mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove an address comparison from the parser

Browse Source
This commit is contained in:
Maybe Waffle 2022-11-08 11:51:10 +00:00
parent 57d3c58ed6
commit e5d01dcc78
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
compiler/rustc_parse/src/parser/expr.rs
View File

@ -833,16 +833,11 @@ impl<'a> Parser<'a> {
("cast", None)
};
// Save the memory location of expr before parsing any following postfix operators.
// This will be compared with the memory location of the output expression.
// If they different we can assume we parsed another expression because the existing expression is not reallocated.
let addr_before = &*cast_expr as *const _ as usize;
let with_postfix = self.parse_dot_or_call_expr_with_(cast_expr, span)?;
let changed = addr_before != &*with_postfix as *const _ as usize;
// Check if an illegal postfix operator has been added after the cast.
// If the resulting expression is not a cast, or has a different memory location, it is an illegal postfix operator.
if !matches!(with_postfix.kind, ExprKind::Cast(_, _) | ExprKind::Type(_, _)) || changed {
if !matches!(with_postfix.kind, ExprKind::Cast(_, _) | ExprKind::Type(_, _)) {
let msg = format!(
"{cast_kind} cannot be followed by {}",
match with_postfix.kind {