Barry Smith <bsm...@mcs.anl.gov> writes: > The special malloc would need to save the locations at which it set > the addresses and then switch the address to NULL. Then the code > that used those locations would have to know that they that they may > be set to NULL and hence check them before use.
And then PetscMalloc(...,&tmp); foo->data = tmp; creates SEGV at some unpredictable time. Awesome! > I am not saying this particular thing would be practical or not, > just that if we had a concept of a malloc context for each malloc > there are many games we could try that we couldn't try otherwise and > this is just one of them. I'm not convinced, except in the case of mixing in madvise hints.
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