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* c++/9050: Can't explicitly instantiate C++ constructor templates
@ 2002-12-23 19:06 martin
0 siblings, 0 replies; 2+ messages in thread
From: martin @ 2002-12-23 19:06 UTC (permalink / raw)
To: gcc-gnats
>Number: 9050
>Category: c++
>Synopsis: Can't explicitly instantiate C++ constructor templates
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: rejects-legal
>Submitter-Id: net
>Arrival-Date: Mon Dec 23 19:06:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Martin Buchholz
>Release: g++ 3.2.1
>Organization:
>Environment:
Linux x86
>Description:
C++ function templates can be explicitly instantiated.
Constructors can be function templates.
So the following should compile
(and indeed does with icc and Comeau C++)
struct Y
{
template <typename T> Y (T);
template <typename T> void foo (T);
};
template <> void Y::foo (bool) { }
template <> void Y::foo<int> (int) { }
template <> Y::Y (bool) { }
template <> Y::Y<int> (int) { }
Explicit instantiation of Y::foo,
but not Y::Y, is permitted.
g++ gives these errors:
(not only is g++ wrong to give an error,
but the error message below contains the nonsensical
"no member function `._0' declared")
constructor-explicit-instantiation-bug.cc:11: `Y' is not a template
constructor-explicit-instantiation-bug.cc:11: ISO C++ forbids declaration of `
type name' with no type
constructor-explicit-instantiation-bug.cc:11: abstract declarator `int
(Y::)(int)' used as declaration
constructor-explicit-instantiation-bug.cc:11: no member function `._0' declared
in `Y'
constructor-explicit-instantiation-bug.cc:11: syntax error before `{' token
>How-To-Repeat:
Compile the provided fragment with "g++ -c"
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: c++/9050: Can't explicitly instantiate C++ constructor templates
@ 2002-12-25 0:00 lerdsuwa
0 siblings, 0 replies; 2+ messages in thread
From: lerdsuwa @ 2002-12-25 0:00 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, martin, nobody
Synopsis: Can't explicitly instantiate C++ constructor templates
State-Changed-From-To: open->analyzed
State-Changed-By: lerdsuwa
State-Changed-When: Wed Dec 25 00:00:37 2002
State-Changed-Why:
Confirmed.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9050
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-12-23 19:06 c++/9050: Can't explicitly instantiate C++ constructor templates martin
2002-12-25 0:00 lerdsuwa
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