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Question about implementation of new/delete and new[]/delete[] in gnu gcc
- From: Tim Schumacher <schumact at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Tue, 12 Mar 2013 00:02:03 -0600
- Subject: Question about implementation of new/delete and new[]/delete[] in gnu gcc
Hi All,
I am using debian linux with gcc 4.7.2.
I am curious and want to educate myself about the particular
implementations of the operators new, new[], delete and delete[].
Specifically, I was curious about what meta data is stored about the
allocations (size/# of elements in the array case), and where that data
is stored. I have the source for gcc-4.7.2 and I looked through it, but
it was not obvious where to start. I guess I was expecting to see some
sort of metadata structure placed in the heap right before the returned
pointer but I didn't see anything like that, or at least it was not
obvious to me if I was looking at it.
Does anyone know which source files contain the magic? Or better yet,
can anyone point me to a design doc that describes the overall strategy?
Thanks!
Tim