Invalid write of size 1
   at 0x........: main (badaddrvalue.c:8)
 Address 0x........ is 1 bytes before a block of size 8 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (badaddrvalue.c:7)

Invalid read of size 1
   at 0x........: main (badaddrvalue.c:9)
 Address 0x........ is 1 bytes before a block of size 8 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (badaddrvalue.c:7)
