On 2026-07-27 09:01:09+0700, Ammar Faizi wrote: > On 7/27/26 8:32 AM, Ammar Faizi wrote: > > On 7/27/26 3:00 AM, Thomas Weißschuh wrote: > > > We have _NOLIBC_OPTIMIZER_HIDE_VAR() for this. > > > > Oh, I missed it. > > > > > Maybe it can be made variadic. > > Oh wait, tools/testing/selftests/nolibc/nolibc-test.c is compiled > twice. One for libc, one for nolibc. The test cannot use > _NOLIBC_OPTIMIZER_HIDE_VAR(), it breaks libc:
Good point. > ``` > $ make -f Makefile.nolibc run-libc-test > nolibc-test.c: In function ‘test_abs_range’: > nolibc-test.c:1756:9: error: implicit declaration of function > ‘_NOLIBC_OPTIMIZER_HIDE_VAR’ [-Wimplicit-function-declaration] > 1756 | _NOLIBC_OPTIMIZER_HIDE_VAR(ll, l, i); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > make: *** [Makefile.nolibc:278: libc-test] Error 1 > ``` > > What approach do you prefer? Do we need to hide the variables for a regular libc? If not, we can have a dummy definition of _NOLIBC_OPTIMIZER_HIDE_VAR(). Thomas
