Re: Available for testing: gcc-3.3.1-1 and gcc-mingw-20030911-1

[Charles Wilson <cygwin at cwilson dot fastmail dot fm>]

Danny Smith wrote:

> gcc 3.2-3 used Dwarf2 exceptions, which worked most of the time. (In fact,
> I don't recall any bug reports at all on cygwin list).  But it didn't work
> with w32api callbacks, nor with some combinations of compiler switches
> (notably -mcpu=i586 or -mno-accumulate-outgoing-args and
> -fomit-frame-pointer).
>
> cygwin gcc-3.3.1 uses setjmp-longjmp exception mechanism,
> mingw does too and has done since gcc-3.2.1.
>
> The two undefined references are Dwarf2 specific.  The corresponding
> SjLj symbols are __gxx_personality_sj0 and  __Unwind_SjLj_Resume.

So, just to make sure I understand...

This "problem" only affects C++ code -- and only C++ code which uses 
exceptions.  If a C++ library uses exceptions, it should be recompiled 
with the new compiler.  If a C++ _program_ uses excetions -- or uses a 
(C++) library which uses exceptions -- then it should be 
recompiled/relinked too, but only after the suspect lib has been 
recompiled with gcc-3.3.1, as well.

But C code (libraries, apps, etc) are unaffected, and need no recompiling.

Right?

--
Chuck




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