From 3ba5b23dab4b6e24b40a7584a9107804ca8cf28d Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Sun, 10 Jun 2018 07:51:10 +0200
Subject: [PATCH] mescc: Support binutils-2.10.1: opentype `r+'.

* lib/libc+tcc.c (fopen): Support opentype `r+'.
---
 lib/libc+tcc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/libc+tcc.c b/lib/libc+tcc.c
index b7bdd0f2..bd4bbfb9 100644
--- a/lib/libc+tcc.c
+++ b/lib/libc+tcc.c
@@ -189,12 +189,14 @@ fopen (char const *file_name, char const *opentype)
 {
   int fd;
   int mode = 0600;
-  if (opentype[0] == 'a' && !access (file_name, O_RDONLY))
+  if ((opentype[0] == 'a' || !strcmp (opentype, "r+"))
+      && !access (file_name, O_RDONLY))
     {
       fd = open (file_name, O_RDWR, mode);
-      lseek (fd, 0, SEEK_END);
+      if (opentype[0] == 'a')
+        lseek (fd, 0, SEEK_END);
     }
-  else if (opentype[0] == 'w' || opentype[0] == 'a')
+  else if (opentype[0] == 'w' || opentype[0] == 'a' || !strcmp (opentype, "r+"))
     {
       char *plus_p = strchr (opentype, '+');
       int flags = plus_p ? O_RDWR | O_CREAT : O_WRONLY | O_CREAT | O_TRUNC;