mirror of
https://github.com/odin-lang/Odin.git
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9f55404845
Although the FreeBSD link matches Darwin, its EILSEQ still matches Linux.
Confirmed with the following program:
```odin
package main
import "core:c/libc"
main :: proc() {
libc.printf("%d\n", libc.errno()^) // 0
_ = libc.fopen("nonexistent file", "r")
libc.printf("%d\n", libc.errno()^) // 2
}
```
on Linux:
Odin: dev-2022-10:075040ae
OS: Manjaro Linux, Linux 5.10.147-1-MANJARO
CPU: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
RAM: 15953 MiB
and FreeBSD:
Odin: dev-2022-10:075040ae
OS: FreeBSD: Unknown
CPU: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
RAM: 990 MiB
FreeBSD uname -r: 13.0-RELEASE
90 lines
1.6 KiB
Odin
90 lines
1.6 KiB
Odin
package libc
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// 7.5 Errors
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when ODIN_OS == .Windows {
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foreign import libc "system:libucrt.lib"
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} else when ODIN_OS == .Darwin {
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foreign import libc "system:System.framework"
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} else {
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foreign import libc "system:c"
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}
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// C11 standard only requires the definition of:
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// EDOM,
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// EILSEQ
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// ERANGE
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when ODIN_OS == .Linux {
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@(private="file")
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@(default_calling_convention="c")
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foreign libc {
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@(link_name="__errno_location")
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_get_errno :: proc() -> ^int ---
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}
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EDOM :: 33
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EILSEQ :: 84
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ERANGE :: 34
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}
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when ODIN_OS == .FreeBSD {
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@(private="file")
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@(default_calling_convention="c")
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foreign libc {
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@(link_name="__error")
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_get_errno :: proc() -> ^int ---
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}
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EDOM :: 33
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EILSEQ :: 84
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ERANGE :: 34
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}
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when ODIN_OS == .OpenBSD {
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@(private="file")
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@(default_calling_convention="c")
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foreign libc {
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@(link_name="__errno")
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_get_errno :: proc() -> ^int ---
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}
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EDOM :: 33
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EILSEQ :: 84
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ERANGE :: 34
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}
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when ODIN_OS == .Windows {
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@(private="file")
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@(default_calling_convention="c")
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foreign libc {
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@(link_name="_errno")
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_get_errno :: proc() -> ^int ---
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}
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EDOM :: 33
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EILSEQ :: 42
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ERANGE :: 34
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}
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when ODIN_OS == .Darwin {
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@(private="file")
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@(default_calling_convention="c")
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foreign libc {
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@(link_name="__error")
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_get_errno :: proc() -> ^int ---
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}
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// Unknown
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EDOM :: 33
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EILSEQ :: 92
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ERANGE :: 34
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}
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// Odin has no way to make an identifier "errno" behave as a function call to
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// read the value, or to produce an lvalue such that you can assign a different
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// error value to errno. To work around this, just expose it as a function like
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// it actually is.
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errno :: #force_inline proc() -> ^int {
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return _get_errno()
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}
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