On 02/06/11 13:04, Jonas Maebe wrote:
On 02 Jun 2011, at 10:35, Henry Vermaak wrote:
If you add cmem to the start of your uses list, all the memory operations are
routed through the c memory manager. You should then be able to use Free
safely for pointers that were allocated by your library.
That is incorrect. The cmem unit adds extra size information to all allocated memory blocks (for so
that memsize() works). Additionally, most C++ memory allocations happen via new/delete, and using
libc's "free" to free a memory block allocated by "new" is almost guaranteed to
cause crashes down the line.
So it works in C, but not C++? Or have I completely misunderstood the
documentation?
You'd have to write a separate cppmem unit that exports the various kinds of
new/delete helpers. To make things extra fun, their mangled names depend on the
used C++ compiler and sometimes even version (and also which helpers exist can
change, e.g., I believe older g++ versions had a single helper for delete and
delete[], which the current versions have two different ones for that).
Or write a function for the library that takes care of disposing pointers.
Henry
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