binutils-gold: produces different symbols for webkit

[Jonathan Nieder]

tags 700737 + moreinfo
quit

Hi Michael,

Michael Gilbert wrote:

> - (optional|c++)"WebCore::TextIterator::getLocationAndLengthFromRange(WebCore::Element*, WebCore::Range const*, unsigned int&, unsigned int&)@Base" 1.7.4
> +#MISSING: 1.8.1-3.3# (optional|c++)"WebCore::TextIterator::getLocationAndLengthFromRange(WebCore::Element*, WebCore::Range const*, unsigned int&, unsigned int&)@Base" 1.7.4

>From the dpkg-gensymbols(1) manpage:

	optional
		A symbol marked as optional can disappear from the
		library at any time and that will never cause
		dpkg-gensymbols to fail.

[...]
> @@ -213,6 +213,7 @@
>   _NPN_SetException at Base 1.3.10
>   _NPN_SetProperty at Base 1.3.10
>   _NPN_UTF8FromIdentifier at Base 1.3.10
> + _ZdlPv at Base 1.8.1-3.3

c++filt tells me this is operator delete(void*).

So presumably an entry

	(optional|c++)"operator delete(void*)"

would suppress the build failure.  Can you say a little more about
whether this is a gold bug?  Do binaries built against versions of
libwebkit built with gold rely on this symbol and fail when run
against libwebkit built with ld.bfd?

In C++, different lists of exported symbols based on the phase of moon
are completely normal, for example when template instantiation is
involved.  So more details would be welcome.

Thanks,
Jonathan