Viewing file:  Wparentheses-23.C (2.31 KB) -rw-r--r--
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// { dg-do compile }
// { dg-options "-Wparentheses" }
// Template version of Wparentheses-22.C.
int foo (int);
class C
{
public:
C()
: b(0)
{ }
// Use default assignment constructor.
// Provide conversion to bool so that an instance of this class will
// work as a condition.
operator bool() const
{ return b != 0; }
private:
int b;
};
C a, b, c;
bool d;
template<class T>
void
bar (T)
{
if (a = b) // { dg-warning "assignment" "correct warning" }
foo (0);
if ((a = b))
foo (1);
if (a = a) // { dg-warning "assignment" "correct warning" }
foo (2);
if ((a = a))
foo (3);
if (b = c) // { dg-warning "assignment" "correct warning" }
foo (4);
else
foo (5);
if ((b = c))
foo (6);
else
foo (7);
if (b = b) // { dg-warning "assignment" "correct warning" }
foo (8);
else
foo (9);
if ((b = b))
foo (10);
else
foo (11);
while (c = b) // { dg-warning "assignment" "correct warning" }
foo (12);
while ((c = b))
foo (13);
while (c = c) // { dg-warning "assignment" "correct warning" }
foo (14);
while ((c = c))
foo (15);
do foo (16); while (a = b); // { dg-warning "assignment" "correct warning" }
do foo (17); while ((a = b));
do foo (18); while (a = a); // { dg-warning "assignment" "correct warning" }
do foo (19); while ((a = a));
for (;c = b;) // { dg-warning "assignment" "correct warning" }
foo (20);
for (;(c = b);)
foo (21);
for (;c = c;) // { dg-warning "assignment" "correct warning" }
foo (22);
for (;(c = c);)
foo (23);
d = a = b; // { dg-warning "assignment" "correct warning" }
foo (24);
d = (a = b);
foo (25);
d = a = a; // { dg-warning "assignment" "correct warning" }
foo (26);
d = (a = a);
foo (27);
if (C(a))
foo (28);
}
template<class T>
bool
bar1 (T)
{
return a = b; // { dg-warning "assignment" "correct warning" }
}
template<class T>
bool
bar2 (T)
{
return (a = b);
}
template<class T>
bool
bar3 (T)
{
return a = a; // { dg-warning "assignment" "correct warning" }
}
template<class T>
bool
bar4 (T)
{
return (a = a);
}
template void bar<int> (int); // { dg-message "required" }
template bool bar1<int> (int); // { dg-message "required" }
template bool bar2<int> (int);
template bool bar3<int> (int); // { dg-message "required" }
template bool bar4<int> (int);
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