2 files changed, 85 insertions, 0 deletions
diff --git a/src/test/run-make-fulldeps/issue-19371/Makefile b/src/test/run-make-fulldeps/issue-19371/Makefile
new file mode 100644
index 000000000..9f3ec7846
--- /dev/null
+++ b/src/test/run-make-fulldeps/issue-19371/Makefile
@@ -0,0 +1,9 @@
+-include ../tools.mk
+
+# This test ensures that rustc compile_input can be called twice in one task
+# without causing a panic.
+# The program needs the path to rustc to get sysroot.
+
+all:
+	$(RUSTC) foo.rs
+	$(call RUN,foo $(TMPDIR) $(RUSTC))
diff --git a/src/test/run-make-fulldeps/issue-19371/foo.rs b/src/test/run-make-fulldeps/issue-19371/foo.rs
new file mode 100644
index 000000000..fd294b018
--- /dev/null
+++ b/src/test/run-make-fulldeps/issue-19371/foo.rs
@@ -0,0 +1,76 @@
+#![feature(rustc_private)]
+
+extern crate rustc_interface;
+extern crate rustc_driver;
+extern crate rustc_session;
+extern crate rustc_span;
+
+use rustc_session::DiagnosticOutput;
+use rustc_session::config::{Input, Options, OutputType, OutputTypes};
+use rustc_interface::interface;
+use rustc_span::source_map::FileName;
+
+use std::path::PathBuf;
+
+fn main() {
+    let src = r#"
+    fn main() {}
+    "#;
+
+    let args: Vec<String> = std::env::args().collect();
+
+    if args.len() < 4 {
+        panic!("expected rustc path");
+    }
+
+    let tmpdir = PathBuf::from(&args[1]);
+
+    let mut sysroot = PathBuf::from(&args[3]);
+    sysroot.pop();
+    sysroot.pop();
+
+    compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
+
+    compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
+}
+
+fn compile(code: String, output: PathBuf, sysroot: PathBuf) {
+    let mut opts = Options::default();
+    opts.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
+    opts.maybe_sysroot = Some(sysroot);
+
+    if let Ok(linker) = std::env::var("RUSTC_LINKER") {
+        opts.cg.linker = Some(linker.into());
+    }
+
+    let name = FileName::anon_source_code(&code);
+    let input = Input::Str { name, input: code };
+
+    let config = interface::Config {
+        opts,
+        crate_cfg: Default::default(),
+        crate_check_cfg: Default::default(),
+        input,
+        input_path: None,
+        output_file: Some(output),
+        output_dir: None,
+        file_loader: None,
+        diagnostic_output: DiagnosticOutput::Default,
+        lint_caps: Default::default(),
+        parse_sess_created: None,
+        register_lints: None,
+        override_queries: None,
+        make_codegen_backend: None,
+        registry: rustc_driver::diagnostics_registry(),
+    };
+
+    interface::run_compiler(config, |compiler| {
+        // This runs all the passes prior to linking, too.
+        let linker = compiler.enter(|queries| {
+            queries.linker()
+        });
+        if let Ok(linker) = linker {
+            linker.link();
+        }
+    });
+}