[fpc-pascal] alloca

[Jonas Maebe]

On 14/05/2022 03:34, Hairy Pixels via fpc-pascal wrote:
>> On May 13, 2022, at 11:08 PM, Michael Van Canneyt via fpc-pascal<fpc-pascal at lists.freepascal.org>  wrote:
>>
>>> Is there an “alloca" like function in the RTL which allocates memory from the stack? For examplehttps://man7.org/linux/man-pages/man3/alloca.3.html
>> No such function exists in FPC.
> Is alloca something which is part of the OS or can this be implemented by programmers or used from other libraries?

It compiler support for the allocation to actually happen on the stack. 
When it's actually implemented in a library (rather than redirect to a 
compiler intrinsic via a C macro), it will generally just allocate on 
the heap instead.


Jonas