labath wrote:
It's close, but it's not the same thing. Notice your arrow points into the
error message:
```
(lldb) v externGlobalVar
error: externGlobalVar
˄
╰─ error: use of undeclared identifier 'externGlobalVar'
```
While for `expr`, it points directly into the command:
```
(lldb) expr 1.0+""
˄
╰─ error: invalid operands to binary expression ('double' and
'const char[1]')
```
For that, you really need to return the error in a structured form. The string
itself is needed as well, as it's used in contexts where it's impossible to
show inline diagnostics, or because they have been disabled:
```
And if I disable inline diagnostics I, get the usual clang output:
```
(lldb) set set show-inline-diagnostics false
(lldb) expr 1.0+""
error: <user expression 1>:1:4: invalid operands to binary expression ('double'
and 'const char[1]')
1 | 1.0+""
| ~~~^~~
```
For this purpose, you could use your original code, or maybe what you have now
is fine as well.
https://github.com/llvm/llvm-project/pull/120971
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