File: mixed-constraints.cpp

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb11u2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,634,820 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (18 lines) | stat: -rw-r--r-- 977 bytes parent folder | download | duplicates (21) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
// RUN:  %clang_cc1 -std=c++2a -verify %s

template<typename T> requires (sizeof(T) >= 4 && sizeof(T) <= 10)
// expected-note@-1{{because 'sizeof(char[20]) <= 10' (20 <= 10) evaluated to false}}
// expected-note@-2{{because 'sizeof(char) >= 4' (1 >= 4) evaluated to false}}
void foo() requires (sizeof(T) <= 8) {}
// expected-note@-1{{candidate template ignored: constraints not satisfied [with T = char]}}
// expected-note@-2{{candidate template ignored: constraints not satisfied [with T = char[9]]}}
// expected-note@-3{{candidate template ignored: constraints not satisfied [with T = char[20]]}}
// expected-note@-4{{because 'sizeof(char[9]) <= 8' (9 <= 8) evaluated to false}}

void bar() {
  foo<char>(); // expected-error{{no matching function for call to 'foo'}}
  foo<int>();
  foo<unsigned long long int>();
  foo<char[9]>(); // expected-error{{no matching function for call to 'foo'}}
  foo<char[20]>(); // expected-error{{no matching function for call to 'foo'}}
}