[Bug c++/42277] New: decltype error in template

[Bug c++/42277] New: decltype error in template

[jakub at gcc dot gnu dot org]

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// { dg-options "-std=c++0x" }
struct S { int s; };
template <int N>
void foo ()
{
  S s;
  decltype (s.s) i;
}
diagnoses:
t.C: In function ‘void foo()’:
t.C:6: error: type of ‘s.s’ is unknown
t.C:6: error: invalid type in declaration before ‘;’ token

(but compiles just fine when template <int N> line is commented out).
Both 4.4 and trunk diagnose this.


-- 
           Summary: decltype error in template
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42277

[Bug c++/42277] decltype error in template

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-12-04 20:47:08
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42277

[Bug c++/42277] decltype error in template

[jason at gcc dot gnu dot org]

------- Comment #1 from jason at gcc dot gnu dot org  2009-12-04 22:51 -------
Subject: Bug 42277

Author: jason
Date: Fri Dec  4 22:51:12 2009
New Revision: 155002

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155002
Log:
        PR c++/42277
        * semantics.c (finish_decltype_type): Don't assume that op1 of a
        COMPONENT_REF is always the field.
        * g++.dg/cpp0x/decltype20.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/decltype20.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42277

[Bug c++/42277] decltype error in template

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2010-01-20 22:12 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42277