Undefined Symbol --res-maybe-init Version Glibc-private May 2026

But for a , use a direct linker undefined reference :

int main() { __res_maybe_init(); // now expects GLIBC_PRIVATE version return 0; } undefined symbol --res-maybe-init version glibc-private

gcc -c provoke_glibc_private_undef.c gcc -o test provoke_glibc_private_undef.o If linking succeeds (due to weak alias tricks), force by making LD_BIND_NOW=1 ./test . But for a , use a direct linker

undefined symbol: __res_maybe_init@GLIBC_PRIVATE This is not a real-world fix — it’s a reproduction of the error. The actual fix for such an error (if encountered in real code) is to avoid relying on glibc private symbols and link against the correct public resolver API (e.g., res_ninit , __res_init with appropriate feature test macros). But for a