Hi Tiran, Am 11.12.2011 21:57, schrieb Tiran Kaskas: > Looking into the function alloc_buf_gc() in file buffer.c, it returns a > struct buffer, which seems to me is allocated on the stack, which is > causing an issue, I believe, since the function calling alloc_buf_gc() > will work on a buffer which becomes garbage.
'alloc_buf_gc()' is returning 'buf' (of type 'struct buffer') by value, not by pointer, so there is no problem here. If it were returning 'buf' by pointer your observation would be correct. (In C++ a typical mistake would be to return 'buf' by reference.) The function calling 'alloc_buf_gc()' will copy the contents of 'buf' to its local instance of 'struct buffer' before continuing. (An optimised build might even eliminate the copy.) Are you observing a specific problem with buffers or did you just happen to stumble over this piece of code? Cheers Fabian
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