I get an "undefined reference" error with a recent gcc 4.2 when linking to a
class whose header contains an additional namespace that is references from
that class. This is a very recent error. It started to occur between 20060626
and 20060709.
(sid)1690:[EMAIL PROTECTED]: ~/src/t] make
rm -f *.o
g++-4.1 -c t.cc ; g++-4.1 -c a.c ; g++-4.1 a.o t.o
rm -f *.o
g++-4.2 -c t.cc ; g++-4.2 -c a.c ; g++-4.2 a.o t.o
a.o: In function `main':
a.c:(.text+0x18): undefined reference to `test::MonitorHandle::MonitorHandle()'
collect2: ld returned 1 exit status
(sid)1691:[EMAIL PROTECTED]: ~/src/t] cat t.h
namespace test
{
namespace
{
class SignalProxy_Monitor;
}
class MonitorHandle
{
public:
MonitorHandle();
private:
SignalProxy_Monitor* proxy_;
};
}
(sid)1693:[EMAIL PROTECTED]: ~/src/t] cat t.cc
#include "t.h"
namespace test
{
MonitorHandle::MonitorHandle()
{}
}
(sid)1694:[EMAIL PROTECTED]: ~/src/t] cat a.c
#include "t.h"
int main(void) {
test::MonitorHandle handle;
return 0;
}
--
Summary: [4.2 regression] undefined reference when header
contains additional namespace
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tbm at cyrius dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28360
