[Bug target/44107] gcc emits frame (epilogue) info incompatible with the darwin {8,9}-unwinder,10-compacter

["iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44107

--- Comment #30 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Denis Excoffier from comment #29)
> (In reply to Iain Sandoe from comment #28)
> > Well, there is a fix - which is to update
> > /usr/lib/libgcc_s.dylib to a non-buggy version.
> I had understood that it was desirable not to replace libgcc_s.dylib.

so long as the system was maintained by the Vendor, then indeed it would be a
bad thing but… see below

(It's also somewhat like open-heart surgery - if you make a mistake doing the
exchange then you need to boot from a different disk to recover.  This makes it
unsuitable, without an installer, for casual users)

> Personally, i use the sed command (shown in comment #17) to create my own
> libgcc_s.1.dylib, i install it with GCC in /usr/local (or equivalent) and
> try to always link with it (and usually succeed since i don't use any
> libraries that are already linked with /usr/lib/libgcc_s.dylib). For
> security matters, that's like replacing, however.

I think replacing is the proper option in this case - the security issue is
moot for an unsupported EOL system.

> 
> In any case, that bug is not NEW any more.

Well, I think we should close as WONTFIX - because we don't have resources to
find a better solution - and replacing the library is an acceptable work-around
for EOL systems (I've now done this on both my i686 and ppc darwin9 boxes).

Note: that a replacement library MUST be built FAT if you want ppc64 to work
and FAT including ppc on i686-darwin9 if you want rosetta to work.
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Subject: [Bug libstdc++/58764] [4.9 Regression] [lwg/2193] error:=?UTF-8?Q? converting to ‘const std?=::vector<std::basic_string<char> >=?UTF-8?Q?’ from initializer list would use explicit constructor?Date: Wed, 22 Jan 2014 19:53:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX764

--- Comment #10 from Marc Glisse <glisse at gcc dot gnu.org> ---
       vector() _GLIBCXX_NOEXCEPT : _Base() { }
       list() _GLIBCXX_NOEXCEPT

I think that's wrong, the default construction of the allocator may throw,
hence the conditional noexcept I was suggesting in comment #3.