fixes#23690
```nim
dest.`:state` = src.`:state`
var :tmp_553651276 = dest.e1.a
`=wasMoved`(dest.e1.a)
dest.e1.a.kind = src.e1.a.kind
case dest.e1.a.kind
of 0:
dest.e1.a.a = src.e1.a.a
of 1:
`=copy`(dest.e1.a.c, src.e1.a.c)
case :tmp_553651276.kind
of 0:
of 1:
`=destroy`(:tmp_553651276.c)
```
`dest.e1.a.kind = src.e1.a.kind` changes the discrimant but it fails to
clear the memory of `dest.e1.a`. Before using hooks for copying, we need
to clear the dest, e.g. `=wasMoved(dest.e1.a.c)`.
```nim
dest.`:state` = src.`:state`
var :tmp_553651276 = dest.e1.a
`=wasMoved`(dest.e1.a)
dest.e1.a.kind = src.e1.a.kind
case dest.e1.a.kind
of 0:
`=wasMoved`(dest.e1.a.a)
dest.e1.a.a = src.e1.a.a
`=wasMoved`(dest.e1.a.b)
of 1:
`=wasMoved`(dest.e1.a.c)
`=copy`(dest.e1.a.c, src.e1.a.c)
case :tmp_553651276.kind
of 0:
of 1:
`=destroy`(:tmp_553651276.c)
```
(cherry picked from commit 262ff648aa)
I could trivially port Nim to NetBSD/aarch64 because it already
supported NetBSD and aarch64. I only needed to generate `c_code` for
this combination.
(cherry picked from commit 0ba932132e)
This adds a version of `almostEqual` (which was already available for
floats) thata works with `Complex[SomeFloat]`.
Proof that this is needed is that the first thing that the complex.nim
runnable examples block did before this commit was define (an
incomplete) `almostEqual` function that worked with complex values.
(cherry picked from commit d8e1504ed1)
fixes#23419
`void` is only supported as fields of objects/tuples. It shouldn't allow
void in the array.
I didn't merge it with taField because that flag is also used for
tyLent, which is allowed in the fields of other types.
(cherry picked from commit 185e06c923)
fixes#23321
In the function `mapType`, ptrs (tyPtr, tyVar, tyLent, tyRef)
are mapped into ctPtrToArray, the dereference of which is skipped
in the `genref`. We need to skip these ptrs in the function
`genOpenArraySlice`.
(cherry picked from commit d09c3c0f58)
Previously, in certain cases, the compiler would generate debug info for
the correct line number, but for the wrong .nim source file.
(cherry picked from commit 7e3bac9235)
This solution should resolve the nimsuggest crash issue. However,
perhaps the problem is in the parser?
fix#23518
(cherry picked from commit 60af04635f)
fixes#23326
In a routine declaration node in a template, if the routine is marked as
`gensym`, the compiler adds it as a new symbol to a preliminary scope of
the template. If it's not marked as gensym, then it searches the
preliminary scope of the template for the name of the routine, then when
it matches a template parameter or a gensym identifier, the compiler
replaces the name node with a symbol node of the found symbol.
This makes sense for the template parameter since it has to be replaced
later, but not really for the gensym identifier, as it doesn't allow us
to inject a routine with the same name as an identifier previously
declared as gensym (the problem in #23326 is when this is in another
`when` branch).
However this is the only channel to reuse a gensym symbol in a
declaration, so maybe removing it has side effects. For example if we
have:
```nim
proc foo(x: int) {.gensym.} = discard
proc foo(x: float) {.gensym.} = discard
```
it will not behave the same as
```nim
proc foo(x: int) {.gensym.} = discard
proc foo(x: float) = discard
```
behaved previously, which maybe allowed overloading over the gensym'd
symbols.
A note to the "undeclared identifier" error message has also been added
for a potential error code that implicitly depended on the old behavior
might give, namely ``undeclared identifier: 'abc`gensym123'``, which
happens when in a template an identifier is first declared gensym in
code that doesn't compile, then as a routine which injects by default,
then the identifier is used.
(cherry picked from commit 73b0b0d31c)
## Reprodution
if on Windows:
```Nim
when defined(windows):
var file: File
let succ = file.open(<aFileHandle>)
```
then `succ` will be false.
If tested, it can be found to fail with errno `22` and message: `Invalid
argument`
## Problem
After some investigations and tests,
I found it's due to the `mode` argument for `fdopen`.
Currently `NoInheritFlag`(`'N'` in Windows) is added to `mode` arg
passed to `_fdopen`, but if referring to
[Windows `_fdopen`
doc](https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/fdopen-wfdopen?view=msvc-170),
you'll find there is no `'N'` describled. That's `'N'` is not accepted
by `_fdopen`.
Therefore, the demo above will fail.
## In Addition
To begin with, technologically speaking, when opening with a
`fileHandle`(or called `fd`), there is no concept of fd-inheritable as
`fd` is opened already.
In POSIX, `NoInheritFlag` is defined as `e`.
It's pointed out in [POSIX `open`
man-doc](https://www.man7.org/linux/man-pages/man3/fopen.3.html) that
`e` in mode is ignored for fdopen(),
which means `e` for `fdopen()` is not wanted, just allowed.
Therefore, better to also not pass `e` to `fdopen`
---
In all, that's this PR.
(cherry picked from commit dee55f587f)
