1*e842a474SRichard Smith #include "a.h" 2*e842a474SRichard Smith 3*e842a474SRichard Smith #if !__building_module(b) 4*e842a474SRichard Smith #error "should only get here when building module b" 5*e842a474SRichard Smith #endif 6*e842a474SRichard Smith 7*e842a474SRichard Smith const int b = 2; 8