs:17:13 | LL | let _ = 90. * 180f64 / std::f64::consts::PI; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `90.0_f64.to_degrees()` error: conversion to degrees can be done more accurately - --> tests/ui/floating_point_rad.rs:19:13 + --> tests/ui/floating_point_rad.rs:18:13 | LL | let _ = 90.5 * 180f64 / std::f64::consts::PI; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `90.5_f64.to_degrees()` error: conversion to radians can be done more accurately - --> tests/ui/floating_point_rad.rs:20:13 + --> tests/ui/floating_point_rad.rs:19:13 | LL | let _ = x * std::f32::consts::PI / 180f32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.to_radians()` error: conversion to radians can be done more accurately - --> tests/ui/floating_point_rad.rs:21:13 + --> tests/ui/floating_point_rad.rs:20:13 | LL | let _ = 90. * std::f32::consts::PI / 180f32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `90.0_f64.to_radians()` error: conversion to radians can be done more accurately - --> tests/ui/floating_point_rad.rs:22:13 + --> tests/ui/floating_point_rad.rs:21:13 | LL | let _ = 90.5 * std::f32::consts::PI / 180f32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `90.5_f64.to_radians()` error: aborting due to 8 previous errors diff --git a/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.rs b/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.rs index c7078e46fa6..efc0a1c2fba 100644 --- a/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.rs +++ b/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.rs @@ -1,11 +1,7 @@ #![feature(const_extern_fn)] -const extern "C" fn unsize(x: &[u8; 3]) -> &[u8] { x } -const unsafe extern "C" fn closure() -> fn() { || {} } -const unsafe extern "C" fn use_float() { 1.0 + 1.0; } -//~^ ERROR floating point arithmetic const extern "C" fn ptr_cast(val: *const u8) { val as usize; } //~^ ERROR pointers cannot be cast to integers fn main() {} diff --git a/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.stderr b/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.stderr index 29fa90d611c..9cdeec159be 100644 --- a/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.stderr +++ b/tests/ui/consts/const-extern-fn/const-extern-fn-min-const-fn.stderr @@ -1,22 +1,11 @@ -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const-extern-fn-min-const-fn.rs:5:42 - | -LL | const unsafe extern "C" fn use_float() { 1.0 + 1.0; } - | ^^^^^^^^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - error: pointers cannot be cast to integers during const eval - --> $DIR/const-extern-fn-min-const-fn.rs:7:48 + --> $DIR/const-extern-fn-min-const-fn.rs:3:48 | LL | const extern "C" fn ptr_cast(val: *const u8) { val as usize; } | ^^^^^^^^^^^^ | = note: at compile-time, pointers do not have an integer value = note: avoiding this restriction via `transmute`, `union`, or raw pointers leads to compile-time undefined behavior -error: aborting due to 2 previous errors +error: aborting due to 1 previous error -For more information about this error, try `rustc --explain E0658`. diff --git a/tests/ui/consts/const-extern-fn/const-extern-fn.rs b/tests/ui/consts/const-extern-fn/const-extern-fn.rs index 57f5da8d0af..4b164767064 100644 --- a/tests/ui/consts/const-extern-fn/const-extern-fn.rs +++ b/tests/ui/consts/const-extern-fn/const-extern-fn.rs @@ -12,24 +12,41 @@ const unsafe extern "C" fn bar1(val: bool) -> bool { !val } const unsafe extern "C" fn bar2(val: bool) -> bool { !val } +#[allow(improper_ctypes_definitions)] +const extern "C" fn unsize(x: &[u8; 3]) -> &[u8] { + x +} + +#[allow(improper_ctypes_definitions)] +const unsafe extern "C" fn closure() -> fn() { + || {} +} + +const unsafe extern "C" fn use_float() -> f32 { + 1.0 + 1.0 +} fn main() { let a: [u8; foo1(25) as usize] = [0; 26]; let b: [u8; foo2(25) as usize] = [0; 26]; assert_eq!(a, b); let bar1_res = unsafe { bar1(false) }; let bar2_res = unsafe { bar2(false) }; assert!(bar1_res); assert_eq!(bar1_res, bar2_res); let _foo1_cast: extern "C" fn(u8) -> u8 = foo1; let _foo2_cast: extern "C" fn(u8) -> u8 = foo2; let _bar1_cast: unsafe extern "C" fn(bool) -> bool = bar1; let _bar2_cast: unsafe extern "C" fn(bool) -> bool = bar2; + + unsize(&[0, 1, 2]); + unsafe { closure(); } + unsafe { use_float(); } } diff --git a/tests/ui/consts/const_fn_floating_point_arithmetic.gated.stderr b/tests/ui/consts/const_fn_floating_point_arithmetic.gated.stderr deleted file mode 100644 index e1b8154a287..00000000000 --- a/tests/ui/consts/const_fn_floating_point_arithmetic.gated.stderr +++ /dev/null @@ -1,8 +0,0 @@ -error: fatal error triggered by #[rustc_error] - --> $DIR/const_fn_floating_point_arithmetic.rs:20:1 - | -LL | fn main() {} - | ^^^^^^^^^ - -error: aborting due to 1 previous error - diff --git a/tests/ui/consts/const_fn_floating_point_arithmetic.rs b/tests/ui/consts/const_fn_floating_point_arithmetic.rs deleted file mode 100644 index b0d0bc6b9f4..00000000000 --- a/tests/ui/consts/const_fn_floating_point_arithmetic.rs +++ /dev/null @@ -1,20 +0,0 @@ -// gate-test-const_fn_floating_point_arithmetic - -//@ revisions: stock gated - -#![feature(rustc_attrs)] -#![cfg_attr(gated, feature(const_fn_floating_point_arithmetic))] - -const fn add(f: f32) -> f32 { f + 2.0 } -//[stock]~^ floating point arithmetic -const fn sub(f: f32) -> f32 { 2.0 - f } -//[stock]~^ floating point arithmetic -const fn mul(f: f32, g: f32) -> f32 { f * g } -//[stock]~^ floating point arithmetic -const fn div(f: f32, g: f32) -> f32 { f / g } -//[stock]~^ floating point arithmetic -const fn neg(f: f32) -> f32 { -f } -//[stock]~^ floating point arithmetic - -#[rustc_error] -fn main() {} //[gated]~ fatal error triggered by #[rustc_error] diff --git a/tests/ui/consts/const_fn_floating_point_arithmetic.stock.stderr b/tests/ui/consts/const_fn_floating_point_arithmetic.stock.stderr deleted file mode 100644 index b5b94786ebb..00000000000 --- a/tests/ui/consts/const_fn_floating_point_arithmetic.stock.stderr +++ /dev/null @@ -1,53 +0,0 @@ -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const_fn_floating_point_arithmetic.rs:8:31 - | -LL | const fn add(f: f32) -> f32 { f + 2.0 } - | ^^^^^^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const_fn_floating_point_arithmetic.rs:10:31 - | -LL | const fn sub(f: f32) -> f32 { 2.0 - f } - | ^^^^^^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const_fn_floating_point_arithmetic.rs:12:39 - | -LL | const fn mul(f: f32, g: f32) -> f32 { f * g } - | ^^^^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const_fn_floating_point_arithmetic.rs:14:39 - | -LL | const fn div(f: f32, g: f32) -> f32 { f / g } - | ^^^^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error[E0658]: floating point arithmetic is not allowed in constant functions - --> $DIR/const_fn_floating_point_arithmetic.rs:16:31 - | -LL | const fn neg(f: f32) -> f32 { -f } - | ^^ - | - = note: see issue #57241 for more information - = help: add `#![feature(const_fn_floating_point_arithmetic)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error: aborting due to 5 previous errors - -For more information about this error, try `rustc --explain E0658`. diff --git a/tests/ui/consts/const_let_eq_float.rs b/tests/ui/consts/const_let_eq_float.rs index 30d839cdc2a..c9ca6b8b7ea 100644 --- a/tests/ui/consts/const_let_eq_float.rs +++ b/tests/ui/consts/const_let_eq_float.rs @@ -1,12 +1,10 @@ //@ run-pass -#![feature(const_fn_floating_point_arithmetic)] - struct Foo(T); struct Bar { x: T } struct W(f32); struct A { a: f32 } #[allow(redundant_semicolons)] const fn basics((a,): (f32,)) -> f32 { // Deferred assignment: diff --git a/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs b/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs index bb240fb4ad6..dc653370e51 100644 --- a/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs +++ b/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs @@ -1,14 +1,14 @@ #![unstable(feature = "humans", reason = "who ever let humans program computers, we're apparently really bad at it", issue = "none")] -#![feature(const_fn_floating_point_arithmetic, foo, foo2)] +#![feature(const_refs_to_cell, foo, foo2)] #![feature(staged_api)] #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_unstable(feature="foo", issue = "none")] const fn foo() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] @@ -20,19 +20,23 @@ const fn foo2() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] // can't call non-min_const_fn const fn bar2() -> u32 { foo2() } //~ ERROR not yet stable as a const fn #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] -// Const-stable functions cannot rely on unstable const-eval features. -const fn bar3() -> u32 { (5f32 + 6f32) as u32 } -//~^ ERROR const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` +// conformity is required +const fn bar3() -> u32 { + let x = std::cell::Cell::new(0u32); + x.get() + //~^ ERROR const-stable function cannot use `#[feature(const_refs_to_cell)]` + //~| ERROR cannot call non-const fn +} // check whether this function cannot be called even with the feature gate active #[unstable(feature = "foo2", issue = "none")] const fn foo2_gated() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] // can't call non-min_const_fn diff --git a/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.stderr b/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.stderr index 7ec2508ca93..e5f8fa25b64 100644 --- a/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.stderr +++ b/tests/ui/consts/min_const_fn/min_const_fn_libstd_stability.stderr @@ -9,35 +9,44 @@ LL | const fn bar() -> u32 { foo() } error: `foo2` is not yet stable as a const fn --> $DIR/min_const_fn_libstd_stability.rs:24:26 | LL | const fn bar2() -> u32 { foo2() } | ^^^^^^ | = help: const-stable functions can only call other const-stable functions -error: const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` - --> $DIR/min_const_fn_libstd_stability.rs:29:26 +error: const-stable function cannot use `#[feature(const_refs_to_cell)]` + --> $DIR/min_const_fn_libstd_stability.rs:31:5 | -LL | const fn bar3() -> u32 { (5f32 + 6f32) as u32 } - | ^^^^^^^^^^^^^ +LL | x.get() + | ^ | help: if it is not part of the public API, make this function unstably const | LL + #[rustc_const_unstable(feature = "...", issue = "...")] -LL | const fn bar3() -> u32 { (5f32 + 6f32) as u32 } +LL | const fn bar3() -> u32 { | help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks | -LL + #[rustc_allow_const_fn_unstable(const_fn_floating_point_arithmetic)] -LL | const fn bar3() -> u32 { (5f32 + 6f32) as u32 } +LL + #[rustc_allow_const_fn_unstable(const_refs_to_cell)] +LL | const fn bar3() -> u32 { | +error[E0015]: cannot call non-const fn `Cell::::get` in constant functions + --> $DIR/min_const_fn_libstd_stability.rs:31:7 + | +LL | x.get() + | ^^^^^ + | + = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants + error: `foo2_gated` is not yet stable as a const fn - --> $DIR/min_const_fn_libstd_stability.rs:39:32 + --> $DIR/min_const_fn_libstd_stability.rs:43:32 | LL | const fn bar2_gated() -> u32 { foo2_gated() } | ^^^^^^^^^^^^ | = help: const-stable functions can only call other const-stable functions -error: aborting due to 4 previous errors +error: aborting due to 5 previous errors +For more information about this error, try `rustc --explain E0015`. diff --git a/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs b/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs index 03084c8674d..f2a54b8a13d 100644 --- a/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs +++ b/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs @@ -1,14 +1,14 @@ #![unstable(feature = "humans", reason = "who ever let humans program computers, we're apparently really bad at it", issue = "none")] -#![feature(const_fn_floating_point_arithmetic, foo, foo2)] +#![feature(const_refs_to_cell, foo, foo2)] #![feature(staged_api)] #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_unstable(feature="foo", issue = "none")] const unsafe fn foo() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] @@ -18,22 +18,16 @@ #[unstable(feature = "foo2", issue = "none")] const unsafe fn foo2() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] // can't call non-min_const_fn const unsafe fn bar2() -> u32 { unsafe { foo2() } } //~ ERROR not yet stable as a const fn -#[stable(feature = "rust1", since = "1.0.0")] -#[rustc_const_stable(feature = "rust1", since = "1.0.0")] -// conformity is required -const unsafe fn bar3() -> u32 { (5f32 + 6f32) as u32 } -//~^ ERROR const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` - // check whether this function cannot be called even with the feature gate active #[unstable(feature = "foo2", issue = "none")] const unsafe fn foo2_gated() -> u32 { 42 } #[stable(feature = "rust1", since = "1.0.0")] #[rustc_const_stable(feature = "rust1", since = "1.0.0")] // can't call non-min_const_fn const unsafe fn bar2_gated() -> u32 { unsafe { foo2_gated() } } diff --git a/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.stderr b/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.stderr index 72c1f175d1d..353b117efbc 100644 --- a/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.stderr +++ b/tests/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.stderr @@ -9,35 +9,18 @@ LL | const unsafe fn bar() -> u32 { unsafe { foo() } } error: `foo2` is not yet stable as a const fn --> $DIR/min_const_unsafe_fn_libstd_stability.rs:24:42 | LL | const unsafe fn bar2() -> u32 { unsafe { foo2() } } | ^^^^^^ | = help: const-stable functions can only call other const-stable functions -error: const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` - --> $DIR/min_const_unsafe_fn_libstd_stability.rs:29:33 - | -LL | const unsafe fn bar3() -> u32 { (5f32 + 6f32) as u32 } - | ^^^^^^^^^^^^^ - | -help: if it is not part of the public API, make this function unstably const - | -LL + #[rustc_const_unstable(feature = "...", issue = "...")] -LL | const unsafe fn bar3() -> u32 { (5f32 + 6f32) as u32 } - | -help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks - | -LL + #[rustc_allow_const_fn_unstable(const_fn_floating_point_arithmetic)] -LL | const unsafe fn bar3() -> u32 { (5f32 + 6f32) as u32 } - | - error: `foo2_gated` is not yet stable as a const fn - --> $DIR/min_const_unsafe_fn_libstd_stability.rs:39:48 + --> $DIR/min_const_unsafe_fn_libstd_stability.rs:33:48 | LL | const unsafe fn bar2_gated() -> u32 { unsafe { foo2_gated() } } | ^^^^^^^^^^^^ | = help: const-stable functions can only call other const-stable functions -error: aborting due to 4 previous errors +error: aborting due to 3 previous errors diff --git a/tests/ui/internal/internal-unstable-const.rs b/tests/ui/internal/internal-unstable-const.rs deleted file mode 100644 index 4ec2426dfee..00000000000 --- a/tests/ui/internal/internal-unstable-const.rs +++ /dev/null @@ -1,13 +0,0 @@ -// Don't allow unstable features in stable functions without `allow_internal_unstable`. - -#![stable(feature = "rust1", since = "1.0.0")] -#![feature(staged_api)] -#![feature(const_fn_floating_point_arithmetic)] - -#[stable(feature = "rust1", since = "1.0.0")] -#[rustc_const_stable(feature = "rust1", since = "1.0.0")] -pub const fn foo() -> f32 { - 1.0 + 1.0 //~ ERROR const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` -} - -fn main() {} diff --git a/tests/ui/internal/internal-unstable-const.stderr b/tests/ui/internal/internal-unstable-const.stderr deleted file mode 100644 index ed9196d2b63..00000000000 --- a/tests/ui/internal/internal-unstable-const.stderr +++ /dev/null @@ -1,19 +0,0 @@ -error: const-stable function cannot use `#[feature(const_fn_floating_point_arithmetic)]` - --> $DIR/internal-unstable-const.rs:10:5 - | -LL | 1.0 + 1.0 - | ^^^^^^^^^ - | -help: if it is not part of the public API, make this function unstably const - | -LL + #[rustc_const_unstable(feature = "...", issue = "...")] -LL | pub const fn foo() -> f32 { - | -help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks - | -LL + #[rustc_allow_const_fn_unstable(const_fn_floating_point_arithmetic)] -LL | pub const fn foo() -> f32 { - | - -error: aborting due to 1 previous error -