diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/rust/parse/rust-parse-impl.h | 6 | ||||
| -rw-r--r-- | gcc/testsuite/rust/compile/issue-867.rs | 8 |
2 files changed, 14 insertions, 0 deletions
diff --git a/gcc/rust/parse/rust-parse-impl.h b/gcc/rust/parse/rust-parse-impl.h index d71bafd..af749ca 100644 --- a/gcc/rust/parse/rust-parse-impl.h +++ b/gcc/rust/parse/rust-parse-impl.h @@ -13021,6 +13021,12 @@ Parser<ManagedTokenSource>::null_denotation (const_TokenPtr tok, case UNSAFE: return parse_unsafe_block_expr (std::move (outer_attrs), tok->get_locus ()); + case UNDERSCORE: + add_error ( + Error (tok->get_locus (), + "use of %qs is not allowed on the right-side of an assignment", + tok->get_token_description ())); + return nullptr; default: if (!restrictions.expr_can_be_null) add_error (Error (tok->get_locus (), diff --git a/gcc/testsuite/rust/compile/issue-867.rs b/gcc/testsuite/rust/compile/issue-867.rs new file mode 100644 index 0000000..8e12068 --- /dev/null +++ b/gcc/testsuite/rust/compile/issue-867.rs @@ -0,0 +1,8 @@ +fn main() { + let _ = 42; + let a = _ + 123; // { dg-error "use of '_' is not allowed on the right-side of an assignment" } + // { dg-error {failed to parse expression in let statement} "" { target *-*-* } .-1 } + // { dg-error {failed to parse statement or expression without block in block expression} "" { target *-*-* } .-2 } + // { dg-error {unrecognised token '\}' for start of item} "" { target *-*-* } .+2 } + // { dg-error {failed to parse item in crate} "" { target *-*-* } .+1 } +} |