Re: [Crash-utility] [PATCH 2/4] Fix gcc-11 compilation warning on symbols.c

On 2022/07/26 15:52, lijiang wrote:>>>> Without the patch, the following gcc-11 compliation warning is emitted >>>> for symbols.c: >>>> >>>> symbols.c: In function 'cmd_p': >>>> symbols.c:7412:38: warning: writing 1 byte into a region of size 0 >>>> [-Wstringop-overflow=] >>>> 7412 | *(cpuspec-1) = ':'; >>>> | ~~~~~~~~~~~~~^~~~~ >>>> >>> >>> >>> I have one question about it: >>> This issue only appears in gcc-11 and earlier, I tested it with gcc-12, >> but >>> it disappeared. It's interesting. >> I think that the warning is a false detection. This patch has no behavior >> change, just a cosmetic change to avoid the warning. I'm not sure, but it >> might be a gcc bug and fixed in gcc-12. >> > > Probably. Let's leave it there, if it still appears in the future, we can > pick it up. Any thoughts? um, I see the warning on RHEL9, what is your concern about fixing this?

with the small cosmetic change, not harmful.

The other three patches look good to me: Ack. > [PATCH 1/4] Fix gcc-11 compilation warnings on filesys.c > [PATCH 3/4] Fix gcc-11 compilation warning on makedumpfile.c > [PATCH 4/4] Fix gcc-11 compilation warning on kvmdump.c Thanks! Kazu