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Comment by iExploder | Hacker News Reader

> No prob with size_t and char* I think. They'll nicely solidify to 4 bytes on 32-bit platforms. I'd need to test for maximum though in size_t .len case.

I mean on 32 bit platform the offset to union tag would be different depending on the struct the union holds, unless I'm missing something

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The hard values in the readme may be confusing. The real model is

  union {
      struct {
          char*   data;
          size_t  len;
          size_t  off:8*sizeof(size_t)-TAGBITS, tag:TAGBITS;
      } ptr;
  
      struct {
          char    data[sizeof(BuffetPtr)-2];
          uint8_t refcnt;
          uint8_t len:8-TAGBITS, tag:TAGBITS;
      } sso;
  }

where the tag falls into place. I tried an older version on 32 bit and it worked ok.

ahhh thanks, now that makes more sense to me

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