clang/test/SemaCXX/attr-format-Float16.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -triple i686-linux-pc -target-feature +sse2 %s
   2 // RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-linux-pc %s
   3 // RUN: %clang_cc1 -fsyntax-only -verify -triple spir-unknown-unknown %s
   4 // RUN: %clang_cc1 -fsyntax-only -verify -triple armv7a-linux-gnu %s
   5 // RUN: %clang_cc1 -fsyntax-only -verify -triple aarch64-linux-gnu %s
   6 // RUN: %clang_cc1 -fsyntax-only -verify -triple riscv32 %s
   7 // RUN: %clang_cc1 -fsyntax-only -verify -triple riscv64 %s
   8
   9 template <typename... Args>
  10 __attribute__((format(printf, 1, 2)))
  11 void format(const char *fmt, Args &&...args); // expected-warning{{GCC requires a function with the 'format' attribute to be variadic}}
  12
  13 template<typename... Args>
  14 __attribute__((format(scanf, 1, 2)))
  15 int scan(const char *fmt, Args &&...args); // expected-warning{{GCC requires a function with the 'format' attribute to be variadic}}
  16
  17 void do_format() {
  18   format("%f", (_Float16)123.f); // expected-warning{{format specifies type 'double' but the argument has type '_Float16'}}
  19
  20   _Float16 Float16;
  21   scan("%f", &Float16); // expected-warning{{format specifies type 'float *' but the argument has type '_Float16 *'}}
  22   scan("%lf", &Float16); // expected-warning{{format specifies type 'double *' but the argument has type '_Float16 *'}}
  23   scan("%Lf", &Float16); // expected-warning{{format specifies type 'long double *' but the argument has type '_Float16 *'}}
  24 }