[Bug libstdc++/39491] [4.4/4.5 regression] symbol __signbitl@GLIBCXX_3.4 in libstdc++ not exported anymore
------- Comment #13 from jakub at gcc dot gnu dot org 2009-04-22 09:12 -------
If hppa-linux has long double the same as double (which raises the question why
it hasn't switched over to 128-bit long double together with
powerpc*/sparc*/s390*/alpha back in 2006), then __NO_LONG_DOUBLE_MATH should be
defined and therefore no code will ever reference __signbitl from signbit macro
(and __signbitl isn't a supported API, so nothing should really care).
If we really want to change libstdc++ (which I'm not sure about, can you find a
single shared library or binary that references __signbitl from libstdc++.so?),
then the patch should actually handle __signbitl by calling __signbit and also
should be through .symver directive turned into @ symbol instead of @@ to make
sure nothing newly linked can reference it from libstdc++.so.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39491
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