| // RUN: not mlir-opt -allow-unregistered-dialect %s -split-input-file -verify-diagnostics 2>&1 | FileCheck %s | |
| // CHECK: found start of regex with no end '}}' | |
| // expected-error-re {{{{}} | |
| // ----- | |
| // CHECK: invalid regex: parentheses not balanced | |
| // expected-error-re {{ {{(}} }} | |
| // ----- | |
| func.func @foo() -> i32 { | |
| // expected-error-re@+1 {{'func.return' op has 0 operands, but enclosing function (@{{.*}}) returns 1}} | |
| return | |
| } |