Hi gcc, I tried downloading gcc-11.2.0-tar.gz from Japan server <https://ftp.tsukuba.wide.ad.jp/software/gcc/>. It did not match the checksum SHA512. I found the link from this gcc page <https://gcc.gnu.org/mirrors.html>.
I tried downloading from the Japan server a second time. Besides not matching the checksum, the file size was different from the first download, i.e. comparing the two files using command prompt says that they do not match because the file sizes were different. I downloaded it from the UK server <https://mirrorservice.org/sites/sourceware.org/pub/gcc/> and it did match the checksum. Note: The size of the file downloaded from the Japan server was both times smaller than 136 MB which is the size of the file downloaded from the UK server. Thank you. Sagar.
