Add run-make test print-in-stable-or-unstable-channel

Signed-off-by: xizheyin <[email protected]>

Author: xizheyin

compiler/rustc_session/src/config.rs

@@ -2094,15 +2094,15 @@ fn check_print_request_stability(
     unstable_opts: &UnstableOptions,
     (print_name, print_kind): (&str, PrintKind),
 ) {
-    if !is_print_request_stability(print_kind) && !unstable_opts.unstable_options {
+    if !is_print_request_stable(print_kind) && !unstable_opts.unstable_options {
         early_dcx.early_fatal(format!(
             "the `-Z unstable-options` flag must also be passed to enable the `{print_name}` \
                 print option"
         ));
     }
 }
 
-fn is_print_request_stability(print_kind: PrintKind) -> bool {
+fn is_print_request_stable(print_kind: PrintKind) -> bool {
     match print_kind {
         PrintKind::AllTargetSpecsJson
         | PrintKind::CheckCfg
@@ -2118,7 +2118,7 @@ fn emit_unknown_print_request_help(early_dcx: &EarlyDiagCtxt, req: &str, is_nigh
         .iter()
         .filter_map(|(name, kind)| {
             // If we're not on nightly, we don't want to print unstable options
-            if !is_nightly && !is_print_request_stability(*kind) {
+            if !is_nightly && !is_print_request_stable(*kind) {
                 None
             } else {
                 Some(format!("`{name}`"))

tests/run-make/print-request-help-stable-unstable/help-diff.diff

@@ -0,0 +1,7 @@
+@@ -1,5 +1,5 @@
+ error: unknown print request: `xxx`
+   |
+-  = help: valid print requests are: `calling-conventions`, `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`, `tls-models`
++  = help: valid print requests are: `all-target-specs-json`, `calling-conventions`, `cfg`, `check-cfg`, `code-models`, `crate-name`, `crate-root-lint-levels`, `deployment-target`, `file-names`, `host-tuple`, `link-args`, `native-static-libs`, `relocation-models`, `split-debuginfo`, `stack-protector-strategies`, `supported-crate-types`, `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
+ 

tests/run-make/print-request-help-stable-unstable/rmake.rs

@@ -0,0 +1,33 @@
+//! Check that unstable print requests are omitted from help if compiler is in stable channel.
+//!
+//! Issue: <https://github.com/rust-lang/rust/issues/138698>
+use run_make_support::{diff, rustc, similar};
+
+fn main() {
+    let stable_invalid_print_request_help = rustc()
+        .env("RUSTC_BOOTSTRAP", "-1")
+        .cfg("force_stable")
+        .print("xxx")
+        .run_fail()
+        .stderr_utf8();
+    assert!(!stable_invalid_print_request_help.contains("all-target-specs-json"));
+    diff()
+        .expected_file("stable-invalid-print-request-help.err")
+        .actual_text("stable_invalid_print_request_help", &stable_invalid_print_request_help)
+        .run();
+
+    let unstable_invalid_print_request_help = rustc().print("xxx").run_fail().stderr_utf8();
+    assert!(unstable_invalid_print_request_help.contains("all-target-specs-json"));
+    diff()
+        .expected_file("unstable-invalid-print-request-help.err")
+        .actual_text("unstable_invalid_print_request_help", &unstable_invalid_print_request_help)
+        .run();
+
+    let help_diff = similar::TextDiff::from_lines(
+        &stable_invalid_print_request_help,
+        &unstable_invalid_print_request_help,
+    )
+    .unified_diff()
+    .to_string();
+    diff().expected_file("help-diff.diff").actual_text("help_diff", help_diff).run();
+}

tests/run-make/print-request-help-stable-unstable/stable-invalid-print-request-help.err

@@ -0,0 +1,5 @@
+error: unknown print request: `xxx`
+  |
+  = help: valid print requests are: `calling-conventions`, `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`, `tls-models`
+  = help: for more information, see the rustc book: https://doc.rust-lang.org/rustc/command-line-arguments.html#--print-print-compiler-information
+

tests/run-make/print-request-help-stable-unstable/unstable-invalid-print-request-help.err

@@ -0,0 +1,5 @@
+error: unknown print request: `xxx`
+  |
+  = help: valid print requests are: `all-target-specs-json`, `calling-conventions`, `cfg`, `check-cfg`, `code-models`, `crate-name`, `crate-root-lint-levels`, `deployment-target`, `file-names`, `host-tuple`, `link-args`, `native-static-libs`, `relocation-models`, `split-debuginfo`, `stack-protector-strategies`, `supported-crate-types`, `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
+