From 44d0f3cfa2e5c7d4d99e689560caa34eae5c4683 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Sun, 29 Dec 2013 20:11:05 +0200
Subject: [PATCH] Handle return value of read() call.

---
 py/lexerunix.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/py/lexerunix.c b/py/lexerunix.c
index ac07781b5a..80daf6009a 100644
--- a/py/lexerunix.c
+++ b/py/lexerunix.c
@@ -48,8 +48,13 @@ mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
     uint size = lseek(fd, 0, SEEK_END);
     lseek(fd, 0, SEEK_SET);
     char *data = m_new(char, size);
-    read(fd, data, size);
+    int read_size = read(fd, data, size);
     close(fd);
+    if (read_size != size) {
+        printf("error reading file %s\n", filename);
+        m_free(data);
+        return NULL;
+    }
 
     return mp_lexer_new_from_str_len(filename, data, size, true);
 }