prevent loading garbage

2021-11-17 15:01:13 +10:00
parent 43dc821982
commit 3b9e384ecb
1 changed files with 10 additions and 1 deletions
@@ -469,7 +469,16 @@ diskio::convert_token(eT& val, const std::string& token)
      {
      // unsigned integer
      
-      if(str[0] == '-')  { val = eT(0);  return true; }
+      if((str[0] == '-') && (N >= 2))
+        {
+        const char* str_offset1 = &(str[1]);
+        
+        std::strtoull(str_offset1, &endptr, 10);
+        
+        if(str_offset1 == endptr)  { return false; }
+        
+        val = eT(0);  return true;
+        }
      
      val = eT( std::strtoull(str, &endptr, 10) );
      }