==22844== Memcheck, a memory error detector
==22844== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==22844== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==22844== Command: ./test01
==22844== 
==22844== Invalid write of size 4
==22844==    at 0x10889D: f (test01.c:85)
==22844==    by 0x1087B0: main (test01.c:38)
==22844==  Address 0x522e0a8 is 0 bytes after a block of size 40 alloc'd
==22844==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22844==    by 0x1087F5: f (test01.c:75)
==22844==    by 0x1087B0: main (test01.c:38)
==22844== 
==22844== Invalid read of size 4
==22844==    at 0x1088B3: f (test01.c:86)
==22844==    by 0x1087B0: main (test01.c:38)
==22844==  Address 0x522e0a8 is 0 bytes after a block of size 40 alloc'd
==22844==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22844==    by 0x1087F5: f (test01.c:75)
==22844==    by 0x1087B0: main (test01.c:38)
==22844== 

TEST01:
  C version
  A sample code for analysis by VALGRIND.
   0   1
   1   1
   2   2
   3   3
   4   5
   5   8
   6  13
   7  21
   8  34
   9  55
  10  89

TEST01
  Normal end of execution.
==22844== 
==22844== HEAP SUMMARY:
==22844==     in use at exit: 0 bytes in 0 blocks
==22844==   total heap usage: 2 allocs, 2 frees, 4,136 bytes allocated
==22844== 
==22844== All heap blocks were freed -- no leaks are possible
==22844== 
==22844== For counts of detected and suppressed errors, rerun with: -v
==22844== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)