[Bug libstdc++/39491] [4.2/4.3 regression] symbol __signbitl@GLIBCXX_3.4 in libstdc++ exported
------- Comment #28 from carlos at codesourcery dot com 2009-04-28 20:57 -------
Exporting a non-default versioned symbol is useless since new programs won't be
able to link against that definition.
Did 4.2/4.3 export a global default symbol for __signbitl?
If we did export a global default symbol for __signbitl then we must continue
to export it.
The current glibc math.h signbit macro will evaluate to __signbitl if passed a
long dobule type, and therefore correct programs using the signbit macro may
have ended up referencing __signbitl from libstdc++.
Please comment.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39491
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