From f32870927604ab4dbf12ff84681b77e65a096940 Mon Sep 17 00:00:00 2001 From: Jonathan Brouwer Date: Thu, 28 Aug 2025 20:03:58 +0200 Subject: Improve error messages around invalid literals in attribute arguments Signed-off-by: Jonathan Brouwer --- compiler/rustc_session/src/errors.rs | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) (limited to 'compiler/rustc_session/src/errors.rs') diff --git a/compiler/rustc_session/src/errors.rs b/compiler/rustc_session/src/errors.rs index 34da54a20bf..50bc7348dc9 100644 --- a/compiler/rustc_session/src/errors.rs +++ b/compiler/rustc_session/src/errors.rs @@ -384,6 +384,10 @@ pub fn report_lit_error( lit: token::Lit, span: Span, ) -> ErrorGuaranteed { + create_lit_error(psess, err, lit, span).emit() +} + +pub fn create_lit_error(psess: &ParseSess, err: LitError, lit: token::Lit, span: Span) -> Diag<'_> { // Checks if `s` looks like i32 or u1234 etc. fn looks_like_width_suffix(first_chars: &[char], s: &str) -> bool { s.len() > 1 && s.starts_with(first_chars) && s[1..].chars().all(|c| c.is_ascii_digit()) @@ -414,32 +418,32 @@ pub fn report_lit_error( let dcx = psess.dcx(); match err { LitError::InvalidSuffix(suffix) => { - dcx.emit_err(InvalidLiteralSuffix { span, kind: lit.kind.descr(), suffix }) + dcx.create_err(InvalidLiteralSuffix { span, kind: lit.kind.descr(), suffix }) } LitError::InvalidIntSuffix(suffix) => { let suf = suffix.as_str(); if looks_like_width_suffix(&['i', 'u'], suf) { // If it looks like a width, try to be helpful. - dcx.emit_err(InvalidIntLiteralWidth { span, width: suf[1..].into() }) + dcx.create_err(InvalidIntLiteralWidth { span, width: suf[1..].into() }) } else if let Some(fixed) = fix_base_capitalisation(lit.symbol.as_str(), suf) { - dcx.emit_err(InvalidNumLiteralBasePrefix { span, fixed }) + dcx.create_err(InvalidNumLiteralBasePrefix { span, fixed }) } else { - dcx.emit_err(InvalidNumLiteralSuffix { span, suffix: suf.to_string() }) + dcx.create_err(InvalidNumLiteralSuffix { span, suffix: suf.to_string() }) } } LitError::InvalidFloatSuffix(suffix) => { let suf = suffix.as_str(); if looks_like_width_suffix(&['f'], suf) { // If it looks like a width, try to be helpful. - dcx.emit_err(InvalidFloatLiteralWidth { span, width: suf[1..].to_string() }) + dcx.create_err(InvalidFloatLiteralWidth { span, width: suf[1..].to_string() }) } else { - dcx.emit_err(InvalidFloatLiteralSuffix { span, suffix: suf.to_string() }) + dcx.create_err(InvalidFloatLiteralSuffix { span, suffix: suf.to_string() }) } } LitError::NonDecimalFloat(base) => match base { - 16 => dcx.emit_err(HexadecimalFloatLiteralNotSupported { span }), - 8 => dcx.emit_err(OctalFloatLiteralNotSupported { span }), - 2 => dcx.emit_err(BinaryFloatLiteralNotSupported { span }), + 16 => dcx.create_err(HexadecimalFloatLiteralNotSupported { span }), + 8 => dcx.create_err(OctalFloatLiteralNotSupported { span }), + 2 => dcx.create_err(BinaryFloatLiteralNotSupported { span }), _ => unreachable!(), }, LitError::IntTooLarge(base) => { @@ -450,7 +454,7 @@ pub fn report_lit_error( 16 => format!("{max:#x}"), _ => format!("{max}"), }; - dcx.emit_err(IntLiteralTooLarge { span, limit }) + dcx.create_err(IntLiteralTooLarge { span, limit }) } } } -- cgit 1.4.1-3-g733a5