https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110073
--- Comment #1 from David Faust <david.faust at oracle dot com> --- Created attachment 55234 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55234&action=edit alternate proposed patch Thank you for catching this, and for the fix! With the proposed patch on linux x86_64 I see the following: ../../../gcc/gcc/btfout.cc: In function ‘void btf_asm_func_type(ctf_container_ref, ctf_dtdef_ref, size_t)’: ../../../gcc/gcc/btfout.cc:952:31: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 4 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=] 952 | "TYPE %u BTF_KIND_FUNC '%s'", | ~^ | | | unsigned int | %lu 953 | num_types_added + num_vars_added + 1 + i, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | size_t {aka long unsigned int} I believe %zu instead of %u should work. Alternatively, a small refactor to the offending code makes it behave in line with the other functions (to properly use a ctf_id_t, and then PRIu64 as in your patch). But I haven't verified this on solaris/x86 yet.
