<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - lldb-mi Regression with LLDB_DISABLE_PYTHON=1"
   href="https://llvm.org/bugs/show_bug.cgi?id=28253">28253</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>lldb-mi Regression with LLDB_DISABLE_PYTHON=1
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lldb
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.8
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>lldb-dev@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>pierson.lee@microsoft.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When running self-built lldb-mi(3.8.1) with LLDB_DISABLE_PYTHON=1, on execution
time, I'm getting: 

MI: Error: Driver. LLDB Debugger.
MI: Error: Driver Manager. Driver 'Machine Interface Driver Version: 1.0.0.9'
(ID:'MIDriver') initialise failed. Driver. LLDB Debugger.


Ilia K helped me determine that it is due to r251082 change.

The suggested workaround is: 

1. ignore MI_add_summary's errors by returning TRUE:
```
Index: tools/lldb-mi/MICmnLLDBDebugger.cpp
===================================================================
--- tools/lldb-mi/MICmnLLDBDebugger.cpp    (revision 273137)
+++ tools/lldb-mi/MICmnLLDBDebugger.cpp    (working copy)
@@ -58,7 +58,7 @@
                uint32_t options, bool regex = false)
 {
 #if defined(LLDB_DISABLE_PYTHON)
-    return false;
+    return true;
 #else
     lldb::SBTypeSummary summary = lldb::SBTypeSummary::CreateWithCallback(cb,
options);
     return summary.IsValid() ?
category.AddTypeSummary(lldb::SBTypeNameSpecifier(typeName, regex), summary) :
false;
```

In this case, wide chars will not be expanded unlike simple chars:
```
(gdb) -var-create - * cp
^done,name="var7",numchild="1",value="0x0000000000400cb4
\"\\t\\\"hello\\\"\\n\"",type="const char *",thread-id="1",has_more="0"
(gdb) -var-create - * u16p
^done,name="var9",numchild="1",value="0x0000000000400d64",type="const char16_t
*",thread-id="1",has_more="0"
```

2. or you can try to revert r251082


I did #1 but would probably like wide chars to be expanded (which it does not
with the workaround).</pre>
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