Invalid write of size 2
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:62)
 Address 0x........ is 0 bytes inside a block of size 1 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:62)

Invalid write of size 2
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:68)
 Address 0x........ is 0 bytes inside a block of size 1 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:68)

Invalid write of size 1
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:68)
 Address 0x........ is 1 bytes after a block of size 1 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:68)

Invalid write of size 1
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:71)
 Address 0x........ is 0 bytes after a block of size 2 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:71)

Invalid write of size 4
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:77)
 Address 0x........ is 0 bytes inside a block of size 1 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:77)

Invalid write of size 4
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:80)
 Address 0x........ is 0 bytes inside a block of size 2 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:80)

Invalid write of size 4
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:83)
 Address 0x........ is 0 bytes inside a block of size 3 alloc'd
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: main (cu21.c:83)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:94)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:99)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:104)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: do_cu21 (cu21.c:47)
   by 0x........: main (cu21.c:116)

