wa-lang.org/wazero@v1.0.2/internal/integration_test/spectest/v2/testdata/token.wast (about)

     1  ;; Test tokenization
     2  
     3  (assert_malformed
     4    (module quote "(func (drop (i32.const0)))")
     5    "unknown operator"
     6  )
     7  (assert_malformed
     8    (module quote "(func br 0drop)")
     9    "unknown operator"
    10  )