Increase ungetc test coverage, guarantee single char pushback (RHEL-46738)

Make getenv thread-safe in more cases (RHEL-67692)

Use UsrMove path destination in the RPM files (RHEL-65334)

add GB18030-2022 charmap and tests (RHEL-56032)

Document struct link_map and interaction with dlinfo (RHEL-47467)

iconv: Support in-place conversions (RHEL-1915)

Add printf function family tests (RHEL-46725)

Add error and FUSE based tests for fchmod (RHEL-50548)

Add more tests for freopen (RHEL-46736)

Add more tests of getline (RHEL-54413)

Add fclose testcases (RHEL-46733)

Fix memory leak after fdopen seek failure (RHEL-66253)

Document rules for mixing stdio streams and file descriptors (RHEL-46724)

Support clearing options in /etc/resolv.conf, RES_OPTIONS with a - prefix
Introduce the strict-error/RES_STRICTERR stub resolver option (RHEL-50662)

Test Implementation to verify mkstemp behavior,
50545)

strtod: Fix subnormal rounding; do not set errno upon overflowing payload;
46739)