<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/102382>102382</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [llvm-lit] lit internal shell failing to parse and execute curly brace syntax
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          connieyzhu
      </td>
    </tr>
</table>

<pre>
    lit’s internal shell cannot recognize and execute the `{}` syntax, which is used in tests across lld and compiler-rt.

Example error message:

```
FAIL: lld :: ELF/error-handling-script-linux.test (9 of 2939)
******************** TEST 'lld :: ELF/error-handling-script-linux.test' FAILED ********************
Exit Code: 127

Command Output (stdout):
--

# RUN: at line 21
{ echo 'a_: ret'; echo 'bar: movl a(%rip), %eax' ; } | /usr/local/google/home/connieyzhu/llvm-project/build/bin/llvm-mc -filetype=obj -triple=x86_64 - -o /usr/local/google/home/connieyzhu/llvm-project/build/tools/lld/test/ELF/Output/error-handling-script-linux.test.tmp3.o
# executed command: '{' echo 'a_: ret'
# .---command stderr------------
# | '{': command not found
# `-----------------------------
# error: command failed with exit status: 127
```
</pre>
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