From e232a176d8bb0e2ccd510028d22a76f48eccf1c5 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Tue, 6 Apr 2021 19:54:51 -0600
Subject: correctly categories not-found vs other errors in included files

---
 src/makefile/input.rs | 37 +++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index 912b119..e5473a1 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -2,7 +2,7 @@ use std::cell::Cell;
 use std::collections::HashMap;
 use std::error::Error as StdError;
 use std::fs::File;
-use std::io::{BufRead, BufReader, Cursor, Error as IoError, Lines};
+use std::io::{BufRead, BufReader, Cursor, Error as IoError, ErrorKind as IoErrorKind, Lines};
 use std::iter::Peekable;
 use std::path::Path;
 
@@ -254,19 +254,28 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
                     let child_macros = self.macros.with_overlay();
                     let child = MakefileReader::read_file(self.args, child_macros, field)
                         .with_context(|| format!("while including {}", field));
-                    if let Ok(child) = child {
-                        let child = child.finish();
-                        self.extend(child);
-                    } else {
-                        if !original_line.starts_with('-') {
-                            // TODO handle non-file-not-found errors
-                            log::error!(
-                                "{}:{}: included makefile {} not found",
-                                &self.file_name,
-                                line_number,
-                                field
-                            );
-                            self.failed_includes.push(field.to_owned());
+                    match child {
+                        Ok(child) => {
+                            let child = child.finish();
+                            self.extend(child);
+                        }
+                        Err(err) => {
+                            if !original_line.starts_with('-') {
+                                match err.downcast_ref::<IoError>() {
+                                    Some(err) if err.kind() == IoErrorKind::NotFound => {
+                                        log::error!(
+                                            "{}:{}: included makefile {} not found",
+                                            &self.file_name,
+                                            line_number,
+                                            field,
+                                        );
+                                        self.failed_includes.push(field.to_owned());
+                                    }
+                                    _ => {
+                                        return Err(err);
+                                    }
+                                }
+                            }
                         }
                     }
                 }
-- 
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