Symbol: writable
src/libs/stdc++/legacy/streambuf.cc
337
int ios::writable() { return !(rdbuf()->_flags & _IO_NO_WRITES); }
src/system/libnetwork/netresolv/isc/ev_streams.c
270
writable(evContext opaqueCtx, void *uap, int fd, int evmask) {