1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s 2 // RUN: %clang_cc1 -triple x86_64-unknown-windows-msvc -fsyntax-only -verify %s 3 4 int printf(const char *restrict, ...); 5 6 struct bitfields { 7 long a : 2; 8 unsigned long b : 2; 9 long c : 32; // assumes that int is 32 bits 10 unsigned long d : 32; // assumes that int is 32 bits 11 } bf; 12 13 void bitfield_promotion() { 14 printf("%ld", bf.a); // expected-warning {{format specifies type 'long' but the argument has type 'int'}} 15 printf("%lu", bf.b); // expected-warning {{format specifies type 'unsigned long' but the argument has type 'int'}} 16 printf("%ld", bf.c); // expected-warning {{format specifies type 'long' but the argument has type 'int'}} 17 printf("%lu", bf.d); // expected-warning {{format specifies type 'unsigned long' but the argument has type 'unsigned int'}} 18 } 19