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* [Bug c++/96478] New: GCC accepts enum definition in alignas()
@ 2020-08-05  4:41 haoxintu at gmail dot com
  2020-08-05 12:28 ` [Bug c++/96478] " mpolacek at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: haoxintu at gmail dot com @ 2020-08-05  4:41 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96478

            Bug ID: 96478
           Summary: GCC accepts enum definition in alignas()
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: haoxintu at gmail dot com
  Target Milestone: ---

Hi, all.

This code might be a invalid code, but GCC accepts it well. Other mainstream
compilers reject this code.

Code:
namespace {
    template <class> int foo(){return 0;}
    template <>
    alignas (enum e{}) int foo<int>();
}

Output in Clang:
error: '(anonymous namespace)::e' cannot be defined in a type specifier

Output in ICC:
error: type definition is not allowed

Every version from GCC-6.1 onwards behaves the same.

Thanks,
Haoxin

^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug c++/96478] GCC accepts enum definition in alignas()
  2020-08-05  4:41 [Bug c++/96478] New: GCC accepts enum definition in alignas() haoxintu at gmail dot com
@ 2020-08-05 12:28 ` mpolacek at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-08-05 12:28 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96478

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |mpolacek at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=95935
   Last reconfirmed|                            |2020-08-05

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Related to 95935.

^ permalink raw reply	[flat|nested] 2+ messages in thread
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2020-08-05  4:41 [Bug c++/96478] New: GCC accepts enum definition in alignas() haoxintu at gmail dot com
2020-08-05 12:28 ` [Bug c++/96478] " mpolacek at gcc dot gnu.org

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