How to force gcc to blackhole registers so that things maybe garbage collected?

[Andrew Haley]

On 5/22/19 8:54 PM, Alexander Monakov wrote:
> 
> On Wed, 22 May 2019, Hamad Ahmed wrote:
> 
>>  As an example,
>> the C standard disallows casting a pointer to an int,
>> doing operations on the int, and then casting back to a pointer.
> 
> Not true; if the int is sufficiently wide so that pointer representation
> is not truncated, if after your operations you got back the same int, you're
> guaranteed that casting back to a pointer results in the original pointer.

Not exactly. You're guaranteed that it will compare equal to the original
pointer, but that's not necessarily the same thing.

http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2090.htm

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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