From 2dd75ce6f0c08ef7c1dcf38a1ccf376edbeadf13 Mon Sep 17 00:00:00 2001
From: Laurent Mazet <mazet@softndesign.org>
Date: Sun, 13 Apr 2025 14:09:10 +0200
Subject: [PATCH] fix potential issues

---
 block.c    |  4 ++--
 function.c | 16 ++++++++++------
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/block.c b/block.c
index 9c9fca8..3460d03 100644
--- a/block.c
+++ b/block.c
@@ -60,13 +60,13 @@ static void _init_color_pairs () {
 
 void mvaddcb (int y, int x, cblock_t color)
 {
-    int init = 1;
+    static int init = 1;
     if (init) {
         _init_color_pairs ();
         init = 0;
     }
 
-    int symb = ACS_CKBOARD;
+    int symb;
     switch (color) {
     case black:
     case gray:
diff --git a/function.c b/function.c
index 1550b67..ac067b8 100644
--- a/function.c
+++ b/function.c
@@ -157,13 +157,17 @@ char *readdata (char *filename)
     if (fd) {
         fseek (fd, 0, SEEK_END);
         int size = ftell (fd);
-        buffer = (char *) calloc (size + 1, 1);
-        CHECKALLOC (buffer);
+        if (size == -1) {
+            VERBOSE (WARNING, printf ("can't read file (%s)\n", filename));
+        } else {
+            buffer = (char *) calloc (size + 1, 1);
+            CHECKALLOC (buffer);
 
-        fseek (fd, 0, SEEK_SET);
-        int nb = fread (buffer, 1, size, fd);
-        if (nb != size) {
-            VERBOSE (WARNING, printf ("can't fully read file (%s)\n", filename));
+            fseek (fd, 0, SEEK_SET);
+            int nb = fread (buffer, 1, size, fd);
+            if (nb != size) {
+                VERBOSE (WARNING, printf ("can't fully read file (%s)\n", filename));
+            }
         }
         fclose (fd);
     }
-- 
2.30.2