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* [Bug c++/109222] New: Confusing error for declaring an enum class with unknown type
@ 2023-03-21 1:48 barry.revzin at gmail dot com
2023-03-21 2:07 ` [Bug c++/109222] " pinskia at gcc dot gnu.org
2023-03-21 2:10 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: barry.revzin at gmail dot com @ 2023-03-21 1:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109222
Bug ID: 109222
Summary: Confusing error for declaring an enum class with
unknown type
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: barry.revzin at gmail dot com
Target Milestone: ---
This program fails to compile (as it should, since the first line is commented
out):
// using i32 = int;
enum class E : i32 { red, green, blue };
But the error is...
<source>:2:6: warning: elaborated-type-specifier for a scoped enum must not use
the 'class' keyword
2 | enum class E : i32 { red, green, blue };
| ~~~~ ^~~~~
| -----
<source>:2:14: error: found ':' in nested-name-specifier, expected '::'
2 | enum class E : i32 { red, green, blue };
| ^
| ::
<source>:2:12: error: 'E' has not been declared
2 | enum class E : i32 { red, green, blue };
| ^
<source>:2:20: error: expected unqualified-id before '{' token
2 | enum class E : i32 { red, green, blue };
| ^
In this case I was missing an include for the typedef, but boy did that take me
a while to figure out.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/109222] Confusing error for declaring an enum class with unknown type
2023-03-21 1:48 [Bug c++/109222] New: Confusing error for declaring an enum class with unknown type barry.revzin at gmail dot com
@ 2023-03-21 2:07 ` pinskia at gcc dot gnu.org
2023-03-21 2:10 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-21 2:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109222
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2023-03-21
Keywords| |diagnostic
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
clang does a decent job here:
<source>:1:16: error: unknown type name 'i32'
enum class E : i32 { red, green, blue };
^
Though clang error messages for:
```
struct E
{
enum i32 : int;
};
enum E : i32 { red, green, blue };
```
Seems off ...
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/109222] Confusing error for declaring an enum class with unknown type
2023-03-21 1:48 [Bug c++/109222] New: Confusing error for declaring an enum class with unknown type barry.revzin at gmail dot com
2023-03-21 2:07 ` [Bug c++/109222] " pinskia at gcc dot gnu.org
@ 2023-03-21 2:10 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-21 2:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109222
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|NEW |RESOLVED
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Duplicate of bug 64758 in the end.
*** This bug has been marked as a duplicate of bug 64758 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-03-21 2:10 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2023-03-21 1:48 [Bug c++/109222] New: Confusing error for declaring an enum class with unknown type barry.revzin at gmail dot com
2023-03-21 2:07 ` [Bug c++/109222] " pinskia at gcc dot gnu.org
2023-03-21 2:10 ` pinskia at gcc dot gnu.org
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