callee-no-bodyThe callee has no body to inline

Reported by --explain after a verdict.

mettle explain callee-no-body

The function is declared but not defined in this program: an extern, or a runtime entry point. There is nothing to copy into the caller.

This is not a problem. A call to a C function or an OS API is a call.

Related

• callee-noinlineThe callee is marked @noinline
• callee-denylistedThe callee is on the compiler's inline denylist
• too-many-parametersThe callee takes more than 16 parameters
• callee-parameter-namesThe callee's parameter names are unavailable
• callee-over-budgetThe callee's body is over the inline size budget
• callee-call-countThe callee makes more calls than the inline call-count budget allows
• callee-inline-asmThe callee contains inline assembly
• callee-has-loopThe callee's loop body is over the inline size budget