33 lines · c
1// RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -o - %s -disable-llvm-optzns | FileCheck %s2 3// CHECK: call i32 @"\01_asm_func_name.inline"4 5// CHECK: declare dso_local i32 @"\01_asm_func_name"(ptr noundef, i32 noundef, ptr noundef, ptr noundef)6 7// CHECK: define internal i32 @"\01_asm_func_name.inline"8 9// CHECK: call i32 @__mingw_vsnprintf10 11// CHECK: declare dso_local i32 @__mingw_vsnprintf12 13typedef unsigned int size_t;14 15int __mingw_vsnprintf(char *_DstBuf, size_t _MaxCount, const char *_Format, __builtin_va_list _ArgList);16 17// For the real use case, "_asm_func_name" is actually "___mingw_vsnprintf", but it's renamed in the testcase for disambiguation.18int vsnprintf(char *__stream, size_t __n, const char *__format, __builtin_va_list __local_argv) __asm__("_asm_func_name");19 20extern __inline__ __attribute__((__always_inline__, __gnu_inline__))21int vsnprintf(char *__stream, size_t __n, const char *__format, __builtin_va_list __local_argv)22{23 return __mingw_vsnprintf(__stream, __n, __format, __local_argv);24}25 26void call(const char* fmt, ...) {27 char buf[200];28 __builtin_va_list ap;29 __builtin_va_start(ap, fmt);30 vsnprintf(buf, sizeof(buf), fmt, ap);31 __builtin_va_end(ap);32}33