On Sun, Jan 04, 2026 at 01:24:01PM +0000, Robert Clausecker wrote: > The branch stable/15 has been updated by fuz: > > URL: > https://cgit.FreeBSD.org/src/commit/?id=9c68745a50640ccff37565e3cbfe53dddc18d7d3 > > commit 9c68745a50640ccff37565e3cbfe53dddc18d7d3 > Author: Robert Clausecker <[email protected]> > AuthorDate: 2025-12-18 23:37:33 +0000 > Commit: Robert Clausecker <[email protected]> > CommitDate: 2026-01-04 13:22:51 +0000 > > libc/amd64: fix stpncpy.S again > > The previous fix introduced a regression on machines without the BMI1 > instruction set extension. The TZCNT instruction used in this function > behaves different on old machines when the source operand is zero, but > the code was originally designed to never trigger this case. The bug > fix caused this case to be possible, leading to a regression on > sufficiently old hardware. > > Fix the code by messing with things such that the source operand is > never zero. > > PR: 291720 > Fixes: 66eb78377bf109af1d9e25626bf254b4369436ec > Tested by: cy > Approved by: markj (mentor) > Differential Revision: https://reviews.freebsd.org/D54303 > > (cherry picked from commit 2f83319214d9adb8ab7a77e35d1014658b3f9cae)
Why do you perform insta-MFC? Even for bug fixes, the strict policy is to have at least 3 days probation for the change in HEAD.
