Boost C++ Libraries: Ticket #2104: Use of not implemented code/syntax affecting some compilers

Marshall Clow — Sat, 12 Jul 2008 17:35:35 GMT

What system and compiler are you using?

orangevixen@… — Mon, 14 Jul 2008 07:41:01 GMT

Replying to marshall:

What system and compiler are you using?

Linux

egcs-2.91.66

Do you want me to run the build again on that system and output to a file and attach?

Marshall Clow — Mon, 14 Jul 2008 13:23:48 GMT

That's a very old compiler - I suspect that the problems that you are seeing are C++ constructs that it does not support (namespaces, for example).

orangevixen@… — Tue, 15 Jul 2008 04:44:45 GMT

I attached the output of the last build on that system.

Some of the problems seem to be optimizations that mess up the compiler (internal compiler errors). Those occure on gcc 3.0 as well as gcc 2.95, but they occure irregularly, meaning if I build it one time it may not error but if I run make again it errors. Which suggests its triggering a pointer-value dependent bug that's sometimes accessing memory outside of gcc's space and sometimes not.

The namespace problem occures for example:

In boost/regex/v4/basic_regex.hpp:215

explicit basic_regex(const charT* p, flag_type f = regex_constants::normal)

Produces the error:

boost/regex/v4/basic_regex.hpp:215: sorry, not implemented: `namespace_decl' not supported by dump_type

To fix it:

explicit basic_regex(const charT* p, flag_type f = normal)

This gets rid of the namespace problem.

attachment set

orangevixen@… — Tue, 15 Jul 2008 04:46:54 GMT

attachment → output.txt

stdout of last build using egcs

milestone deleted

Mon, 03 Nov 2008 14:20:34 GMT

milestone Boost 1.35.1

Milestone Boost 1.35.1 deleted

status changed; resolution set

Vladimir Prus — Sun, 07 Dec 2008 08:16:41 GMT

status new → closed
resolution → wontfix

I don't think there's any chance a egcs bug will be worked around.