1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s -fms-extensions
2 // RUN: %clang_cc1 -triple i386-unknown-unknown -fsyntax-only -verify %s -fms-extensions
3
f(void)4 void f(void) {
5 (void)_byteswap_ushort(42); // expected-error{{call to undeclared library function '_byteswap_ushort'}} \
6 // expected-note{{include the header <stdlib.h> or explicitly provide a declaration for '_byteswap_ushort'}}
7 (void)_byteswap_uint64(42LL); // expected-error{{call to undeclared library function '_byteswap_uint64'}} \
8 // expected-note{{include the header <stdlib.h> or explicitly provide a declaration for '_byteswap_uint64'}}
9 }
10
11 void _byteswap_ulong(void); // expected-warning{{incompatible redeclaration of library function '_byteswap_ulong'}} \
12 // expected-note{{'_byteswap_ulong' is a builtin}}
13
14 unsigned short _byteswap_ushort(unsigned short);
15 unsigned long long _byteswap_uint64(unsigned long long);
16
g(void)17 void g(void) {
18 (void)_byteswap_ushort(42);
19 (void)_byteswap_uint64(42LL);
20 }
21
22 #if defined(__x86_64__)
h(void)23 void h(void) {
24 (void)__mulh(21, 2); // expected-error{{call to undeclared library function '__mulh'}} \
25 // expected-note{{include the header <intrin.h> or explicitly provide a declaration for '__mulh'}}
26 (void)__umulh(21, 2); // expected-error{{call to undeclared library function '__umulh'}} \
27 // expected-note{{include the header <intrin.h> or explicitly provide a declaration for '__umulh'}}
28 }
29
30 long long __mulh(long long, long long);
31 unsigned long long __umulh(unsigned long long, unsigned long long);
32
i(void)33 void i(void) {
34 (void)__mulh(21, 2);
35 (void)__umulh(21, 2);
36 }
37 #endif
38
39 #if defined(i386)
h(void)40 void h(void) {
41 (void)__mulh(21LL, 2LL); // expected-error{{call to undeclared function '__mulh'; ISO C99 and later do not support implicit function declarations}}
42 (void)__umulh(21ULL, 2ULL); // expected-error{{call to undeclared function '__umulh'; ISO C99 and later do not support implicit function declarations}}
43 }
44 #endif
45