diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_parse/src/parser/expr.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 98b41013a2c..bb0873a814d 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -3182,6 +3182,17 @@ impl<'a> Parser<'a> { })?; let require_comma = match expr.kind { + // Special case: braced macro calls require comma in a match + // arm, even though they do not require semicolon in a + // statement. + // + // m! {} // okay without semicolon + // + // match ... { + // _ => m! {}, // requires comma + // _ => ... + // } + // ExprKind::MacCall(_) => true, _ => classify::expr_requires_semi_to_be_stmt(&expr), } && this.token != token::CloseDelim(Delimiter::Brace); |