On Sat, 7 Nov 2009, Atsushi Nemoto wrote: > Recently COMMAND_LINE_SIZE (CL_SIZE) was extended to 4096 from 512. > (commit 22242681 "MIPS: Extend COMMAND_LINE_SIZE") > > This cause warning if something like buf[CL_SIZE] was declared as a > local variable, for example in prom_init_cmdline() on some platforms. > > And since many Makefiles in arch/mips enables -Werror, this cause > build failure. > > How can we avoid this error? > > - do not use local array? (but dynamic allocation cannot be used in > such an early stage. static array?) > - are there any way to disable -Wframe-larger-than for the file or function? > - make COMMAND_LINE_SIZE customizable? > - use non default CONFIG_FRAME_WARN? > > Any comments or suggestions? Use static storage and mark it initdata? You can certainly override -Wframe-larger-than in per-object CFLAGS too. You might also be able to use __builtin_alloca(), but this sounds like a shaky ground. ;) Maciej
