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| author | Patrick Walton <pcwalton@mimiga.net> | 2014-06-20 10:49:54 -0700 |
|---|---|---|
| committer | Patrick Walton <pcwalton@mimiga.net> | 2014-06-20 15:46:58 -0700 |
| commit | ae067477fbc08e5998756d36b6ab0b82173e5c74 (patch) | |
| tree | 371d0ec94c45be7be04db1ad534df4c4093a8676 /src/libsyntax/parse | |
| parent | 6750eb5a05042fe3fb84708909074f33ad86d3ec (diff) | |
| download | rust-ae067477fbc08e5998756d36b6ab0b82173e5c74.tar.gz rust-ae067477fbc08e5998756d36b6ab0b82173e5c74.zip | |
libsyntax: Stop parsing `+` with no bounds after it.
This will break code that looks like `Box<Trait+>`. Change that code to `Box<Trait>` instead. Closes #14925. [breaking-change]
Diffstat (limited to 'src/libsyntax/parse')
| -rw-r--r-- | src/libsyntax/parse/parser.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index ae2ec216bee..158a8c5a116 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -1646,6 +1646,12 @@ impl<'a> Parser<'a> { let bounds = { if self.eat(&token::BINOP(token::PLUS)) { let (_, bounds) = self.parse_ty_param_bounds(false); + if bounds.len() == 0 { + let last_span = self.last_span; + self.span_err(last_span, + "at least one type parameter bound \ + must be specified after the `+`"); + } Some(bounds) } else { None |