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Fix an ICE parsing a malformed literal in concat_bytes!.

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Fixes #104769.
This commit is contained in:
Nicholas Nethercote 2022-11-29 11:50:03 +11:00
parent 2585bcea0b
commit bf4a62c381
3 changed files with 29 additions and 1 deletions
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6
compiler/rustc_builtin_macros/src/concat_bytes.rs
View File

@ -2,6 +2,7 @@ use rustc_ast as ast;
use rustc_ast::{ptr::P, tokenstream::TokenStream};
use rustc_errors::Applicability;
use rustc_expand::base::{self, DummyResult};
use rustc_session::errors::report_lit_error;
use rustc_span::Span;
/// Emits errors for literal expressions that are invalid inside and outside of an array.
@ -68,7 +69,10 @@ fn invalid_type_err(
Ok(ast::LitKind::Int(_, _)) => {
cx.span_err(span, "numeric literal is not a `u8`");
}
_ => unreachable!(),
Ok(ast::LitKind::ByteStr(_) | ast::LitKind::Byte(_)) => unreachable!(),
Err(err) => {
report_lit_error(&cx.sess.parse_sess, err, token_lit, span);
}
}
}

8
src/test/ui/macros/issue-104769-concat_bytes-invalid-literal.rs Normal file
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@ -0,0 +1,8 @@
#![feature(concat_bytes)]
fn main() {
concat_bytes!(7Y);
//~^ ERROR invalid suffix `Y` for number literal
concat_bytes!(888888888888888888888888888888888888888);
//~^ ERROR integer literal is too large
}

16
src/test/ui/macros/issue-104769-concat_bytes-invalid-literal.stderr Normal file
View File

@ -0,0 +1,16 @@
error: invalid suffix `Y` for number literal
--> $DIR/issue-104769-concat_bytes-invalid-literal.rs:4:19
|
LL | concat_bytes!(7Y);
| ^^ invalid suffix `Y`
|
= help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
error: integer literal is too large
--> $DIR/issue-104769-concat_bytes-invalid-literal.rs:6:19
|
LL | concat_bytes!(888888888888888888888888888888888888888);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors