Re: Bug#871514: clamav: FTBFS on mips64el
control: reassign -1 gcc-7 7.1.0-12
control: affects -1 clamav
On 2017-08-09 16:43:29 [+0200], Aurelien Jarno wrote:
> I got a quick look. It's indeed a regression introduced by GCC 7. It can
> be workarounded by building the file with -O0, but already appears with
> -O1 optimization.
> I got a quick look with gdb and it seems that loading either the rc
> (enum) or infect (bool variable to test it against 0, the load is done
> with the ld instruction instead of the lw instruction. It means garbage
> from another local variable is loaded into the high 32 bits, which
> causes the comparison against 0 to be false instead of true.
Thanks for looking at this. I reassinged this bug to gcc-7. Would
forwarding the bug gcc upstream with the mbox.i be any help? I could a
label around the check so the comparison could be located in .S easier,
just don't know if this helps.