valgrind抱怨__mktime - 是我的錯嗎？

第一次（在我的新開發環境中），我看到valgrind抱怨mktime，但我不確定這是libc庫，valgrind還是我的代碼中的錯誤。我會從錯誤開始（下面） - 是否有足夠的信息來解釋原因？valgrind抱怨__mktime - 是我的錯嗎？

==3682== at 0x38ACE9A505: __mktime_internal (in /lib64/libc-2.12.so) 
==3682== by 0x4D66F7: ??? 
==3682== by 0x4D7611: ??? 
==3682== by 0x4D23CD: ??? 
==3682== by 0x4D175B: ??? 
==3682== by 0x38ACE1ECDC: (below main) (in /lib64/libc-2.12.so) 
==3682== Uninitialised value was created by a stack allocation 
==3682== at 0x4D64BE: ??? 
==3682== 
==3682== Conditional jump or move depends on uninitialised value(s) 
==3682== at 0x38ACE9A505: __mktime_internal (in /lib64/libc-2.12.so) 
==3682== by 0x4D67DA: ??? 
==3682== by 0x4D7611: ??? 
==3682== by 0x4D23CD: ??? 
==3682== by 0x4D175B: ??? 
==3682== by 0x38ACE1ECDC: (below main) (in /lib64/libc-2.12.so) 
==3682== Uninitialised value was created by a stack allocation 
==3682== at 0x4D64BE: ???

來源

2012-01-27 Michelle Dupuis

對於其他人誰運行到這...

的結構是由strptime，這顯然並不在結構成員填補未使用（DST）充滿...但mktime不喜歡這樣:)所以memset它爲零

來源

2012-01-28 01:51:43

這是一個非常普遍的錯誤。如果您希望mktime確定tm_isdst的正確值，請將其設置爲-1（如mktime手冊頁中所述）。 – 2012-01-28 17:20:50

或者 - 建議[這裏]（http://www.ex-parrot.com/~chris/random/initialise.html） - 而不是memset'ting，用struct struct tm date來初始化零結構= {0};' – freitass 2013-05-23 16:08:03

valgrind抱怨__mktime - 是我的錯嗎？

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