commit 9b955d2d3fcff6a5bc8bce7bafdc4c634a28e95b [browse]
Author: Carlos Amedee
Date: 2020-12-03 11:05:59 -05:00

[release-branch.go1.15] go1.15.6

Change-Id: I9e050e1463f1bc01c04d1817aef2f81a5aac4d42
Reviewed-on: https://go-review.googlesource.com/c/go/+/275132
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Carlos Amedee <carlos@golang.org>

commit 480da601431545e3415e25515ac342c583935599 [browse]
Author: Cherry Zhang
Date: 2020-11-17 19:10:51 -05:00

[release-branch.go1.15] cmd/link: recompute heapPos after copyHeap

Immediately after a forward Seek, the offset we're writing to is
beyond len(buf)+len(heap):

|<--- buf --->|<--- heap --->|
                                    ^
                                    off

If we do a copyHeap at this point, the new heapPos should not be
0:

|<---------- buf ----------->|<-heap->|
                                    ^
                                    off

Recompute it.

Updates #42082
Fixes #42948

Change-Id: Icb3e4e1c7bf7d1fd3d76a2e0d7dfcb319c661534
Reviewed-on: https://go-review.googlesource.com/c/go/+/270942
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Trust: Cherry Zhang <cherryyz@google.com>

commit a2adbc876e9362f064afffcb51ce677e2f988c5e [browse]
Author: Keith Randall
Date: 2020-11-20 13:53:05 -08:00

[release-branch.go1.15] cmd/compile: sign extend consant folding properly

MOVLconst must have a properly sign-extended auxint constant.
The bit operations in these rules don't enforce that invariant.

The easiest fix is just to turn on properly typed auxint fields
(which is what fixed this issue at tip).

Fixes #42753

Change-Id: I264245fad45067a6ade65326f7fe681feb5f3739
Reviewed-on: https://go-review.googlesource.com/c/go/+/272028
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>

commit 16ddb8bc763c33fb172d0c1bcd04d070f36f9cc8 [browse]
Author: Alessandro Arzilli
Date: 2020-11-12 14:58:46 +01:00

[release-branch.go1.15] cmd/compile: do not emit an extra debug_line entry for the end of seq addr

Uses DW_LNS_advance_pc directly, instead of calling putpclcdelta
because the latter will create a new debug_line entry for the end of
sequence address.

Updates #42484.
Fixes #42521.

Change-Id: Ib6355605cac101b9bf37a3b4961ab0cee678a839
Reviewed-on: https://go-review.googlesource.com/c/go/+/268937
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/269517

commit 20f50bba49e6338793a5711dc1c6ed60e4b10df8 [browse]
Author: Tobias Klauser
Date: 2020-11-09 11:25:38 +01:00

[release-branch.go1.15] internal/poll: use copy_file_range only on Linux kernel >= 5.3

https://man7.org/linux/man-pages/man2/copy_file_range.2.html#VERSIONS states:

  A major rework of the kernel implementation occurred in 5.3.  Areas
  of the API that weren't clearly defined were clarified and the API
  bounds are much more strictly checked than on earlier kernels.
  Applications should target the behaviour and requirements of 5.3
  kernels.

Rather than attempting to detect the file system for source and
destination files (which means two additional statfs syscalls) and skip
copy_file_range in case of known defects (e.g. CIFS -> CIFS), just
assume copy_file_range to be broken on kernels < 5.3.

Fixes #42550

Change-Id: I3a531296182c1d6e341772cc9d2be5bf83e52575
Reviewed-on: https://go-review.googlesource.com/c/go/+/268338
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
(cherry picked from commit 1c7650aa93bd53b7df0bbb34693fc5a16d9f67af)
Reviewed-on: https://go-review.googlesource.com/c/go/+/269759
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>