On Tue, 7 May 2024 14:35:34 +0800 Tao Su <tao1.su@xxxxxxxxxxxxxxx> wrote: > asprintf() is declared in stdio.h when defining _GNU_SOURCE, but stdio.h > is so common that many files don’t define _GNU_SOURCE before including > stdio.h, and defining _GNU_SOURCE after including stdio.h will no longer > take effect. > > Since kselftest_harness.h introduces asprintf(), it is necessary to add > _GNU_SOURCE definition in all selftests including kselftest_harness.h, > otherwise, there will be warnings or even errors during compilation. > There are already many selftests that define _GNU_SOURCE or put the > include of kselftest_harness.h at the very beginning of the .c file, just > add the _GNU_SOURCE definition in the tests that have compilation warnings. That asprintf() continues to cause problems. How about we just remove it? Do the malloc(snprintf(str, 0, ...)) separately?
