Invalid write of size 1
   at 0x........: main (malloc2.c:39)
   by 0x........: __libc_start_main (...libc...)
   by 0x........: free@@GLIBC_2.0 (in /.../tests/malloc2)
   Address 0x........ is 0 bytes inside a block of size 429 free'd
   at 0x........: free (vg_clientfuncs.c:...)
   by 0x........: main (malloc2.c:38)
   by 0x........: __libc_start_main (...libc...)
   by 0x........: free@@GLIBC_2.0 (in /.../tests/malloc2)

Invalid free() / delete / delete[]
   at 0x........: free (vg_clientfuncs.c:...)
   by 0x........: main (malloc2.c:43)
   by 0x........: __libc_start_main (...libc...)
   by 0x........: free@@GLIBC_2.0 (in /.../tests/malloc2)
   Address 0x........ is 0 bytes inside a block of size 429 free'd
   at 0x........: free (vg_clientfuncs.c:...)
   by 0x........: main (malloc2.c:38)
   by 0x........: __libc_start_main (...libc...)
   by 0x........: free@@GLIBC_2.0 (in /.../tests/malloc2)

ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
malloc/free: in use at exit: 0 bytes in 0 blocks.
malloc/free: 443 allocs, 444 frees, 265463 bytes allocated.
For a detailed leak analysis,  rerun with: --leak-check=yes
For counts of detected errors, rerun with: -v