std missing is_console function for all *-win7-* targets

rustc 1.101.0-nightly (7df8138 2026-10-14) with -Zbuild-std
affected targets:
i686-win7-windows-gnu
i686-win7-windows-msvc
x86_64-win7-windows-gnu
x86_64-win7-windows-msvc

error[: cannot find function `is_console` in this scope
    ╭▸ /rustc/7df81381d027710708209f36b98d11b1c88f8d2e/library/std/src/sys/stdio/windows.rs:121:9
    │
121 │     if !is_console(handle) {
    ╰╴        ━━━━━━━━━━ not found in this scope

error[: cannot find function `is_console` in this scope
    ╭▸ /rustc/7df81381d027710708209f36b98d11b1c88f8d2e/library/std/src/sys/stdio/windows.rs:284:13
    │
284 │         if !is_console(handle) {
    ╰╴            ━━━━━━━━━━ not found in this scope

For more information about this error, try `rustc --explain E0425`.
error: could not compile `std` (lib) due to 2 previous errors

@rustbot

Yep, we saw that too in our nightly CI run. From what I can see, it looks like a trivial oversight, so I'll open a PR to fix it.

@rustbot claim

Oh, sorry I missed that, I think it was the move to cfg_select! that confused things. It'd be nice if we had CI check configs 🙂.

Rollup merge of rust-lang#164360 - PaulDance:patches/fix-win7-compila…

Unrolled build for #164360 in rollup 164418

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std missing `is_console` function for all `-win7-` targets #164340

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std missing is_console function for all *-win7-* targets #164340

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PaulDance commented on Oct 15, 2026

ChrisDenton commented on Oct 15, 2026

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std missing `is_console` function for all `-win7-` targets #164340