src/test/ui/macros/cfg.stderr

   1 error: macro requires a cfg-pattern as an argument
   2   --> $DIR/cfg.rs:2:5
   3    |
   4 LL |     cfg!();
   5    |     ^^^^^^ cfg-pattern required
   6    |
   7    = note: this error originates in the macro `cfg` (in Nightly builds, run with -Z macro-backtrace for more info)
   8
   9 error: expected identifier, found `123`
  10   --> $DIR/cfg.rs:3:10
  11    |
  12 LL |     cfg!(123);
  13    |          ^^^ expected identifier
  14
  15 error[E0565]: literal in `cfg` predicate value must be a string
  16   --> $DIR/cfg.rs:4:16
  17    |
  18 LL |     cfg!(foo = 123);
  19    |                ^^^
  20
  21 error: expected 1 cfg-pattern
  22   --> $DIR/cfg.rs:5:5
  23    |
  24 LL |     cfg!(foo, bar);
  25    |     ^^^^^^^^^^^^^^
  26    |
  27    = note: this error originates in the macro `cfg` (in Nightly builds, run with -Z macro-backtrace for more info)
  28
  29 error: aborting due to 4 previous errors
  30
  31 For more information about this error, try `rustc --explain E0565`.