==13010== Memcheck, a memory error detector

==13010== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.

==13010== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info

==13010== Command: ./a.out

==13010== 

==13010== Syscall param pwrite64(buf) points to uninitialised byte(s)

==13010==    at 0x42319D3: pwrite (pwrite.c:46)

==13010==    by 0x403AB25: mdb_page_flush (mdb.c:3160)

==13010==    by 0x4043AD0: mdb_txn_commit (mdb.c:3416)

==13010==    by 0x8048A13: main (in /home/yihuang/src/mdb/libraries/liblmdb/a.out)

==13010==  Address 0x43c35b4 is 4,084 bytes inside a block of size 4,096 alloc'd

==13010==    at 0x402BE18: malloc (vg_replace_malloc.c:270)

==13010==    by 0x403AE47: mdb_page_malloc.isra.13 (mdb.c:1615)

==13010==    by 0x403D281: mdb_page_alloc.isra.22 (mdb.c:2120)

==13010==    by 0x403D446: mdb_page_touch (mdb.c:2252)

==13010==    by 0x403EEED: mdb_cursor_touch (mdb.c:6019)

==13010== 

key: 0x4643fdc 020 , data: 0x4643fe0 020 3141592 foo bar

==13010== 

==13010== HEAP SUMMARY:

==13010==     in use at exit: 0 bytes in 0 blocks

==13010==   total heap usage: 15 allocs, 15 frees, 1,586,385 bytes allocated

==13010== 

==13010== All heap blocks were freed -- no leaks are possible

==13010== 

==13010== For counts of detected and suppressed errors, rerun with: -v

==13010== Use --track-origins=yes to see where uninitialised values come from

==13010== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)