diff options
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 b56919c53c7..043ce3bf5b0 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -1658,6 +1658,12 @@ 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 |