1*1b4c0cb3SLouis Dionne //===----------------------------------------------------------------------===// 2*1b4c0cb3SLouis Dionne // 3*1b4c0cb3SLouis Dionne // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*1b4c0cb3SLouis Dionne // See https://llvm.org/LICENSE.txt for license information. 5*1b4c0cb3SLouis Dionne // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*1b4c0cb3SLouis Dionne // 7*1b4c0cb3SLouis Dionne //===----------------------------------------------------------------------===// 8*1b4c0cb3SLouis Dionne 9*1b4c0cb3SLouis Dionne #include <cmath> 10*1b4c0cb3SLouis Dionne f()11*1b4c0cb3SLouis Dionnevoid f() { 12*1b4c0cb3SLouis Dionne unsigned int ui = -5; 13*1b4c0cb3SLouis Dionne (void)std::abs(ui); // expected-error {{call to 'abs' is ambiguous}} 14*1b4c0cb3SLouis Dionne 15*1b4c0cb3SLouis Dionne unsigned char uc = -5; 16*1b4c0cb3SLouis Dionne (void)std::abs(uc); // expected-warning {{taking the absolute value of unsigned type 'unsigned char' has no effect}} 17*1b4c0cb3SLouis Dionne 18*1b4c0cb3SLouis Dionne unsigned short us = -5; 19*1b4c0cb3SLouis Dionne (void)std::abs(us); // expected-warning {{taking the absolute value of unsigned type 'unsigned short' has no effect}} 20*1b4c0cb3SLouis Dionne 21*1b4c0cb3SLouis Dionne unsigned long ul = -5; 22*1b4c0cb3SLouis Dionne (void)std::abs(ul); // expected-error {{call to 'abs' is ambiguous}} 23*1b4c0cb3SLouis Dionne 24*1b4c0cb3SLouis Dionne unsigned long long ull = -5; 25*1b4c0cb3SLouis Dionne (void)std::abs(ull); // expected-error {{call to 'abs' is ambiguous}} 26*1b4c0cb3SLouis Dionne } 27