after locally unpacking the content of glibc-2.32-3.fc33.aarch64.rpm and its debug info package glibc-debuginfo-2.32-3.fc33.aarch64.rpm, I am getting a self comparison error as: dodji@paname:rpm-extract$ abidw -d usr/lib/debug --abidiff lib64/libc-2.32.so Functions changes summary: 0 Removed, 1 Changed, 0 Added function Variables changes summary: 0 Removed, 0 Changed, 0 Added variable 1 function with some indirect sub-type change: [C] 'function int __glob_lstat_compat(const char*, int, int (const char*, int)*, glob_t*)' at glob.c:287:1 has some indirect sub-type changes: Please note that the symbol of this function is glob64@GLIBC_2.17 and it aliases symbol: glob@GLIBC_2.17 linkage names of function int __glob_lstat_compat(const char*, int, int (const char*, int)*, glob_t*) changed from 'glob64@GLIBC_2.17, glob@GLIBC_2.17' to 'glob64@@GLIBC_2.27, glob@@GLIBC_2.27' size of symbol changed from 4984 to 0, its version changed from GLIBC_2.17 to GLIBC_2.27
This issue should now be fixed by the commit https://sourceware.org/git/?p=libabigail.git;a=commit;h=1dcdd54d5494f25509e48c92409d9fc321733ba0 in the master branch of the repository. The fix should be available in the comming 2.0 version of libabigail.