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* [Bug c++/30754] New: mystefying error "type A is not derived from type B"
@ 2007-02-10 3:06 benoit dot hudson at gmail dot com
2007-02-10 9:17 ` [Bug c++/30754] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: benoit dot hudson at gmail dot com @ 2007-02-10 3:06 UTC (permalink / raw)
To: gcc-bugs
#include <vector>
template <class C>
class Cow {
typedef std::vector<C> vect;
typedef vect::iterator it;
};
On line 5, the iterator typedef, I get the very odd error that (reconstituting
the types) vect::iterator is not derived from type Cow<C>.
It took me rather a long time to figure out that what it meant is that I needed
to write:
typedef typename vect::iterator it;
How in the world did this get turned into an error about how "type A is not
derived from type B" ?
This is gcc-3.4, 4.0, and 4.1 ; 3.2 and 3.3 warn me it's implicitely a
typename.
--
Summary: mystefying error "type A is not derived from type B"
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: benoit dot hudson at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30754
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/30754] mystefying error "type A is not derived from type B"
2007-02-10 3:06 [Bug c++/30754] New: mystefying error "type A is not derived from type B" benoit dot hudson at gmail dot com
@ 2007-02-10 9:17 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-02-10 9:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2007-02-10 09:17 -------
*** This bug has been marked as a duplicate of 15179 ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30754
^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-02-10 3:06 [Bug c++/30754] New: mystefying error "type A is not derived from type B" benoit dot hudson at gmail dot com
2007-02-10 9:17 ` [Bug c++/30754] " pinskia at gcc dot gnu dot org
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