Stabilize force-warn

Author: inquisitivecrystal

compiler/rustc_session/src/config.rs

@@ -1157,19 +1157,10 @@ pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
 pub fn get_cmd_lint_options(
     matches: &getopts::Matches,
     error_format: ErrorOutputType,
-    debugging_opts: &DebuggingOptions,
 ) -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
     let mut lint_opts_with_position = vec![];
     let mut describe_lints = false;
 
-    if !debugging_opts.unstable_options && matches.opt_present("force-warn") {
-        early_error(
-            error_format,
-            "the `-Z unstable-options` flag must also be passed to enable \
-            the flag `--force-warn=lints`",
-        );
-    }
-
     for level in [lint::Allow, lint::Warn, lint::ForceWarn, lint::Deny, lint::Forbid] {
         for (arg_pos, lint_name) in matches.opt_strs_pos(level.as_str()) {
             if lint_name == "help" {
@@ -1959,8 +1950,7 @@ pub fn build_session_options(matches: &getopts::Matches) -> Options {
         .unwrap_or_else(|e| early_error(error_format, &e[..]));
 
     let mut debugging_opts = DebuggingOptions::build(matches, error_format);
-    let (lint_opts, describe_lints, lint_cap) =
-        get_cmd_lint_options(matches, error_format, &debugging_opts);
+    let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
 
     check_debug_option_stability(&debugging_opts, error_format, json_rendered);
 

src/librustdoc/config.rs

@@ -671,8 +671,7 @@ impl Options {
             return Err(1);
         }
 
-        let (lint_opts, describe_lints, lint_cap) =
-            get_cmd_lint_options(matches, error_format, &debugging_opts);
+        let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
 
         Ok(Options {
             input,

src/librustdoc/lib.rs

@@ -505,7 +505,7 @@ fn opts() -> Vec<RustcOptGroup> {
         }),
         stable("allow", |o| o.optmulti("A", "allow", "Set lint allowed", "LINT")),
         stable("warn", |o| o.optmulti("W", "warn", "Set lint warnings", "LINT")),
-        unstable("force-warn", |o| o.optmulti("", "force-warn", "Set lint force-warn", "LINT")),
+        stable("force-warn", |o| o.optmulti("", "force-warn", "Set lint force-warn", "LINT")),
         stable("deny", |o| o.optmulti("D", "deny", "Set lint denied", "LINT")),
         stable("forbid", |o| o.optmulti("F", "forbid", "Set lint forbidden", "LINT")),
         stable("cap-lints", |o| {