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	Sat, 06 Mar 2021 00:29:10 -0800 (PST)
Subject:	Re: stack grow direction wrongly detected
To:	cygwin AT cygwin DOT com
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	<20210305233104 DOT 782838da83161a90f56a5369 AT nifty DOT ne DOT jp>
	<YEJDjnDYbV7RXsqw AT xps13>
Message-ID:	<6dd2f48b-89d6-ce58-c8c1-bb8a351128c2@gmail.com>
Date:	Sat, 6 Mar 2021 09:29:09 +0100
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From:	Marco Atzeri via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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On 05.03.2021 15:43, gs-cygwin DOT com AT gluelogic DOT com wrote:
> On Fri, Mar 05, 2021 at 11:31:04PM +0900, Takashi Yano via Cygwin wrote:
>> On Fri, 5 Mar 2021 13:18:38 +0100
>> Marco Atzeri wrote:
>>> Hi Guys,
>>> noted trying to rebuild guile 1.8.8.
>>>
>>> The following piece of code in the past
>>> was setting SCM_I_GSC_STACK_GROWS_UP=0
>>> and now produces SCM_I_GSC_STACK_GROWS_UP=1
>>>
>>> I assume some change in the gcc compiler is causing the issue.
>>> I presume most of the programs and libraries do not care,
>>> but some special one like guile crashes during build for this issue,
>>> so be aware.
>>>
>>> Regards
>>> Marco
>>>

> 
> If the compiler is gcc or clang:
> 
> __attribute__(__noinline__)

thanks Glenn,

as
__attribute__((__noinline__))

it seems to work
for all variant of -Ox

> int
> find_stack_direction ()
> {
> ...
> }
> 
> Cheers, Glenn

Regards
Marco

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