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From: The Natural Philosopher <tnp@invalid.invalid>
Newsgroups: alt.folklore.computers,comp.os.linux.misc
Subject: Re: The joy of FORTRAN-like languages
Date: Mon, 30 Sep 2024 13:17:23 +0100
Organization: A little, after lunch
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On 30/09/2024 06:46, Charlie Gibbs wrote:
> On 2024-09-29, Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
> 
>> On Sun, 29 Sep 2024 04:26:08 GMT, Charlie Gibbs wrote:
>>
>>> That's assuming your machine has a stack, which the IBM 360 didn't.
>>
>> Presumably there was a software-defined stack in the ABI. Otherwise how
>> would a language like PL/I handle recursion?
> 
> The subroutine calling convention required the calling program
> to pass a pointer to a register save area.  A recursive routine
> would have to allocate a save area in each instance (and, of
> course, free it before exiting).  If they wanted local variables,
> they'd have to allocate and free them as well.
> 
Exactly . At the end of the day., someone looked at how code was 
developing and said 'y'know, all this would be a piece of piss if we 
invented a STACK'

No need to explicitly allocate and free memory.
I think it was ALGOL that first used a stack for all that - not sure.

-- 
    "Fanaticism consists in redoubling your effort when you have 
forgotten your aim."

  George Santayana