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Hi there,

Today I downloaded the [mpich-announce] MPICH 5.0.0 released
on a x86_64-pc-linux-gnu Linux machine with Fedora 43.

Although the building is fine, the following warning appears during compilation:

../src/mpid/ch4/src/ch4_proc.c: In function ‘MPIDIU_upidhash_add’:

../src/mpid/ch4/src/ch4_proc.c:336:5: warning: ‘memcpy’ specified bound between 18446744071562067968 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]

336 | memcpy(t->upid, upid, upid_len);

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I'd like to know if it can be ignored, or if it would be better to fix it (and
how to do so). Thanks,

Regards.

Jorge D'Elia.