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qmuntal 7c89ad6a80 os: support relative paths in fixLongPath
(This CL takes the tests and some ideas from the abandoned CL 263538).

fixLongPath is used on Windows to process all path names
before syscalls to switch them to extended-length format
(with prefix \\?\) to workaround a historical limit
of 260-ish characters.

This CL updates fixLongPath to convert relative paths to absolute
paths if the working directory plus the relative path exceeds
MAX_PATH. This is necessary because the Windows API does not
support extended-length paths for relative paths.

This CL also adds support for fixing device paths (\\.\-prefixed),
which were not previously normalized.

Fixes #41734
Fixes #21782
Fixes #36375

Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest,gotip-windows-amd64-race,gotip-windows-arm64
Co-authored-by: Giovanni Bajo <rasky@develer.com>
Change-Id: I63cfb79f3ae6b9d42e07deac435b730d97a6f492
Reviewed-on: https://go-review.googlesource.com/c/go/+/574695
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2024-04-01 14:34:38 +00:00
.github github: switch seen/expected order in issue forms 2024-01-04 23:31:17 +00:00
api Revert "testing: add TB.SetGOMAXPROCS function" 2024-03-22 13:07:36 +00:00
doc Revert "testing: add TB.SetGOMAXPROCS function" 2024-03-22 13:07:36 +00:00
lib/time lib/time: use consistent directory in mkzip usage message 2024-03-04 17:32:07 +00:00
misc misc/wasm: support new wasmtime CLI 2023-11-19 21:11:54 +00:00
src os: support relative paths in fixLongPath 2024-04-01 14:34:38 +00:00
test Revert "cmd/compile/internal: merge stack slots for selected local auto vars" 2024-03-30 00:11:00 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/platform,cmd/dist: export the list of supported platforms 2023-06-22 19:44:52 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

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