This removes volatiles on ARC/ORC targets in NimMain and PreMainInner.
This avoids an issue where they couldn't be optimised out on
microcontrollers leading to larger code. Since the stack bottom doesn't
have to be initialised this way when using ARC or ORC (or None, which is
also covered by this PR) these can be safely removed.

(cherry picked from commit 9a49451)

* Refactor: rename proc to func

* Fix punycode.decode function

This function could only properly decode punycodes containing a single
encoded unicode character. As soon as there was more than one punycode
character group to decode it produced invalid output - the number of
characters was correct, but their position was not.

* Update tpunycode.nim

Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
(cherry picked from commit ade85ee)

* enable style:usages for stdlib tests

* freeAddrInfo

* more tests

* importc

* bufSize

* fix more

* => parseSql and renderSql

(cherry picked from commit 98cebad)

there's currently no (simple) way to disambiguate which option failed

(cherry picked from commit 63cca93)

Co-authored-by: quantimnot <quantimnot@users.noreply.github.com>
(cherry picked from commit a8426fc)

Found another small typo.

(cherry picked from commit 19001c0)

(cherry picked from commit 85bc832)

(cherry picked from commit 2e0db98)

why aren't these not being caught by style check options?
--styleCheck:usages finds it.

Co-authored-by: flywind <xzsflywind@gmail.com>
(cherry picked from commit cb6ce80)

* style usages (openArray)

* revert doc changes

(cherry picked from commit 9df195e)

…ackport]

fix #19862; make widestrs consistent in refc and orc

(cherry picked from commit 1972005)

* Initial implementation of nimsuggest v3 (#19826)

* Initial implementation of nimsuggest v3

Rework `nimsuggest` to use caching to make usage of ide commands more efficient.
Previously, all commands no matter what the state of the process is were causing
clean build. In the context of Language Server Protocol(LSP) and lsp clients
this was causing perf issues and overall instability. Overall, the goal of v3 is
to fit to LSP Server needs

- added two new commands:
  - `recompile` to do clean compilation
  - `changed` which can be used by the IDEs to notify that a particular file has been changed.
The later can be utilized when using LSP file watches.
  - `globalSymbols` - searching global references

- added `segfaults` dependency to allow fallback to clean build when incremental
fails. I wish the error to be propagated to the client so we can work on fixing
the incremental build failures (typically hitting pointer)

- more efficient rebuild flow. ATM incremental rebuild is triggered when the
command needs that(i. e. it is global) while the commands that work on the
current source rebuild only it

Things missing in this PR:

- Documentation
- Extensive unit testing.

Although functional I still see this more as a POC that this approach can work.

Next steps:
- Implement `sug` request.
- Rework/extend the protocol to allow better client/server communication.
Ideally we will need push events, diagnostics should be restructored to allow
per file notifications, etc.
- implement v3 test suite.
- better logging

* Add tests for v3 and implement ideSug

* Remove typeInstCache/procInstCache cleanup

* Add ideChkFile command

* Avoid contains call when adding symbol info

* Remove log

* Remove segfaults

* Fixed bad cherry-pick resolve

* modulegraphs.dependsOn does not work on transitive modules

- make sure transitive deps are marked as dirty

not generate initStackBottomWith in arc/orc

(cherry picked from commit eefca1b)

* Pass headers to FetchOptions

Don't pass body if method is HttpGet or HttpHead

* Syntax fixes

* Restart CI

(cherry picked from commit 8fa2c0b)

… [backport]

fix #19199; properly fold float conversion

(cherry picked from commit ab47707)

* Windows: enable nimRawSetjmp by default

See #19197. The default setjmp can randomly segfault on windows

* Attempt to disable the flag for bootstraping

* Disable styleCheck for c_setjmp

(cherry picked from commit 251bdc1)

(cherry picked from commit 40464fa)

 (#19902) [backport]

* revert #12217 since the root problem seems to have been fixed; fix #15974;fix #12551; fix #19464

* fix #16020; fix #16780

* fix tests and #16613

* fix #14553

* fix #19909; skip skipRegisterAddr

* fix #18641

(cherry picked from commit 3cb2d7a)

…rt] (#19918)

* dec inLoop after exiting the while scope in computeLiveRanges

* add testcase

(cherry picked from commit bcff13d)

* once C++, always C++

When using `{.compile: "file.cc".}` in a nim module, even when compiling
with `nim c` the C++ compiler should be used - once any C++ file has
been compiled, the C++ linker also needs to be used.

* more strict C++ check

* simplify code

(cherry picked from commit ad430c0)

sysrand: fix syscall signature

`syscall` is a `C` varags function

(cherry picked from commit ad0aee5)

* Fix nested finally handling in closureiters

* Fix CI

* review comment

* third time the charm

* Update compiler/closureiters.nim

Co-authored-by: Dominik Picheta <dominikpicheta@googlemail.com>

Co-authored-by: Dominik Picheta <dominikpicheta@googlemail.com>
(cherry picked from commit fb5fbf1)

…literal (#20019) [backport]

fixes streams.readDataStr accept a string literal

(cherry picked from commit 286fcef)

emscripten reports infinity for every getrlimit() requests, which does
not work when requesting the max number of file descriptors (prlimit64
syscall). This patch provides a default of 1024 which is common on Linux.

This is used in particular in ioselectors_poll.nim and te invalid value
makes it crash.

* Implement type command

- this will be mapped to textDocument/typeDefinition in LSP protocol. It will be
very useful for `nim` in particular because typically most of the time the type
is inferred.

* Update nimsuggest/nimsuggest.nim

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
(cherry picked from commit e636c21)

After this you can do goto module from module import

(cherry picked from commit b0b9a3e)

…olders (#19988)

(cherry picked from commit 0180c61)

testament: use full test name in skips
(cherry picked from commit 094d86f)

* Refactor and doc package handling, module name mangling

* Consolidate, de-duplicate and extend package handling
* Alter how duplicate module names of a package are handled
* Alter how module names are mangled
* Fix crash when another package is named 'stdlib' (test case added)
* Doc what defines a package in the manual

Modules with duplicate names within a package used to be given 'fake'
packages to resolve conflicts. That prevented the ability to discern if
a module belonged to the current project package or a foreign package.
They now have the proper package owner and the names are mangled in a
consistent manner to prevent codegen clashes.

All module names are now mangled the same. Stdlib was treated special
before, but now it is same as any other package. This fixes a crash
when a foreign package is named 'stdlib'.

Module mangling is altered for both file paths and symbols used by the
backends.

Removed an unused module name to package mapping that may have been
intended for IC. The mapping was removed because it wasn't being used
and was complicating the issue of package modules with duplicate names
not having the proper package owner assigned.

* Fix some tests

* Refactor `packagehandling`

* Remove `packagehandling.withPackageName` and its uses
* Move module path mangling from `packagehandling` to `modulepaths`
* Move `options.toRodFile` to `ic` to break import cycle

* Changed import style to match preferred style

Co-authored-by: quantimnot <quantimnot@users.noreply.github.com>
(cherry picked from commit d30c641)

(cherry picked from commit c6264ed)

…rashes with minor memory leaks which seems to be acceptable. In the longer run we need a better VM that didn't grow hacks over a decade. (#19515)

Co-authored-by: flywind <xzsflywind@gmail.com>
(cherry picked from commit ed0dce7)

remove unused procs

(cherry picked from commit 2f49006)

correct comment opcDeref => opcLdDeref

(cherry picked from commit a65db5e)

* epoll: correct mapping

`epoll_data` is a union and `epoll_event` is packed on `amd64`

* names

(cherry picked from commit f2e4407)

(cherry picked from commit 685bf94)

(cherry picked from commit 1a9123e)

We were doing a very poor job detecting the major version of GCC by
parsing the output of --version.

This patches uses -dumpversion to make this parsing straightforward and
it also fixes a bunch of compiling issues on different platforms with
custom output for --version switches. For example, openSUSE first line
of the output includes the revision number and the parsing that was
being done did mix that number with the major version and breaks
building the nim compiler (as it doesn't find the 3 dots for an X.Y.Z semver
format, hence returning "false").

In this patch, we simply use -dumpversion (which has been at least from
1993, so we are safe :)

(cherry picked from commit efcb89f)

Revert "Correct emscripten shortcoming (#19987)"

This reverts commit 0e71384.

* fixes #20031; uint64 is an ordinal type since 1.0

* Update compiler/semstmts.nim

(cherry picked from commit 5bbc5ed)

* bump macOS image on Azure CI to macos-11

##[warning]The macOS-10.15 environment is deprecated, consider switching to macos-11(macos-latest), macos-12 instead. For more details see actions/runner-images#5583

* fix CI error

(cherry picked from commit 8ef509b)

* Change `styleCheck` to ignore foreign packages

* Symbols from foreign packages are now ignored.
* Fixed `styleCheck` violations in `compiler` package.
* Added symbol ownership to custom annotation pragmas.
* Minor refactors to cleanup style check callsites.
* Minor internal documentation of reasons why a symbol isn't checked.

Style violations were fixed in the compiler after thet were exposed by
the changes. The compiler wouldn't compile otherwise.

Symbol ownership for custom pragma annotations is needed for checking
the annotation's style. A NPE was raised otherwise.

Fixes #10201
See also nim-lang/RFCs#456

* Fix a misunderstanding about excluding field style checks

I had refactored the callsites of `styleCheckUse` to apply the DRY
principle, but I misunderstood the field access handling in a template
as a general case. This corrects it.

* Fix some `styleCheck` violations in `compiler/evalffi`

The violations were exposed in CI when the compiler was built with
libffi.

* Removed some uneeded transitionary code

* Add changelog entry

Co-authored-by: quantimnot <quantimnot@users.noreply.github.com>
(cherry picked from commit 800cb00)

(cherry picked from commit 0d734d7)

Don't require blank line before Markdown code

Fixes bug reported in #20189
affecting nimforum.
(manually backported version to 1.6 from devel)

* fixes #20132; fixes the broken jsondoc comand

* add testcase

(cherry picked from commit 2aeb0d5)

* fixes #20153; do not escape `_` for mysql

* add a test

* Update db_mysql.nim

* Update tdb_mysql.nim

Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
(cherry picked from commit 3bd935f)

(cherry picked from commit b1fe169)

fixes #20162; locals doesn't work with ORC

(cherry picked from commit 25c6491)

- Fixes #18840

(cherry picked from commit ec2bc2a)