From d7b3821c0aa6402a89dd10f1e47e58524a8fe977 Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Sat, 4 Oct 2014 14:27:08 -0700
Subject: [PATCH] Use ferror instead of checking errno to detect errors in
 read_file

glibc sets errno even though the file read did not have an error
Fixes #1731
---
 fish_indent.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fish_indent.cpp b/fish_indent.cpp
index 1332db5e8..21ffd47f7 100644
--- a/fish_indent.cpp
+++ b/fish_indent.cpp
@@ -54,11 +54,10 @@ static void read_file(FILE *f, wcstring &b)
 {
     while (1)
     {
-        errno=0;
         wint_t c = fgetwc(f);
         if (c == WEOF)
         {
-            if (errno)
+            if (ferror(f))
             {
                 wperror(L"fgetwc");
                 exit(1);