This uses the superb Inline, and specifically the use Inline with =>... feature, to show the size of C data structures. The sample shown is from PDL.

perl -Mblib -MInline=with,PDL -MInline=C,'size_t f() { return sizeof(struct pdl); }' -E 'say f()'

In reply to One-liner to show C struct sizes using Inline by etj

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