DOS ain't dead

CMOVNTQ and multiple file access (Developers)

posted by RayeR , CZ, 21.06.2012, 04:32

I tried to compile and run test program mentioned above under MSDOS 6.22 on FAT16 and it creates 1 lost cluster per every run (instead of returning NULL on second fopen call). I tried gcc 4.7.0, 4.7.1 and very old 2.95 and all behaved the same so it's not new gcc bug but rather libc / DOS bug.

#include <stdio.h>

main() {
FILE *f, *f2;
char test[10000];
f=fopen("test1","wb");
if (f==NULL)
  puts("f1 error");
fwrite(test,1,10000,f);
f2=fopen("test1","wb");
if (f2==NULL)
  puts("f2 error");
fwrite(test,1,10000,f2);
}


---
DOS gives me freedom to unlimited HW access.

Complete thread:

• DJGPP/GCC 4.6.2 invalid code generation when -march restrict - RayeR, 10.04.2012, 00:38 (Developers)
  • GCC 4.6.x invalid code generation - Rugxulo, 10.04.2012, 02:01
    • GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 03:58
      • GCC 4.6.x invalid code generation - Rugxulo, 10.04.2012, 05:58
        • GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 13:44
          • GCC 4.6.x invalid code generation - marcov, 10.04.2012, 16:19
            • GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 17:44
              • GCC 4.6.x invalid code generation - RayeR, 14.04.2012, 23:28
                • GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - Arjay, 15.04.2012, 09:05
                  • GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - RayeR, 15.04.2012, 14:44
                    • GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - RayeR, 26.04.2012, 01:50
                      • GCC 4.6.x invalid code generation - Rugxulo, 26.04.2012, 09:06
                        • GCC 4.6.x invalid code generation - RayeR, 28.04.2012, 02:14
                          • x264 0.124 update - RayeR, 01.05.2012, 17:57
                        • CMOVNTQ and multiple file access - DOS386, 16.06.2012, 12:53
                          • Multiple file access, FreeDOS file locking support - ecm, 16.06.2012, 14:31
                          • multiple file access / IUP 0.67 - Rugxulo, 16.06.2012, 17:48
                            • multiple file access / IUP 0.67 - DOS386, 17.06.2012, 09:33
                          • CMOVNTQ and multiple file access - RayeR, 19.06.2012, 20:38
                            • CMOVNTQ and multiple file access - RayeR, 21.06.2012, 04:32
                              • load SHARE - ecm, 21.06.2012, 05:06
                                • load SHARE - RayeR, 21.06.2012, 12:40
                                  • load SHARE - ecm, 21.06.2012, 12:47
                                    • load SHARE - RayeR, 21.06.2012, 19:58
                                      • load SHARE - RayeR, 21.06.2012, 23:31
                                      • load SHARE - ecm, 22.06.2012, 14:03
    • GCC 4.6.x invalid code generation - marcov, 10.04.2012, 16:16
      • GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 17:49