diff options
| -rw-r--r-- | compiler/rustc_builtin_macros/messages.ftl | 3 | ||||
| -rw-r--r-- | compiler/rustc_builtin_macros/src/asm.rs | 39 | ||||
| -rw-r--r-- | compiler/rustc_builtin_macros/src/errors.rs | 9 | ||||
| -rw-r--r-- | tests/ui/asm/parse-error.rs | 15 | ||||
| -rw-r--r-- | tests/ui/asm/parse-error.stderr | 40 |
5 files changed, 91 insertions, 15 deletions
diff --git a/compiler/rustc_builtin_macros/messages.ftl b/compiler/rustc_builtin_macros/messages.ftl index ae3cce40f5d..9695df9c87e 100644 --- a/compiler/rustc_builtin_macros/messages.ftl +++ b/compiler/rustc_builtin_macros/messages.ftl @@ -196,6 +196,9 @@ builtin_macros_format_use_positional = consider using a positional formatting ar builtin_macros_global_asm_clobber_abi = `clobber_abi` cannot be used with `global_asm!` +builtin_macros_global_asm_unsupported_operand = the `{$symbol}` operand cannot be used with `global_asm!` + .label = the `{$symbol}` operand is not meaningful for global-scoped inline assembly, remove it + builtin_macros_global_asm_unsupported_option = the `{$symbol}` option cannot be used with `global_asm!` .label = the `{$symbol}` option is not meaningful for global-scoped inline assembly .suggestion = remove this option diff --git a/compiler/rustc_builtin_macros/src/asm.rs b/compiler/rustc_builtin_macros/src/asm.rs index 06a49dc72b6..17439dd3e3e 100644 --- a/compiler/rustc_builtin_macros/src/asm.rs +++ b/compiler/rustc_builtin_macros/src/asm.rs @@ -28,6 +28,29 @@ pub struct AsmArgs { pub options_spans: Vec<Span>, } +/// Used for better error messages when operand types are used that are not +/// supported by the current macro (e.g. `in` or `out` for `global_asm!`) +/// +/// returns +/// +/// - `Ok(true)` if the current token matches the keyword, and was expected +/// - `Ok(false)` if the current token does not match the keyword +/// - `Err(_)` if the current token matches the keyword, but was not expected +fn eat_operand_keyword<'a>(p: &mut Parser<'a>, symbol: Symbol, expect: bool) -> PResult<'a, bool> { + if expect { + Ok(p.eat_keyword(symbol)) + } else { + let span = p.token.span; + if p.eat_keyword_noexpect(symbol) { + // in gets printed as `r#in` otherwise + let symbol = if symbol == kw::In { "in" } else { symbol.as_str() }; + Err(p.dcx().create_err(errors::GlobalAsmUnsupportedOperand { span, symbol })) + } else { + Ok(false) + } + } +} + fn parse_args<'a>( ecx: &ExtCtxt<'a>, sp: Span, @@ -105,7 +128,7 @@ pub fn parse_asm_args<'a>( }; let mut explicit_reg = false; - let op = if !is_global_asm && p.eat_keyword(kw::In) { + let op = if eat_operand_keyword(p, kw::In, !is_global_asm)? { let reg = parse_reg(p, &mut explicit_reg)?; if p.eat_keyword(kw::Underscore) { let err = dcx.create_err(errors::AsmUnderscoreInput { span: p.token.span }); @@ -113,15 +136,15 @@ pub fn parse_asm_args<'a>( } let expr = p.parse_expr()?; ast::InlineAsmOperand::In { reg, expr } - } else if !is_global_asm && p.eat_keyword(sym::out) { + } else if eat_operand_keyword(p, sym::out, !is_global_asm)? { let reg = parse_reg(p, &mut explicit_reg)?; let expr = if p.eat_keyword(kw::Underscore) { None } else { Some(p.parse_expr()?) }; ast::InlineAsmOperand::Out { reg, expr, late: false } - } else if !is_global_asm && p.eat_keyword(sym::lateout) { + } else if eat_operand_keyword(p, sym::lateout, !is_global_asm)? { let reg = parse_reg(p, &mut explicit_reg)?; let expr = if p.eat_keyword(kw::Underscore) { None } else { Some(p.parse_expr()?) }; ast::InlineAsmOperand::Out { reg, expr, late: true } - } else if !is_global_asm && p.eat_keyword(sym::inout) { + } else if eat_operand_keyword(p, sym::inout, !is_global_asm)? { let reg = parse_reg(p, &mut explicit_reg)?; if p.eat_keyword(kw::Underscore) { let err = dcx.create_err(errors::AsmUnderscoreInput { span: p.token.span }); @@ -135,7 +158,7 @@ pub fn parse_asm_args<'a>( } else { ast::InlineAsmOperand::InOut { reg, expr, late: false } } - } else if !is_global_asm && p.eat_keyword(sym::inlateout) { + } else if eat_operand_keyword(p, sym::inlateout, !is_global_asm)? { let reg = parse_reg(p, &mut explicit_reg)?; if p.eat_keyword(kw::Underscore) { let err = dcx.create_err(errors::AsmUnderscoreInput { span: p.token.span }); @@ -149,6 +172,9 @@ pub fn parse_asm_args<'a>( } else { ast::InlineAsmOperand::InOut { reg, expr, late: true } } + } else if eat_operand_keyword(p, sym::label, !is_global_asm)? { + let block = p.parse_block()?; + ast::InlineAsmOperand::Label { block } } else if p.eat_keyword(kw::Const) { let anon_const = p.parse_expr_anon_const()?; ast::InlineAsmOperand::Const { anon_const } @@ -164,9 +190,6 @@ pub fn parse_asm_args<'a>( path: path.clone(), }; ast::InlineAsmOperand::Sym { sym } - } else if !is_global_asm && p.eat_keyword(sym::label) { - let block = p.parse_block()?; - ast::InlineAsmOperand::Label { block } } else if allow_templates { let template = p.parse_expr()?; // If it can't possibly expand to a string, provide diagnostics here to include other diff --git a/compiler/rustc_builtin_macros/src/errors.rs b/compiler/rustc_builtin_macros/src/errors.rs index 93fc9bcb9d2..6ca43441e05 100644 --- a/compiler/rustc_builtin_macros/src/errors.rs +++ b/compiler/rustc_builtin_macros/src/errors.rs @@ -852,6 +852,15 @@ pub(crate) struct GlobalAsmUnsupportedOption { } #[derive(Diagnostic)] +#[diag(builtin_macros_global_asm_unsupported_operand)] +pub(crate) struct GlobalAsmUnsupportedOperand<'a> { + #[primary_span] + #[label] + pub(crate) span: Span, + pub(crate) symbol: &'a str, +} + +#[derive(Diagnostic)] #[diag(builtin_macros_test_runner_invalid)] pub(crate) struct TestRunnerInvalid { #[primary_span] diff --git a/tests/ui/asm/parse-error.rs b/tests/ui/asm/parse-error.rs index 9dec3a1c394..16ae0282864 100644 --- a/tests/ui/asm/parse-error.rs +++ b/tests/ui/asm/parse-error.rs @@ -146,5 +146,16 @@ global_asm!(format!("{{{}}}", 0), const FOO); //~^ ERROR asm template must be a string literal global_asm!("{1}", format!("{{{}}}", 0), const FOO, const BAR); //~^ ERROR asm template must be a string literal -global_asm!("{}", label {}); -//~^ ERROR expected operand, options, or additional template string + +global_asm!("{}", in(reg)); +//~^ ERROR the `in` operand cannot be used with `global_asm!` +global_asm!("{}", out(reg)); +//~^ ERROR the `out` operand cannot be used with `global_asm!` +global_asm!("{}", lateout(reg)); +//~^ ERROR the `lateout` operand cannot be used with `global_asm!` +global_asm!("{}", inout(reg)); +//~^ ERROR the `inout` operand cannot be used with `global_asm!` +global_asm!("{}", inlateout(reg)); +//~^ ERROR the `inlateout` operand cannot be used with `global_asm!` +global_asm!("{}", label(reg)); +//~^ ERROR the `label` operand cannot be used with `global_asm!` diff --git a/tests/ui/asm/parse-error.stderr b/tests/ui/asm/parse-error.stderr index e9ecd712bc3..f5f8d537d86 100644 --- a/tests/ui/asm/parse-error.stderr +++ b/tests/ui/asm/parse-error.stderr @@ -380,11 +380,41 @@ LL | global_asm!("{1}", format!("{{{}}}", 0), const FOO, const BAR); | = note: this error originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info) -error: expected operand, options, or additional template string - --> $DIR/parse-error.rs:149:19 +error: the `in` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:150:19 + | +LL | global_asm!("{}", in(reg)); + | ^^ the `in` operand is not meaningful for global-scoped inline assembly, remove it + +error: the `out` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:152:19 + | +LL | global_asm!("{}", out(reg)); + | ^^^ the `out` operand is not meaningful for global-scoped inline assembly, remove it + +error: the `lateout` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:154:19 + | +LL | global_asm!("{}", lateout(reg)); + | ^^^^^^^ the `lateout` operand is not meaningful for global-scoped inline assembly, remove it + +error: the `inout` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:156:19 + | +LL | global_asm!("{}", inout(reg)); + | ^^^^^ the `inout` operand is not meaningful for global-scoped inline assembly, remove it + +error: the `inlateout` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:158:19 + | +LL | global_asm!("{}", inlateout(reg)); + | ^^^^^^^^^ the `inlateout` operand is not meaningful for global-scoped inline assembly, remove it + +error: the `label` operand cannot be used with `global_asm!` + --> $DIR/parse-error.rs:160:19 | -LL | global_asm!("{}", label {}); - | ^^^^^^^^ expected operand, options, or additional template string +LL | global_asm!("{}", label(reg)); + | ^^^^^ the `label` operand is not meaningful for global-scoped inline assembly, remove it error[E0435]: attempt to use a non-constant value in a constant --> $DIR/parse-error.rs:39:37 @@ -441,6 +471,6 @@ help: consider using `const` instead of `let` LL | const bar: /* Type */ = 0; | ~~~~~ ++++++++++++ -error: aborting due to 67 previous errors +error: aborting due to 72 previous errors For more information about this error, try `rustc --explain E0435`. |