Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Tue, 26 Jul 2011 16:28:24 -0600

> > error: generic thunk code
> > fails for method 'virtual int
> > udpiiu::printFormated(epicsGuard<epicsMutex>&, const char*, ...)' which
> > uses '...'

Committed a workaround (avoiding MI) to the R3.14 branch. Hopefully this is
a sufficient fix as I cant reproduce the issue here.

https://bugs.launchpad.net/epics-base/+bug/816678

Jeff
______________________________________________________
Jeffrey O. Hill           Email        [email protected]
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Message content: TSPA

With sufficient thrust, pigs fly just fine. However, this is
not necessarily a good idea. It is hard to be sure where they
are going to land, and it could be dangerous sitting under them
as they fly overhead. -- RFC 1925

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Andrew Johnson
> Sent: Tuesday, July 26, 2011 3:40 PM
> To: [email protected]
> Cc: Eric Norum
> Subject: Re: EPICS on OS X Lion -- C++ problem
> 
> Hi Eric,
> 
> On Monday, July 25, 2011 12:54:28 Eric Norum wrote:
> > Downloaded and installed OS X Lion and the latest version of Xcode on my
> > laptop machine.  Attempting to build EPICS results in:
> > /usr/bin/c++ -c -DUNIX  -Ddarwin     -O3 -g   -Wall      -arch i386
> > -fno-common -fPIC -MMD -I. -I../O.Common -I. -I..
> > -I../../../include/os/Darwin -I../../../include       -
> I/opt/local/include
> > -I/sw/include  ../udpiiu.cpp ../udpiiu.cpp:1391: error: generic thunk
> code
> > fails for method 'virtual int
> > udpiiu::printFormated(epicsGuard<epicsMutex>&, const char*, ...)' which
> > uses '...'
> 
> We've seen this twice now at APS with GCC 4.1.2 built for both the Xilinx
> and
> Altera FPGA-based CPUs.  I managed to narrow the code down to to one
> simple
> file, attached here, which contains valid C++ code but is using some
> rather
> unusual combination of operations (mixing the use of ... with double
> inheritance) that requires some thunking code that is often not developed
> for
> new CPUs.  It's basically that whoever wrote the CPU support didn't finish
> the
> job, and EPICS is the first code to notice.
> 
> - Andrew (from England, on holiday)

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System