Re: [boost] old_numeric_cast and Borland 5.6.4

From: Alisdair Meredith (alisdair.meredith_at_[hidden])
Date: 2005-06-28 03:51:40

Tobias Schwinger wrote:

> Careful, here -- they did! Well, that is one with a higher version
> number ;-)

> Latest official BCC shipped with BuilderX:
> 
>     BORLANDC == 0x565

Thanks, had not realised they increased the version number of the
compiler, I was only aware of linker fixes.

> Latest Builder6 upgrade pack:
> 
>     BORLANDC == 0x564

OK, now we're in agreement <g>

> Kylix (didn't verify it myself - source: Boost.Config):
> 
>     BORLANDC == 0x570

Oops, keep forgetting about that one!

Trouble is, no-one appears to be testing with it, or at least, it does
not show on the Boost regression test lists.

I would be very reluctant to use BOOST_TESTED_AT with a higher version
than was actually tested!!!

IIUC, the workaround is still applied when using BOOST_TESTED_AT,
regardless of compiler version.  However, if you #define
BOOST_DETECT_OUTDATED_WORKAROUNDS you will get a warning for every
BOOST_TESTED_AT which gives a lower version, so that you can turn it
into a more definite <= test one the bug is fixed, or raise the version
number to recognise the latest testing.

> It seems all are pretty close in terms of portability (for the former
> two I know it and for Kylix it's another guess reading Boost.Config),
> so testing for below 0x600 is what you want, I guess (and above
> 0x551, reading the follow-up).

0x600 seems to be Borland's version series for the EDG-front end they
were experimenting with.  As I understand, those experiments are on
hold now, so we may see future compilers with versions > 0x565 and <
0x600.

Remember the EDG front end was only ever a preview, not a supported,
released product.  It does make life tough library writers though!

AlisdairM