4.4.5. Debugging data and the --[no]_inline keyword
Inlined functions can appear in multiple places in compiled code. Therefore, it is quite complex to provide full debug information for inline functions.
In practice, it is useful to avoid generating debug information for inline functions.You can enable or disable the inlining of functions using the --[no_]inline command-line option. See ‑‑[no_]inline in the Compiler Reference Guide for more information.