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| From: | Paul Eggert |
| Subject: | Re: [PATCH] Update portability doc for CHERI, C23 |
| Date: | Fri, 1 Dec 2023 22:31:00 -0800 |
| User-agent: | Mozilla Thunderbird |
On 2023-12-01 22:12, Bruno Haible wrote:
Which integer types on CHERI have "holes"?
intptr_t and uintptr_t, since they consume 128 bits of storage but have only 64 bits of integer value payload. Because of the holes, for example, intprops.h's TYPE_MAXIMUM doesn't work on CHERI-BSD for those two types. (I think I could work around this particular bug but it's likely not worth the effort as people should just use INTPTR_MAX and UINTPTR_MAX instead.)
Arguably the 129th bit of each intptr_t/uintptr_t is also a "hole". However, this extra bit doesn't cause a problem with intprops.h etc. as far as I can see.
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