error console shows "GuardMalloc"

May i know y? it shows error like this(following error).may i know what for it shows me like this

GuardMalloc: Allocations will be placed开发者_C百科 on 16 byte boundaries. GuardMalloc: - Some buffer overruns may not be noticed. GuardMalloc: - Applications using vector instructions (e.g., SSE or Altivec) should work. GuardMalloc: GuardMalloc version 18

With regards

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That looks informational, rather than an error...