@bshanks this is producing a compiler warning here: ``` gcc -m32 -c -o dlls/ntdll/unix/loader.o dlls/ntdll/unix/loader.c -Idlls/ntdll -Iinclude -D__WINESRC__ -DWINE_NO_LONG_TYPES \ -D_NTSYSTEM_ -D_ACRTIMP= -DWINBASEAPI= -D_MSVCR_VER=0 -DBINDIR="/usr/local/bin" \ -DSYSTEMDLLPATH="" -DDLL_TO_BINDIR="`tools/makedep -R /usr/local/lib/wine /usr/local/bin`" \ -DBIN_TO_DATADIR="`tools/makedep -R /usr/local/bin /usr/local/share/wine`" -DWINE_UNIX_LIB -Wall -pipe \ -fno-stack-protector -fno-strict-aliasing -Wdeclaration-after-statement -Wempty-body \ -Wignored-qualifiers -Winit-self -Wno-pragma-pack -Wstrict-prototypes -Wtype-limits -Wvla \ -Wwrite-strings -Wpointer-arith -gdwarf-4 -fno-omit-frame-pointer -fPIC \ -fasynchronous-unwind-tables -O2 -g -Wno-deprecated-declarations -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0 dlls/ntdll/unix/loader.c:2339:9: warning: address of function 'pthread_attr_set_qos_class_np' will always evaluate to 'true' [-Wpointer-bool-conversion] if (pthread_attr_set_qos_class_np) ~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ dlls/ntdll/unix/loader.c:2339:9: note: prefix with the address-of operator to silence this warning if (pthread_attr_set_qos_class_np) ^ & 1 warning generated. ``` Why do we need the test?