On Mon, Jun 08, 2020 at 03:49:17PM +0200, Tobias Burnus wrote:
> Hi,
>
> I just observe that this patch causes our *nonbootstrap* builds
> to fail; I have not yet looked into this nor tried a bootstrap
> build.
>
> gcc-mainline/gcc/expr.c: In function 'rtx_insn* emit_move_insn(rtx, rtx)':
> gcc-mainline/gcc/expr.c:3830:3: warning: 'auto' changes meaning in C++11;
> please remove it [-Wc++0x-compat]
> auto candidate_subreg_p = [&](rtx subreg) {
> ^
That means you must be compiling with -std=gnu++98 rather than -std=gnu++11.
Current trunk requires C++11.
Make sure this is done in a clean tree, or ./config.status --recheck;
./config.status
has been done?
Jakub
