Linaro GCC

Widening multiply-accumulate operation uses wrong value extension

Bug #1174496 reported by Jonas Gorski
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linaro GCC
Won't Fix
Undecided
Unassigned

Bug Description

This is upstream bug 54295, which due to backports by linaro also affects linaro 4.6 up to 2013.04, and of course linaro 4.7 up to 2013.04. linaro 4.5 is not affected.

This results in kernel code miscompilation.

References:

Upstream report: <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54295>. The mentioned commits apply (more or less) cleanly to linaro 4.6 and linaro 4.7.

Smallish testcase for MIPS32: <https://lists.openwrt.org/pipermail/openwrt-devel/2013-April/019862.html>

Christophe Lyon (christophe-lyon)
Changed in gcc-linaro:
status: New → Won't Fix
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.