error: macro definition ended unexpectedly
  --> $DIR/bad-macro-definition.rs:3:23
   |
LL | macro_rules! a { {} => }
   |                       ^ expected right-hand side of macro rule

error: invalid macro matcher; matchers must be contained in balanced delimiters
  --> $DIR/bad-macro-definition.rs:6:18
   |
LL | macro_rules! b { 0 => }
   |                  ^

error: macro definition ended unexpectedly
  --> $DIR/bad-macro-definition.rs:6:22
   |
LL | macro_rules! b { 0 => }
   |                      ^ expected right-hand side of macro rule

error: invalid macro matcher; matchers must be contained in balanced delimiters
  --> $DIR/bad-macro-definition.rs:10:18
   |
LL | macro_rules! c { x => }
   |                  ^

error: macro definition ended unexpectedly
  --> $DIR/bad-macro-definition.rs:10:22
   |
LL | macro_rules! c { x => }
   |                      ^ expected right-hand side of macro rule

error: invalid macro matcher; matchers must be contained in balanced delimiters
  --> $DIR/bad-macro-definition.rs:14:18
   |
LL | macro_rules! d { _ => }
   |                  ^

error: macro definition ended unexpectedly
  --> $DIR/bad-macro-definition.rs:14:22
   |
LL | macro_rules! d { _ => }
   |                      ^ expected right-hand side of macro rule

error: expected `=>`, found end of macro arguments
  --> $DIR/bad-macro-definition.rs:18:20
   |
LL | macro_rules! e { {} }
   |                    ^ expected `=>`

error: macros must contain at least one rule
  --> $DIR/bad-macro-definition.rs:21:1
   |
LL | macro_rules! f {}
   | ^^^^^^^^^^^^^^^^^

error: `unsafe` is only supported on `attr` rules
  --> $DIR/bad-macro-definition.rs:24:18
   |
LL | macro_rules! g { unsafe {} => {} }
   |                  ^^^^^^

error: aborting due to 10 previous errors