Rollup merge of #28443 - GuillaumeGomez:error_codes, r=Manishearth
r? @Manishearth
This commit is contained in:
commit
f1473b6c00
7 changed files with 133 additions and 65 deletions
|
@ -464,40 +464,36 @@ impl<'a, 'tcx> CheckLoanCtxt<'a, 'tcx> {
|
||||||
|
|
||||||
match (new_loan.kind, old_loan.kind) {
|
match (new_loan.kind, old_loan.kind) {
|
||||||
(ty::MutBorrow, ty::MutBorrow) => {
|
(ty::MutBorrow, ty::MutBorrow) => {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, new_loan.span, E0499,
|
||||||
new_loan.span,
|
"cannot borrow `{}`{} as mutable \
|
||||||
&format!("cannot borrow `{}`{} as mutable \
|
more than once at a time",
|
||||||
more than once at a time",
|
nl, new_loan_msg);
|
||||||
nl, new_loan_msg))
|
|
||||||
}
|
}
|
||||||
|
|
||||||
(ty::UniqueImmBorrow, _) => {
|
(ty::UniqueImmBorrow, _) => {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, new_loan.span, E0500,
|
||||||
new_loan.span,
|
"closure requires unique access to `{}` \
|
||||||
&format!("closure requires unique access to `{}` \
|
but {} is already borrowed{}",
|
||||||
but {} is already borrowed{}",
|
nl, ol_pronoun, old_loan_msg);
|
||||||
nl, ol_pronoun, old_loan_msg));
|
|
||||||
}
|
}
|
||||||
|
|
||||||
(_, ty::UniqueImmBorrow) => {
|
(_, ty::UniqueImmBorrow) => {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, new_loan.span, E0501,
|
||||||
new_loan.span,
|
"cannot borrow `{}`{} as {} because \
|
||||||
&format!("cannot borrow `{}`{} as {} because \
|
previous closure requires unique access",
|
||||||
previous closure requires unique access",
|
nl, new_loan_msg, new_loan.kind.to_user_str());
|
||||||
nl, new_loan_msg, new_loan.kind.to_user_str()));
|
|
||||||
}
|
}
|
||||||
|
|
||||||
(_, _) => {
|
(_, _) => {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, new_loan.span, E0502,
|
||||||
new_loan.span,
|
"cannot borrow `{}`{} as {} because \
|
||||||
&format!("cannot borrow `{}`{} as {} because \
|
{} is also borrowed as {}{}",
|
||||||
{} is also borrowed as {}{}",
|
nl,
|
||||||
nl,
|
new_loan_msg,
|
||||||
new_loan_msg,
|
new_loan.kind.to_user_str(),
|
||||||
new_loan.kind.to_user_str(),
|
ol_pronoun,
|
||||||
ol_pronoun,
|
old_loan.kind.to_user_str(),
|
||||||
old_loan.kind.to_user_str(),
|
old_loan_msg);
|
||||||
old_loan_msg));
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -617,11 +613,9 @@ impl<'a, 'tcx> CheckLoanCtxt<'a, 'tcx> {
|
||||||
match self.analyze_restrictions_on_use(id, copy_path, ty::ImmBorrow) {
|
match self.analyze_restrictions_on_use(id, copy_path, ty::ImmBorrow) {
|
||||||
UseOk => { }
|
UseOk => { }
|
||||||
UseWhileBorrowed(loan_path, loan_span) => {
|
UseWhileBorrowed(loan_path, loan_span) => {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, span, E0503,
|
||||||
span,
|
"cannot use `{}` because it was mutably borrowed",
|
||||||
&format!("cannot use `{}` because it was mutably borrowed",
|
&self.bccx.loan_path_to_string(copy_path));
|
||||||
&self.bccx.loan_path_to_string(copy_path))
|
|
||||||
);
|
|
||||||
self.bccx.span_note(
|
self.bccx.span_note(
|
||||||
loan_span,
|
loan_span,
|
||||||
&format!("borrow of `{}` occurs here",
|
&format!("borrow of `{}` occurs here",
|
||||||
|
@ -642,18 +636,19 @@ impl<'a, 'tcx> CheckLoanCtxt<'a, 'tcx> {
|
||||||
match self.analyze_restrictions_on_use(id, move_path, ty::MutBorrow) {
|
match self.analyze_restrictions_on_use(id, move_path, ty::MutBorrow) {
|
||||||
UseOk => { }
|
UseOk => { }
|
||||||
UseWhileBorrowed(loan_path, loan_span) => {
|
UseWhileBorrowed(loan_path, loan_span) => {
|
||||||
let err_message = match move_kind {
|
match move_kind {
|
||||||
move_data::Captured =>
|
move_data::Captured =>
|
||||||
format!("cannot move `{}` into closure because it is borrowed",
|
span_err!(self.bccx, span, E0504,
|
||||||
&self.bccx.loan_path_to_string(move_path)),
|
"cannot move `{}` into closure because it is borrowed",
|
||||||
|
&self.bccx.loan_path_to_string(move_path)),
|
||||||
move_data::Declared |
|
move_data::Declared |
|
||||||
move_data::MoveExpr |
|
move_data::MoveExpr |
|
||||||
move_data::MovePat =>
|
move_data::MovePat =>
|
||||||
format!("cannot move out of `{}` because it is borrowed",
|
span_err!(self.bccx, span, E0505,
|
||||||
&self.bccx.loan_path_to_string(move_path))
|
"cannot move out of `{}` because it is borrowed",
|
||||||
|
&self.bccx.loan_path_to_string(move_path))
|
||||||
};
|
};
|
||||||
|
|
||||||
self.bccx.span_err(span, &err_message[..]);
|
|
||||||
self.bccx.span_note(
|
self.bccx.span_note(
|
||||||
loan_span,
|
loan_span,
|
||||||
&format!("borrow of `{}` occurs here",
|
&format!("borrow of `{}` occurs here",
|
||||||
|
@ -820,10 +815,9 @@ impl<'a, 'tcx> CheckLoanCtxt<'a, 'tcx> {
|
||||||
span: Span,
|
span: Span,
|
||||||
loan_path: &LoanPath<'tcx>,
|
loan_path: &LoanPath<'tcx>,
|
||||||
loan: &Loan) {
|
loan: &Loan) {
|
||||||
self.bccx.span_err(
|
span_err!(self.bccx, span, E0506,
|
||||||
span,
|
"cannot assign to `{}` because it is borrowed",
|
||||||
&format!("cannot assign to `{}` because it is borrowed",
|
self.bccx.loan_path_to_string(loan_path));
|
||||||
self.bccx.loan_path_to_string(loan_path)));
|
|
||||||
self.bccx.span_note(
|
self.bccx.span_note(
|
||||||
loan.span,
|
loan.span,
|
||||||
&format!("borrow of `{}` occurs here",
|
&format!("borrow of `{}` occurs here",
|
||||||
|
|
|
@ -119,18 +119,18 @@ fn report_cannot_move_out_of<'a, 'tcx>(bccx: &BorrowckCtxt<'a, 'tcx>,
|
||||||
mc::cat_deref(_, _, mc::Implicit(..)) |
|
mc::cat_deref(_, _, mc::Implicit(..)) |
|
||||||
mc::cat_deref(_, _, mc::UnsafePtr(..)) |
|
mc::cat_deref(_, _, mc::UnsafePtr(..)) |
|
||||||
mc::cat_static_item => {
|
mc::cat_static_item => {
|
||||||
bccx.span_err(move_from.span,
|
span_err!(bccx, move_from.span, E0507,
|
||||||
&format!("cannot move out of {}",
|
"cannot move out of {}",
|
||||||
move_from.descriptive_string(bccx.tcx)));
|
move_from.descriptive_string(bccx.tcx));
|
||||||
}
|
}
|
||||||
|
|
||||||
mc::cat_interior(ref b, mc::InteriorElement(Kind::Index, _)) => {
|
mc::cat_interior(ref b, mc::InteriorElement(Kind::Index, _)) => {
|
||||||
let expr = bccx.tcx.map.expect_expr(move_from.id);
|
let expr = bccx.tcx.map.expect_expr(move_from.id);
|
||||||
if let hir::ExprIndex(..) = expr.node {
|
if let hir::ExprIndex(..) = expr.node {
|
||||||
bccx.span_err(move_from.span,
|
span_err!(bccx, move_from.span, E0508,
|
||||||
&format!("cannot move out of type `{}`, \
|
"cannot move out of type `{}`, \
|
||||||
a non-copy fixed-size array",
|
a non-copy fixed-size array",
|
||||||
b.ty));
|
b.ty);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -139,11 +139,10 @@ fn report_cannot_move_out_of<'a, 'tcx>(bccx: &BorrowckCtxt<'a, 'tcx>,
|
||||||
match b.ty.sty {
|
match b.ty.sty {
|
||||||
ty::TyStruct(def, _) |
|
ty::TyStruct(def, _) |
|
||||||
ty::TyEnum(def, _) if def.has_dtor() => {
|
ty::TyEnum(def, _) if def.has_dtor() => {
|
||||||
bccx.span_err(
|
span_err!(bccx, move_from.span, E0509,
|
||||||
move_from.span,
|
"cannot move out of type `{}`, \
|
||||||
&format!("cannot move out of type `{}`, \
|
which defines the `Drop` trait",
|
||||||
which defines the `Drop` trait",
|
b.ty);
|
||||||
b.ty));
|
|
||||||
},
|
},
|
||||||
_ => {
|
_ => {
|
||||||
bccx.span_bug(move_from.span, "this path should not cause illegal move")
|
bccx.span_bug(move_from.span, "this path should not cause illegal move")
|
||||||
|
|
|
@ -803,6 +803,10 @@ impl<'a, 'tcx> BorrowckCtxt<'a, 'tcx> {
|
||||||
self.tcx.sess.span_err(s, m);
|
self.tcx.sess.span_err(s, m);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub fn span_err_with_code(&self, s: Span, msg: &str, code: &str) {
|
||||||
|
self.tcx.sess.span_err_with_code(s, msg, code);
|
||||||
|
}
|
||||||
|
|
||||||
pub fn span_bug(&self, s: Span, m: &str) {
|
pub fn span_bug(&self, s: Span, m: &str) {
|
||||||
self.tcx.sess.span_bug(s, m);
|
self.tcx.sess.span_bug(s, m);
|
||||||
}
|
}
|
||||||
|
|
|
@ -263,12 +263,50 @@ fn mutable() {
|
||||||
You can read more about cell types in the API documentation:
|
You can read more about cell types in the API documentation:
|
||||||
|
|
||||||
https://doc.rust-lang.org/std/cell/
|
https://doc.rust-lang.org/std/cell/
|
||||||
"##
|
"##,
|
||||||
|
|
||||||
|
E0499: r##"
|
||||||
|
A variable was borrowed as mutable more than once. Erroneous code example:
|
||||||
|
|
||||||
|
```
|
||||||
|
let mut i = 0;
|
||||||
|
let mut x = &mut i;
|
||||||
|
let mut a = &mut i;
|
||||||
|
// error: cannot borrow `i` as mutable more than once at a time
|
||||||
|
```
|
||||||
|
|
||||||
|
Please note that in rust, you can either have many immutable references, or one
|
||||||
|
mutable reference. Take a look at
|
||||||
|
https://doc.rust-lang.org/stable/book/references-and-borrowing.html for more
|
||||||
|
information. Example:
|
||||||
|
|
||||||
|
|
||||||
|
```
|
||||||
|
let mut i = 0;
|
||||||
|
let mut x = &mut i; // ok!
|
||||||
|
|
||||||
|
// or:
|
||||||
|
let mut i = 0;
|
||||||
|
let a = &i; // ok!
|
||||||
|
let b = &i; // still ok!
|
||||||
|
let c = &i; // still ok!
|
||||||
|
```
|
||||||
|
"##,
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
register_diagnostics! {
|
register_diagnostics! {
|
||||||
E0385, // {} in an aliasable location
|
E0385, // {} in an aliasable location
|
||||||
E0388, // {} in a static location
|
E0388, // {} in a static location
|
||||||
E0389 // {} in a `&` reference
|
E0389, // {} in a `&` reference
|
||||||
|
E0500, // closure requires unique access to `..` but .. is already borrowed
|
||||||
|
E0501, // cannot borrow `..`.. as .. because previous closure requires unique access
|
||||||
|
E0502, // cannot borrow `..`.. as .. because .. is also borrowed as ...
|
||||||
|
E0503, // cannot use `..` because it was mutably borrowed
|
||||||
|
E0504, // cannot move `..` into closure because it is borrowed
|
||||||
|
E0505, // cannot move out of `..` because it is borrowed
|
||||||
|
E0506, // cannot assign to `..` because it is borrowed
|
||||||
|
E0507, // cannot move out of ..
|
||||||
|
E0508, // cannot move out of type `..`, a non-copy fixed-size array
|
||||||
|
E0509, // cannot move out of type `..`, which defines the `Drop` trait
|
||||||
}
|
}
|
||||||
|
|
21
src/librustc_trans/diagnostics.rs
Normal file
21
src/librustc_trans/diagnostics.rs
Normal file
|
@ -0,0 +1,21 @@
|
||||||
|
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
|
||||||
|
// file at the top-level directory of this distribution and at
|
||||||
|
// http://rust-lang.org/COPYRIGHT.
|
||||||
|
//
|
||||||
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||||
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||||||
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||||||
|
// option. This file may not be copied, modified, or distributed
|
||||||
|
// except according to those terms.
|
||||||
|
|
||||||
|
#![allow(non_snake_case)]
|
||||||
|
|
||||||
|
register_long_diagnostics! {
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
register_diagnostics! {
|
||||||
|
E0510, // invalid use of `return_address` intrinsic: function does not use out pointer
|
||||||
|
E0511, // invalid monomorphization of `{}` intrinsic
|
||||||
|
E0512, // transmute called on types with potentially different sizes...
|
||||||
|
}
|
|
@ -80,6 +80,8 @@ pub mod back {
|
||||||
pub mod msvc;
|
pub mod msvc;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub mod diagnostics;
|
||||||
|
|
||||||
pub mod trans;
|
pub mod trans;
|
||||||
pub mod save;
|
pub mod save;
|
||||||
|
|
||||||
|
|
|
@ -44,6 +44,9 @@ use syntax::ast;
|
||||||
use syntax::ptr::P;
|
use syntax::ptr::P;
|
||||||
use syntax::parse::token;
|
use syntax::parse::token;
|
||||||
|
|
||||||
|
use rustc::session::Session;
|
||||||
|
use syntax::codemap::Span;
|
||||||
|
|
||||||
use std::cmp::Ordering;
|
use std::cmp::Ordering;
|
||||||
|
|
||||||
pub fn get_simple_intrinsic(ccx: &CrateContext, item: &hir::ForeignItem) -> Option<ValueRef> {
|
pub fn get_simple_intrinsic(ccx: &CrateContext, item: &hir::ForeignItem) -> Option<ValueRef> {
|
||||||
|
@ -99,6 +102,10 @@ pub fn get_simple_intrinsic(ccx: &CrateContext, item: &hir::ForeignItem) -> Opti
|
||||||
Some(ccx.get_intrinsic(&name))
|
Some(ccx.get_intrinsic(&name))
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub fn span_transmute_size_error(a: &Session, b: Span, msg: &str) {
|
||||||
|
span_err!(a, b, E0512, "{}", msg);
|
||||||
|
}
|
||||||
|
|
||||||
/// Performs late verification that intrinsics are used correctly. At present,
|
/// Performs late verification that intrinsics are used correctly. At present,
|
||||||
/// the only intrinsic that needs such verification is `transmute`.
|
/// the only intrinsic that needs such verification is `transmute`.
|
||||||
pub fn check_intrinsics(ccx: &CrateContext) {
|
pub fn check_intrinsics(ccx: &CrateContext) {
|
||||||
|
@ -127,8 +134,7 @@ pub fn check_intrinsics(ccx: &CrateContext) {
|
||||||
last_failing_id = Some(transmute_restriction.id);
|
last_failing_id = Some(transmute_restriction.id);
|
||||||
|
|
||||||
if transmute_restriction.original_from != transmute_restriction.substituted_from {
|
if transmute_restriction.original_from != transmute_restriction.substituted_from {
|
||||||
ccx.sess().span_err(
|
span_transmute_size_error(ccx.sess(), transmute_restriction.span,
|
||||||
transmute_restriction.span,
|
|
||||||
&format!("transmute called on types with potentially different sizes: \
|
&format!("transmute called on types with potentially different sizes: \
|
||||||
{} (could be {} bit{}) to {} (could be {} bit{})",
|
{} (could be {} bit{}) to {} (could be {} bit{})",
|
||||||
transmute_restriction.original_from,
|
transmute_restriction.original_from,
|
||||||
|
@ -138,8 +144,7 @@ pub fn check_intrinsics(ccx: &CrateContext) {
|
||||||
to_type_size as usize,
|
to_type_size as usize,
|
||||||
if to_type_size == 1 {""} else {"s"}));
|
if to_type_size == 1 {""} else {"s"}));
|
||||||
} else {
|
} else {
|
||||||
ccx.sess().span_err(
|
span_transmute_size_error(ccx.sess(), transmute_restriction.span,
|
||||||
transmute_restriction.span,
|
|
||||||
&format!("transmute called on types with different sizes: \
|
&format!("transmute called on types with different sizes: \
|
||||||
{} ({} bit{}) to {} ({} bit{})",
|
{} ({} bit{}) to {} ({} bit{})",
|
||||||
transmute_restriction.original_from,
|
transmute_restriction.original_from,
|
||||||
|
@ -798,9 +803,9 @@ pub fn trans_intrinsic_call<'a, 'blk, 'tcx>(mut bcx: Block<'blk, 'tcx>,
|
||||||
|
|
||||||
(_, "return_address") => {
|
(_, "return_address") => {
|
||||||
if !fcx.caller_expects_out_pointer {
|
if !fcx.caller_expects_out_pointer {
|
||||||
tcx.sess.span_err(call_info.span,
|
span_err!(tcx.sess, call_info.span, E0510,
|
||||||
"invalid use of `return_address` intrinsic: function \
|
"invalid use of `return_address` intrinsic: function \
|
||||||
does not use out pointer");
|
does not use out pointer");
|
||||||
C_null(Type::i8p(ccx))
|
C_null(Type::i8p(ccx))
|
||||||
} else {
|
} else {
|
||||||
PointerCast(bcx, llvm::get_param(fcx.llfn, 0), Type::i8p(ccx))
|
PointerCast(bcx, llvm::get_param(fcx.llfn, 0), Type::i8p(ccx))
|
||||||
|
@ -1439,6 +1444,10 @@ fn get_rust_try_fn<'a, 'tcx>(fcx: &FunctionContext<'a, 'tcx>,
|
||||||
return rust_try
|
return rust_try
|
||||||
}
|
}
|
||||||
|
|
||||||
|
fn span_invalid_monomorphization_error(a: &Session, b: Span, c: &str) {
|
||||||
|
span_err!(a, b, E0511, "{}", c);
|
||||||
|
}
|
||||||
|
|
||||||
fn generic_simd_intrinsic<'blk, 'tcx, 'a>
|
fn generic_simd_intrinsic<'blk, 'tcx, 'a>
|
||||||
(bcx: Block<'blk, 'tcx>,
|
(bcx: Block<'blk, 'tcx>,
|
||||||
name: &str,
|
name: &str,
|
||||||
|
@ -1457,10 +1466,11 @@ fn generic_simd_intrinsic<'blk, 'tcx, 'a>
|
||||||
emit_error!($msg, )
|
emit_error!($msg, )
|
||||||
};
|
};
|
||||||
($msg: tt, $($fmt: tt)*) => {
|
($msg: tt, $($fmt: tt)*) => {
|
||||||
bcx.sess().span_err(call_info.span,
|
span_invalid_monomorphization_error(
|
||||||
&format!(concat!("invalid monomorphization of `{}` intrinsic: ",
|
bcx.sess(), call_info.span,
|
||||||
$msg),
|
&format!(concat!("invalid monomorphization of `{}` intrinsic: ",
|
||||||
name, $($fmt)*));
|
$msg),
|
||||||
|
name, $($fmt)*));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
macro_rules! require {
|
macro_rules! require {
|
||||||
|
|
Loading…
Reference in a new issue