Is alloca part of the C++ standard?
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No. The answer says it all.
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Not only is it not part of the C++ standard, it is not part of any standard. It's not part of C nor is it part of POSIX. Furthermore, allow me to quote from the Linux man page for alloca(3):
The alloca() function is machine and compiler dependent. On many systems its implementation is buggy. Its use is discouraged.
(emphasis added)
Dan Moulding
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What about embedded systems?? – Danijel Oct 18 '19 at 08:56
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Is there something equivalent to `alloca` (i.e. something that allocates a dynamic amount of memory on the stack) that **is** part of the C standard? – mercury0114 Oct 04 '20 at 20:15
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@mercury0114 There is C99's variable length arrays that do something a bit similar, although the scope of the allocation is not the same as with `alloca`. – madmann91 Dec 05 '20 at 14:20