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[Bug libstdc++/51181] [4.7 regression] libstdc++.so __sync_sub_and_fetch_4 linkage error causing many test suite failures on m68k-linux
- From: "joseph at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 17 Nov 2011 21:06:54 +0000
- Subject: [Bug libstdc++/51181] [4.7 regression] libstdc++.so __sync_sub_and_fetch_4 linkage error causing many test suite failures on m68k-linux
- Auto-submitted: auto-generated
- References: <bug-51181-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51181
--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-11-17 21:06:54 UTC ---
FWIW, classic m68k has compare-and-swap, while ColdFire Linux uses kernel
helpers (available in both vDSO and syscall forms; the syscall forms are
probably rather easier to use from libgcc than the vDSO is).