diff options
| author | Matthias Krüger <476013+matthiaskrgr@users.noreply.github.com> | 2025-03-20 15:36:19 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-03-20 15:36:19 +0100 |
| commit | 28fc422f30c80aedfa6c4dc52e3f457846c02856 (patch) | |
| tree | ca18302495211e392ea12937ea1619747a0abf90 | |
| parent | 915576935af08106f302829295a5ebcd4a530f89 (diff) | |
| parent | 5a52b5d92aec9427b40aee6a20093eb822702402 (diff) | |
Rollup merge of #138700 - xizheyin:issue-138612, r=Nadrieril
Suggest `-Whelp` when pass `--print lints` to rustc Closes #138612
| -rw-r--r-- | compiler/rustc_session/src/config.rs | 6 | ||||
| -rw-r--r-- | tests/ui/invalid-compile-flags/print.stderr | 1 | ||||
| -rw-r--r-- | tests/ui/rustc-print-info-issue-138612.rs | 2 | ||||
| -rw-r--r-- | tests/ui/rustc-print-info-issue-138612.stderr | 6 |
4 files changed, 15 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index 701d06e4fd4..43b78423c72 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -2082,6 +2082,12 @@ fn emit_unknown_print_request_help(early_dcx: &EarlyDiagCtxt, req: &str) -> ! { let mut diag = early_dcx.early_struct_fatal(format!("unknown print request: `{req}`")); #[allow(rustc::diagnostic_outside_of_impl)] diag.help(format!("valid print requests are: {prints}")); + + if req == "lints" { + diag.help(format!("use `-Whelp` to print a list of lints")); + } + + diag.help(format!("for more information, see the rustc book: https://doc.rust-lang.org/rustc/command-line-arguments.html#--print-print-compiler-information")); diag.emit() } diff --git a/tests/ui/invalid-compile-flags/print.stderr b/tests/ui/invalid-compile-flags/print.stderr index df0c3977dc8..4ea06a06539 100644 --- a/tests/ui/invalid-compile-flags/print.stderr +++ b/tests/ui/invalid-compile-flags/print.stderr @@ -1,4 +1,5 @@ error: unknown print request: `yyyy` | = help: valid print requests are: `all-target-specs-json`, `calling-conventions`, `cfg`, `check-cfg`, `code-models`, `crate-name`, `deployment-target`, `file-names`, `host-tuple`, `link-args`, `native-static-libs`, `relocation-models`, `split-debuginfo`, `stack-protector-strategies`, `sysroot`, `target-cpus`, `target-features`, `target-libdir`, `target-list`, `target-spec-json`, `tls-models` + = help: for more information, see the rustc book: https://doc.rust-lang.org/rustc/command-line-arguments.html#--print-print-compiler-information diff --git a/tests/ui/rustc-print-info-issue-138612.rs b/tests/ui/rustc-print-info-issue-138612.rs new file mode 100644 index 00000000000..65b595635b1 --- /dev/null +++ b/tests/ui/rustc-print-info-issue-138612.rs @@ -0,0 +1,2 @@ +//@ check-fail +//@ compile-flags: /dev/null --print lints diff --git a/tests/ui/rustc-print-info-issue-138612.stderr b/tests/ui/rustc-print-info-issue-138612.stderr new file mode 100644 index 00000000000..4f7ed821952 --- /dev/null +++ b/tests/ui/rustc-print-info-issue-138612.stderr @@ -0,0 +1,6 @@ +error: unknown print request: `lints` + | + = help: valid print requests are: `all-target-specs-json`, `calling-conventions`, `cfg`, `check-cfg`, `code-models`, `crate-name`, `deployment-target`, `file-names`, `host-tuple`, `link-args`, `native-static-libs`, `relocation-models`, `split-debuginfo`, `stack-protector-strategies`, `sysroot`, `target-cpus`, `target-features`, `target-libdir`, `target-list`, `target-spec-json`, `tls-models` + = help: use `-Whelp` to print a list of lints + = help: for more information, see the rustc book: https://doc.rust-lang.org/rustc/command-line-arguments.html#--print-print-compiler-information + |