https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105869
Bug ID: 105869
Summary: Use of this inside a lambda not inside a non-static
method gives an interesting message
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Take:
```
auto t = []() { this; };
```
Currently GCC gives:
```
<source>:1:17: error: 'this' was not captured for this lambda function
1 | auto t = []() { this; };
| ^~~~
```
Except there is no this to capture and if you try to capture it, GCC gives:
```
<source>:1:11: error: invalid use of 'this' at top level
1 | auto t = [this]() { this; };
| ^~~~
<source>: In lambda function:
<source>:1:21: error: 'this' was not captured for this lambda function
1 | auto t = [this]() { this; };
| ^~~~
```
Clang gives a clearer error message:
```
<source>:1:17: error: invalid use of 'this' outside of a non-static member
function
auto t = []() { this; };
^
```
