Right, using the latest git. I checked the latest releases and fio-3.5 does not have the warning, but fio-3.6 introduces it. I was using gcc version 4.8.3 20140911. I moved to gcc version 4.8.5 20150623 on another kernel and I don't see the issue. Odd how the warning only happens with in between compiler versions and latest fio source. Regards, Jeff -----Original Message----- From: Sitsofe Wheeler [mailto:sitsofe@xxxxxxxxx] Sent: Friday, June 15, 2018 2:45 PM To: Jeff Furlong <jeff.furlong@xxxxxxx> Cc: fio@xxxxxxxxxxxxxxx Subject: Re: fio make warning Hmm, On 15 June 2018 at 18:53, Jeff Furlong <jeff.furlong@xxxxxxx> wrote: > On some kernels, I am getting a make warning: > > CC init.o > init.c: In function td_fill_rand_seeds: > init.c:1049:18: warning: array subscript is above array bounds [-Warray-bounds] > td->rand_seeds[i] = FIO_RANDSEED * td->thread_number > ^ > init.c:1049:18: warning: array subscript is above array bounds > [-Warray-bounds] > init.c:1049:18: warning: array subscript is above array bounds > [-Warray-bounds] > init.c:1049:18: warning: array subscript is above array bounds > [-Warray-bounds] Assuming latest fio (af84cd66149507424814cf9c0b4950f4cf66e3b7 ): >From fio.h 244: unsigned long rand_seeds[FIO_RAND_NR_OFFS]; init.c 1048: for (i = 0; i < FIO_RAND_NR_OFFS; i++) So the array is from 0 - (FIO_RAND_NR_OFFS - 1) and i should going from 0 - (FIO_RAND_NR_OFFS - 1). Not sure I understand the issue... Which compiler were you using and what version was it? -- Sitsofe | http://sucs.org/~sits/ ��.n��������+%������w��{.n�������^n�r������&��z�ޗ�zf���h���~����������_��+v���)ߣ�
