Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/warn/pr36921.C @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
children |
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/* PR 36921: comparison operator can be overloaded. Do not emit warnings in such case. { dg-do compile } { dg-options "-Wparentheses" } */ struct A {}; A operator<(A, A) { return A(); } A operator>(A, A) { return A(); } A operator<=(A, A) { return A(); } A operator>=(A, A) { return A(); } A operator==(A, A) { return A(); } A operator!=(A, A) { return A(); } int main() { A() < A() < A(); // should not emit warning 1 < 2 < 3; // { dg-warning "mathematical meaning" "parentheses" } A() > A() > A(); // should not emit warning 1 > 2 > 3; // { dg-warning "mathematical meaning" "parentheses" } A() <= A() <= A(); // should not emit warning 1 <= 2 <= 3; // { dg-warning "mathematical meaning" "parentheses" } A() >= A() >= A(); // should not emit warning 1 >= 2 >= 3; // { dg-warning "mathematical meaning" "parentheses" } A() == A() < A (); // { dg-warning "suggest parentheses" "parentheses" } A() < A() != A (); // { dg-warning "suggest parentheses" "parentheses" } return 0; }