Update .s documentation

[rmac] / direct.c

diff --git a/direct.c b/direct.c
index d6d6c3f2e63499d7301253b41f9881eb72daef08..809bb79090460d4632a7c397e5de0061819af491 100644 (file)
--- a/direct.c
+++ b/direct.c
@@ -1,7 +1,7 @@
 //
-// RMAC - Reboot's Macro Assembler for all Atari computers
+// RMAC - Renamed Macro Assembler for all Atari computers
 // DIRECT.C - Directive Handling
-// Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2021 Reboot and Friends
 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
 // Source utilised with the kind permission of Landon Dyer
 //
@@ -622,6 +622,10 @@ allright:
                                        close(fd);
                                        return ERROR;
                                }
+                               if ((int64_t)size <= 0)
+                               {
+                                       return error("invalid incbin size requested");
+                               }
                        }
                        else
                                size = lseek(fd, 0L, SEEK_END);
@@ -641,7 +645,10 @@ allright:
                                        }
 
                                        lseek(fd, pos, SEEK_SET);
-                                       size -= pos;
+                                       if ((int64_t)(size - pos) < 0)
+                                       {
+                                               return error("requested incbin size out of range");
+                                       }
                                }
                                else
                                {