On March 14, 2021 6:55:32 AM GMT+01:00, Paul Edwards via Gcc
wrote:
>If I have code like this:
>
>char foo(char *p)
>{
>return (p[-1]);
>}
>
>It generates a negative index, like this:
>
>* Function foo code
> L 2,=F'-1'
> L 3,0(11)
> SLR 15,15
> IC
Hi Richard. Thanks for your reply, but if I understand
you correctly, you are saying this fix is for situations
where the size of an integer is different from the size
of a pointer?
That is not my issue. The size is the same. Absolutely
everything is 32-bits in the program (long, int, char *,
voi
Basically the rule (which can be configurable if
different machines behave differently) should be
(for pure 32-bit code generation):
1. If your machine treats indexes as signed values:
a) If the requested index is between -2 GiB and
+ 2 GiB, fine, do it.
b) If the requested index is greater th
On March 14, 2021 9:12:01 AM GMT+01:00, Paul Edwards
wrote:
>Hi Richard. Thanks for your reply, but if I understand
>you correctly, you are saying this fix is for situations
>where the size of an integer is different from the size
>of a pointer?
>
>That is not my issue. The size is the same. Abso
Snapshot gcc-11-20210314 is now available on
https://gcc.gnu.org/pub/gcc/snapshots/11-20210314/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 11 git branch
with the following options: git://gcc.gnu.org/git/gcc.git branch
