llvm-project/clang/test/Sema/format-strings-bitfield-pro...

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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s
// RUN: %clang_cc1 -triple x86_64-unknown-windows-msvc -fsyntax-only -verify %s
// In C++, the bitfield promotion from long to int does not occur, unlike C.
// expected-no-diagnostics
int printf(const char *restrict, ...);
struct bitfields {
long a : 2;
unsigned long b : 2;
long c : 32; // assumes that int is 32 bits
unsigned long d : 32; // assumes that int is 32 bits
} bf;
void bitfield_promotion() {
printf("%ld", bf.a);
printf("%lu", bf.b);
printf("%ld", bf.c);
printf("%lu", bf.d);
}