Adding a deprecation warning for no-stack-check codegen option.

rust-lang · Nov 8, 2016 · c670293 · c670293
1 parent c2a1c7f
commit c670293
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
@@ -2444,4 +2444,4 @@ mod tests {
         opts.debugging_opts.mir_opt_level = Some(1);
         assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
     }
-}
+}
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
@@ -75,7 +75,7 @@ use rustc::dep_graph::DepGraph;
 use rustc::session::{self, config, Session, build_session, CompileResult};
 use rustc::session::config::{Input, PrintRequest, OutputType, ErrorOutputType};
 use rustc::session::config::nightly_options;
-use rustc::session::early_error;
+use rustc::session::{early_error, early_warn};
 use rustc::lint::Lint;
 use rustc::lint;
 use rustc_metadata::locator;
@@ -1011,6 +1011,11 @@ pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
         return None;
     }
 
+    if cg_flags.iter().any(|x| *x == "no-stack-check") {
+        early_warn(ErrorOutputType::default(),
+                   "the --no-stack-check flag is deprecated and does nothing");
+    }
+
     if cg_flags.contains(&"passes=list".to_string()) {
         unsafe {
             ::llvm::LLVMRustPrintPasses();