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@ -30,9 +30,9 @@ |
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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.\" SUCH DAMAGE. |
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.\" |
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.\" $OpenBSD: malloc.3,v 1.113 2017/04/17 18:07:15 otto Exp $ |
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.\" $OpenBSD: malloc.3,v 1.114 2017/04/23 06:36:36 otto Exp $ |
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.\" |
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.Dd $Mdocdate: April 17 2017 $ |
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.Dd $Mdocdate: April 23 2017 $ |
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.Dt MALLOC 3 |
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.Os |
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.Sh NAME |
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@ -155,16 +155,21 @@ and checks for integer overflow in the calculation |
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Used for the allocation of memory holding sensitive data, |
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the |
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.Fn recallocarray |
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and |
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.Fn freezeo |
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functions guarantee that memory becoming unallocated is explicitly |
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.Em discarded , |
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meaning pages of memory are disposed via |
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.Xr munmap 2 |
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and cached free objects are cleared with |
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.Xr explicit_bzero 3 . |
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.Pp |
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The |
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.Fn recallocarray |
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function is similar to |
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.Fn reallocarray |
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except it ensures newly allocated memory is cleared similar to |
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.Fn calloc . |
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Memory that becomes unallocated while shrinking or moving existing |
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allocations is explicitly discarded (meaning, pages of memory |
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are disposed via |
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.Xr munmap 2 , |
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and smaller allocations are cleared with |
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.Xr explicit_bzero 3 ) . |
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If |
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.Fa ptr |
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is |
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