forked from OSchip/llvm-project
48 lines
2.4 KiB
C++
48 lines
2.4 KiB
C++
// RUN: %clang_cc1 -Wparentheses -fsyntax-only -verify %s
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// RUN: %clang_cc1 -Wparentheses -fixit %s -o - | %clang_cc1 -Wparentheses -Werror -
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bool someConditionFunc();
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void conditional_op(int x, int y, bool b) {
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(void)(x + someConditionFunc() ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '+'}} \
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// expected-note {{place parentheses around the '?:' expression to evaluate it first}} \
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// expected-note {{place parentheses around the '+' expression to silence this warning}}
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(void)(x - b ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '-'}} \
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// expected-note {{place parentheses around the '?:' expression to evaluate it first}} \
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// expected-note {{place parentheses around the '-' expression to silence this warning}}
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(void)(x * (x == y) ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '*'}} \
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// expected-note {{place parentheses around the '?:' expression to evaluate it first}} \
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// expected-note {{place parentheses around the '*' expression to silence this warning}}
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}
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class Stream {
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public:
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operator int();
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Stream &operator<<(int);
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Stream &operator<<(const char*);
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};
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void f(Stream& s, bool b) {
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(void)(s << b ? "foo" : "bar"); // expected-warning {{operator '?:' has lower precedence than '<<'}} \
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// expected-note {{place parentheses around the '?:' expression to evaluate it first}} \
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// expected-note {{place parentheses around the '<<' expression to silence this warning}}
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}
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struct S {
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operator int() { return 42; }
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friend S operator+(const S &lhs, bool) { return S(); }
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};
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void test(S *s, bool (S::*m_ptr)()) {
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(void)(*s + true ? "foo" : "bar"); // expected-warning {{operator '?:' has lower precedence than '+'}} \
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// expected-note {{place parentheses around the '?:' expression to evaluate it first}} \
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// expected-note {{place parentheses around the '+' expression to silence this warning}}
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(void)((*s + true) ? "foo" : "bar"); // No warning.
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// Don't crash on unusual member call expressions.
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(void)((s->*m_ptr)() ? "foo" : "bar");
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}
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