https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127231
Bug ID: 127231
Summary: `<type error>` is printed out when delete of an
unknown identifier
Product: gcc
Version: 17.0
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:
```
void f()
{
t = new int;
delete t;
}
```
Currently c++ front-end errors out with:
```
<source>: In function 'void f()':
<source>:3:5: error: 't' was not declared in this scope
3 | t = new int;
| ^
<source>:4:5: error: type '<type error>' argument given to 'delete', expected
pointer
4 | delete t;
| ^~~~~~~~
```
It seems like if the type was error_mark_node, the C++ front-end could print
out a different error message about identifier not be declared. Since most
likely the intent was a pointer type.
For comparison, clang errors out this way:
```
<source>:3:5: error: use of undeclared identifier 't'
3 | t = new int;
| ^
<source>:4:12: error: use of undeclared identifier 't'
4 | delete t;
| ^
```
edg only prints out an error about the first line.
MSVC prints out an error message similar to GCC:
```
<source>(3): error C2065: 't': undeclared identifier
<source>(4): error C2065: 't': undeclared identifier
<source>(4): error C2541: 'delete': cannot delete objects that are not pointers
```
