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Ran 16 Apr 2015 07:21PM UTC

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Committed 16 Apr 2015 07:03PM UTC coverage: 99.957% (-0.04%) from 100.0%

Job # CONF=debug ARCH=x86

Build Type

Pull #305

travis-ci

Committed by

pah

Commit Message

Avoid calling memcpy with NULL pointers

According to the C/C++ standards, calling `memcpy(NULL, NULL, 0)` is
undefined behaviour. Recent GCC versions may rely on this by optimizing
NULL pointer checks more aggressively, see [1].

This patch tries to avoid calling std::memcpy with zero elements.
As a side effect, explicitly return NULL when requesting an empty block
from MemoryPoolAllocator::Malloc.

This may be related to #301.

[1] https://gcc.gnu.org/gcc-4.9/porting_to.html

Pull Request Pull Request #305: Avoid calling memcpy with NULL pointers

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