Invalid write of size 1
   at 0x........: really (malloc1.c:20)
   by 0x........: main (malloc1.c:9)
 Address 0x........ is 1 bytes inside a block of size 10 free'd
   at 0x........: free (vg_replace_malloc.c:...)
   by 0x........: really (malloc1.c:19)
   by 0x........: main (malloc1.c:9)

Invalid write of size 1
   at 0x........: really (malloc1.c:23)
   by 0x........: main (malloc1.c:9)
 Address 0x........ is 1 bytes before a block of size 10 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: really (malloc1.c:21)
   by 0x........: main (malloc1.c:9)

