[Bug target/125409] New: [avr] Missing fixed-point conversions from / to [u]int24_t

[gjl at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125409

            Bug ID: 125409
           Summary: [avr] Missing fixed-point conversions from / to
                    [u]int24_t
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gjl at gcc dot gnu.org
  Target Milestone: ---

avr-gcc is lacking fixed-point conversions from / to [u]int24_t, like:

__uint24 fun_k (_Accum a)
{
    return a;
}

_Accum k_fun (__uint24 a)
{
    return a;
}

$ avr-gcc -mmcu=atmega128 x.c

ld: x.c:(.text+0x1c): undefined reference to `__fractunssapsi'
ld: x.c:(.text+0x4e): undefined reference to `__fractunspsisa'