#20231: Blacklist GCC 4.8.x
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Reporter: jdemeyer | Owner:
Type: enhancement | Status: closed
Priority: major | Milestone: sage-7.2
Component: build: configure | Resolution: fixed
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers: Frédéric
Report Upstream: N/A | Chapoton
Branch: | Work issues:
37defe3940307cd63a41d3d993715bba0c529c18 | Commit:
Dependencies: | Stopgaps:
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Old description:
> While working on #20226, I got hit by a similar problem as #14460. Since
> that bug is supposed to be fixed upstream in GCC 4.9.0, I think the time
> has come to blacklist all GCC versions older than 4.9.
New description:
While working on #20226, I got hit by a similar problem as #14460, namely
[https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56982]
Since this bug is supposed to be fixed upstream in GCC 4.9.0, I think the
time has come to blacklist all GCC versions older than 4.9.
--
Comment (by jdemeyer):
Replying to [comment:6 embray]:
> Was this announced in sage-devel?
No.
> It seems extreme to me to blacklist an entire compiler when there's a
simple workaround (`-fno-tree-dominator-opts`) that can be applied only
for that version.
There is no simple workaround. The `-fno-tree-dominator-opts` workaround
happens to fix one particular instance of the problem, not the problem in
general. In particular, `-fno-tree-dominator-opts` does not fix the
similar issue from #20226. I was too lazy to investigate yet another
workaround for #20226.
--
Ticket URL: <http://trac.sagemath.org/ticket/20231#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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