diff options
| -rw-r--r-- | tests/ui/typeck/suggest-arg-comma-delete-ice.rs | 19 | ||||
| -rw-r--r-- | tests/ui/typeck/suggest-arg-comma-delete-ice.stderr | 38 |
2 files changed, 57 insertions, 0 deletions
diff --git a/tests/ui/typeck/suggest-arg-comma-delete-ice.rs b/tests/ui/typeck/suggest-arg-comma-delete-ice.rs new file mode 100644 index 00000000000..48d02e13eca --- /dev/null +++ b/tests/ui/typeck/suggest-arg-comma-delete-ice.rs @@ -0,0 +1,19 @@ +//! Previously, we tried to remove extra arg commas when providing extra arg removal suggestions. +//! One of the edge cases is having to account for an arg that has a closing delimiter `)` +//! following it. However, the previous suggestion code assumed that the delimiter is in fact +//! exactly the 1-byte `)` character. This assumption was proven incorrect, because we recover +//! from Unicode-confusable delimiters in the parser, which means that the ending delimiter could be +//! a multi-byte codepoint that looks *like* a `)`. Subtracing 1 byte could land us in the middle of +//! a codepoint, triggering a codepoint boundary assertion. +//! +//! issue: rust-lang/rust#128717 + +fn main() { + // The following example has been modified from #128717 to remove irrelevant Unicode as they do + // not otherwise partake in the right delimiter calculation causing the codepoint boundary + // assertion. + main(rahh）; + //~^ ERROR unknown start of token + //~| ERROR this function takes 0 arguments but 1 argument was supplied + //~| ERROR cannot find value `rahh` in this scope +} diff --git a/tests/ui/typeck/suggest-arg-comma-delete-ice.stderr b/tests/ui/typeck/suggest-arg-comma-delete-ice.stderr new file mode 100644 index 00000000000..53608391f3c --- /dev/null +++ b/tests/ui/typeck/suggest-arg-comma-delete-ice.stderr @@ -0,0 +1,38 @@ +error: unknown start of token: \u{ff09} + --> $DIR/suggest-arg-comma-delete-ice.rs:15:14 + | +LL | main(rahh）; + | ^^ + | +help: Unicode character '）' (Fullwidth Right Parenthesis) looks like ')' (Right Parenthesis), but it is not + | +LL | main(rahh); + | ~ + +error[E0425]: cannot find value `rahh` in this scope + --> $DIR/suggest-arg-comma-delete-ice.rs:15:10 + | +LL | main(rahh）; + | ^^^^ not found in this scope + +error[E0061]: this function takes 0 arguments but 1 argument was supplied + --> $DIR/suggest-arg-comma-delete-ice.rs:15:5 + | +LL | main(rahh）; + | ^^^^ ---- unexpected argument + | +note: function defined here + --> $DIR/suggest-arg-comma-delete-ice.rs:11:4 + | +LL | fn main() { + | ^^^^ +help: remove the extra argument + | +LL - main(rahh）; +LL + main(）; + | + +error: aborting due to 3 previous errors + +Some errors have detailed explanations: E0061, E0425. +For more information about an error, try `rustc --explain E0061`. |