auto_diagnostic_group d;
error_at (loc, "modifying a const object %qE is not allowed in "
"a constant expression", TREE_OPERAND (expr, 0));
- inform (location_of (obj), "originally declared %<const%> here");
+
+ /* Find the underlying object that was declared as const. */
+ location_t decl_loc = UNKNOWN_LOCATION;
+ for (tree probe = obj; decl_loc == UNKNOWN_LOCATION; )
+ switch (TREE_CODE (probe))
+ {
+ case BIT_FIELD_REF:
+ case COMPONENT_REF:
+ {
+ tree elt = TREE_OPERAND (probe, 1);
+ if (CP_TYPE_CONST_P (TREE_TYPE (elt)))
+ decl_loc = DECL_SOURCE_LOCATION (elt);
+ probe = TREE_OPERAND (probe, 0);
+ }
+ break;
+
+ case ARRAY_REF:
+ case REALPART_EXPR:
+ case IMAGPART_EXPR:
+ probe = TREE_OPERAND (probe, 0);
+ break;
+
+ default:
+ decl_loc = location_of (probe);
+ break;
+ }
+ inform (decl_loc, "originally declared %<const%> here");
}
/* Return true if FNDECL is a replaceable global allocation function that
return t;
}
+ /* Change the input location to the currently processed expression for
+ better error messages when a subexpression has no location. */
location_t loc = cp_expr_loc_or_input_loc (t);
+ iloc_sentinel sentinel (loc);
STRIP_ANY_LOCATION_WRAPPER (t);
// R() is well-formed because i is initialized before j.
struct s {
- constexpr s() : v(v) { }
+ constexpr s() : v(v) { } // { dg-error "accessing uninitialized member" }
int v;
};
-constexpr s bang; // { dg-error "|" }
+constexpr s bang; // { dg-message "in .constexpr. expansion" }
struct R {
int i,j;
// Ill-formed (no diagnostic required)
struct T {
int i;
- constexpr int f() { return i; }
+ constexpr int f() { return i; } // { dg-error "accessing uninitialized member" }
constexpr T(): i(0) { }
- constexpr T(const T& t) : i(f()) { } // { dg-message "" }
+ constexpr T(const T& t) : i(f()) { } // { dg-message "in .constexpr. expansion" }
};
constexpr T t1;
// Ill-formed (diagnostic required)
-constexpr T t2(t1); // { dg-message "" }
+constexpr T t2(t1); // { dg-message "in .constexpr. expansion" }
// Well-formed
struct U {
// PR c++/70323
// { dg-do compile { target c++11 } }
-constexpr int overflow_if_0 (int i) { return __INT_MAX__ + !i; }
-constexpr int overflow_if_1 (int i) { return __INT_MAX__ + i; }
+constexpr int overflow_if_0 (int i) { return __INT_MAX__ + !i; } // { dg-error "overflow in constant expression" }
+constexpr int overflow_if_1 (int i) { return __INT_MAX__ + i; } // { dg-error "overflow in constant expression" }
-constexpr bool i0_0 = overflow_if_0 (0); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr bool i0_0 = overflow_if_0 (0); // { dg-message "in .constexpr. expansion of " }
constexpr bool i0_1 = overflow_if_0 (1);
constexpr bool i1_0 = overflow_if_1 (0);
-constexpr bool i1_1 = overflow_if_1 (1); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr bool i1_1 = overflow_if_1 (1); // { dg-message "in .constexpr. expansion of " }
// { dg-do compile { target c++11 } }
// { dg-options "-Wall" }
-constexpr int overflow_if_0 (int i) { return __INT_MAX__ + !i; }
-constexpr int overflow_if_1 (int i) { return __INT_MAX__ + i; }
+constexpr int overflow_if_0 (int i) { return __INT_MAX__ + !i; } // { dg-error "overflow in constant expression" }
+constexpr int overflow_if_1 (int i) { return __INT_MAX__ + i; } // { dg-error "overflow in constant expression" }
-constexpr bool i0_0 = overflow_if_0 (0); // { dg-error "overflow in constant expression|in .constexpr. expansion of" }
+constexpr bool i0_0 = overflow_if_0 (0); // { dg-message "in .constexpr. expansion of" }
constexpr bool i0_1 = overflow_if_0 (1);
constexpr bool i1_0 = overflow_if_1 (0);
-constexpr bool i1_1 = overflow_if_1 (1); // { dg-error "overflow in constant expression|in .constexpr. expansion of" }
+constexpr bool i1_1 = overflow_if_1 (1); // { dg-message "in .constexpr. expansion of" }
constexpr int g(A* ap)
{
return f((delete[] ap, 42)); // { dg-message "" "" { target c++17_down } }
+ // { dg-error "" "" { target c++2a } .-1 }
}
A a;
-constexpr int i = g(&a); // { dg-error "" }
- // { dg-message "in 'constexpr' expansion of" "" { target c++2a } .-1 }
+constexpr int i = g(&a); // { dg-error "" "" { target c++17_down } }
+ // { dg-message "in 'constexpr' expansion of" "" { target c++2a } .-1 }
struct complex // { dg-message "no .constexpr. constructor" "" { target { ! implicit_constexpr } } }
{
complex(double r, double i) : re(r), im(i) { }
- constexpr double real() const { return re; } // { dg-error "not a literal type" "" { target c++11_only } }
+ constexpr double real() const { return re; } // { dg-error "not a literal type|not usable in a constant expression" "" { target { ! implicit_constexpr } } }
double imag() const { return im; }
private:
typedef bool (*Function)(int);
constexpr bool check(int x, Function p) { return p(x); } // { dg-message "in .constexpr. expansion of" }
+// { dg-error "not a constant expression" "" { target *-*-* } .-1 }
static_assert(check(2, check), ""); // { dg-error "conversion|constant|in .constexpr. expansion of" }
struct A { mutable int m; };
constexpr int f(A a) { return a.m; }
+// { dg-error "mutable" "" { target c++11_only } .-1 }
static_assert(f({42}) == 42, "");
-// { dg-error "non-constant|mutable" "" { target c++11_only } .-1 }
+// { dg-error "non-constant" "" { target c++11_only } .-1 }
// Test that we catch excessive recursion.
// { dg-do compile { target c++11 } }
// { dg-options "-fconstexpr-depth=5" }
-// { dg-prune-output "in constexpr expansion" }
-constexpr int f (int i) { return f (i-1); } // { dg-message "in .constexpr. expansion of " }
-constexpr int i = f(42); // { dg-error ".constexpr. evaluation depth|in .constexpr. expansion of " }
+// { dg-prune-output "in .constexpr. expansion" }
+constexpr int f (int i) { return f (i-1); } // { dg-error ".constexpr. evaluation depth" }
+constexpr int i = f(42);
struct Fib
{
static const long long value // { dg-error "overflow" }
- = Fib<i-1>::value + Fib<i-2>::value;
+ = Fib<i-1>::value + Fib<i-2>::value; // { dg-error "overflow" }
};
template <>
*c = reinterpret_cast<char *>(this) - reinterpret_cast<char *>(c); // { dg-error "reinterpret_cast" "" { target c++20_down } }
}
};
-struct C : A {
+struct C : A { // { dg-error "" "" { target c++14_down } }
B bar {this};
};
-constexpr C foo {}; // { dg-message "" }
+// error path changes in C++17 due to `C` becoming an aggregate
+constexpr C foo {}; // { dg-error "" "" { target c++17 } }
{
union U { long long a; int b[2]; } u { 5LL };
u.b[1] = 4; // { dg-error "change of the active member of a union from" "" { target c++17_down } }
- return u.b[0];
+ return u.b[0]; // { dg-error "accessing uninitialized array element" "" { target c++2a } }
}
constexpr int
static_assert (foo () == 0, ""); // { dg-error "non-constant condition for static assertion" }
// { dg-message "in 'constexpr' expansion of" "" { target *-*-* } .-1 }
- // { dg-error "accessing uninitialized array element" "" { target c++2a } .-2 }
static_assert (bar () == 4, ""); // { dg-error "non-constant condition for static assertion" "" { target c++17_down } }
// { dg-message "in 'constexpr' expansion of" "" { target c++17_down } .-1 }
struct A {
int r;
- const C c;
+ const C c; // { dg-message "originally declared" }
constexpr A() : r(11) { r = 14; const_cast<C &>(c).n = 42; } // { dg-error "modifying a const object" }
};
};
constexpr B b(false); // { dg-message "in .constexpr. expansion of" }
-// { dg-message "originally declared" "" { target *-*-* } .-1 }
static_assert(b.e.d.a.c.n == 2, ""); // { dg-error "non-constant condition" }
struct A {
constexpr int& operator[](int i) { return impl(elems, i); }
- const int elems[10];
+ const int elems[10]; // { dg-message "originally declared" }
};
constexpr bool
}
constexpr bool b = f(); // { dg-message "in .constexpr. expansion of " }
-// { dg-message "originally declared" "" { target *-*-* } .-1 }
template <typename T>
struct S {
using U = array<T, 4>;
- const U m;
+ const U m; // { dg-message "originally declared" }
constexpr S(int) : m{}
{
const_cast<int &>(const_cast<const U &>(m)[0]) = 42; // { dg-error "modifying a const object" }
}
};
-constexpr S<int> p = { 10 }; // { dg-message "originally declared" }
+constexpr S<int> p = { 10 };
struct array
{
constexpr const E &operator[](size_t n) const noexcept { return elems[n]; }
- const E elems[N];
+ const E elems[N]; // { dg-message "originally declared" }
};
template <typename T>
}
};
-constexpr S<int> p = { 10 }; // { dg-message "originally declared" }
+constexpr S<int> p = { 10 };
template <typename T>
struct S {
using U = array2<T, 4>;
- const U m;
+ const U m; // { dg-message "originally declared" }
constexpr S(int) : m{}
{
const_cast<int &>(m.a[0]) = 42; // { dg-error "modifying a const object" }
}
};
-constexpr S<int> p = { 10 }; // { dg-message "originally declared" }
+constexpr S<int> p = { 10 };
template <typename T>
struct S {
- const X x;
+ const X x; // { dg-message "originally declared" }
constexpr S(int) : x{}
{
const_cast<X&>(x).i = 19; // { dg-error "modifying a const object" }
}
};
-constexpr S<int> p = { 10 }; // { dg-message "originally declared" }
+constexpr S<int> p = { 10 };
};
struct B {
- const A a;
+ const A a; // { dg-message "originally declared" }
constexpr B(bool b) {
if (b)
const_cast<A &>(a).n = 3; // { dg-error "modifying a const object" }
static_assert(b.a.n == 2, "");
constexpr B b2(true); // { dg-message "in .constexpr. expansion of " }
-// { dg-message "originally declared" "" { target *-*-* } .-1 }
static_assert((b2.a.n, 1), "");
// { dg-do compile { target c++14 } }
struct A {
- const int n;
+ const int n; // { dg-message "originally declared" }
constexpr A() : n(1) { }
};
struct B {
}
};
constexpr B b; // { dg-message "in .constexpr. expansion of " }
-// { dg-message "originally declared" "" { target *-*-* } .-1 }
static_assert((b.a.n, 1), "");
struct D { int n; };
-struct C { const D d; };
+struct C { const D d; }; // { dg-message "originally declared" }
struct A {
C c;
};
constexpr B b{}; // { dg-message "in .constexpr. expansion of " }
-// { dg-message "originally declared" "" { target *-*-* } .-1 }
static_assert((b.a.c.d.n, 1), "");
};
constexpr int foo(U *up) {
- up->a++;
+ up->a++; // { dg-error "accessing uninitialized member" }
return {42};
}
-extern constexpr U u = {}; // { dg-error "accessing uninitialized member" }
+extern constexpr U u = {}; // { dg-message "in .constexpr. expansion" }
constexpr float32x4_t fill(float x) {
float32x4_t v{0};
constexpr auto vs = sizeof(v)/sizeof(v[0]);
- for (auto i=0U; i<vs; ++i) v[i]=i;
+ for (auto i=0U; i<vs; ++i) v[i]=i; // { dg-error "not a constant" }
return v+x;
}
float32x4_t foo(float32x4_t x) {
- constexpr float32x4_t v = fill(1.f); // { dg-error "not a constant||in .constexpr. expansion of " }
+ constexpr float32x4_t v = fill(1.f); // { dg-message "in .constexpr. expansion of " }
return x+v;
}
// Testcase from P0170R1
// { dg-do compile { target c++17 } }
-auto monoid = [](auto v) { return [=] { return v; }; };
+auto monoid = [](auto v) { return [=] { return v; }; }; // { dg-error "not usable in a constant expression" }
auto add = [](auto m1) constexpr {
auto ret = m1();
return [=](auto m2) mutable {
// member function call operator can not perform an lvalue-to-rvalue conversion
// on one of its subobjects (that represents its capture) in a constant
// expression.
- auto two = monoid(2);
+ auto two = monoid(2); // { dg-message "not declared .constexpr." }
if (!(two() == 2)) __builtin_abort(); // OK, not a constant expression.
static_assert(add(one)(one)() == two()); // { dg-error "|in .constexpr. expansion of " } two() is not a constant expression
static_assert(add(one)(one)() == monoid(2)()); // OK
auto Fwd = [](int (*fp)(int), auto a) { return fp(a); };
auto C = [](auto a) { return a; };
static_assert( Fwd(C ,3) == 3); // OK
+
// No specialization of the function call operator template can be constexpr
// (because of the local static).
auto NC = [](auto a) { static int s; return a; }; // { dg-error "static" }
-// { dg-message "operator int" "" { target *-*-* } .+1 }
+// { dg-error "called in a constant expression" "" { target *-*-* } .-1 }
+
static_assert( Fwd(NC ,3) == 3); // { dg-error "" }
+// { dg-message "operator int" "" { target *-*-* } .-1 }
// We look for the string "operator int" to check that we aren't trying to do
// template pretty-printing in an expression; that gets incredibly unwieldy
{
T t = { 1, 2 };
S s = __builtin_bit_cast (S, t);
- return s.a[1] == 0;
+ return s.a[1] == 0; // { dg-error "accessing uninitialized array element" }
}
constexpr bool
{
W t = { 1, 2 };
V s = __builtin_bit_cast (V, t);
- return s.b.a[1] == 1;
+ return s.b.a[1] == 1; // { dg-error "accessing uninitialized array element" }
}
constexpr bool a = f1 ();
constexpr bool b = f2 ();
-constexpr bool c = f3 (); // { dg-error "accessing uninitialized array element" }
-constexpr bool d = f4 ();
+constexpr bool c = f3 (); // { dg-message "in .constexpr. expansion" }
+constexpr bool d = f4 (); // { dg-message "in .constexpr. expansion" }
constexpr bool e = f5 ();
-constexpr bool f = f6 (); // { dg-error "accessing uninitialized array element" }
+constexpr bool f = f6 (); // { dg-message "in .constexpr. expansion" }
{
T t = { 1, 2 };
S s = __builtin_bit_cast (S, t);
- return s.a[1] == 0;
+ return s.a[1] == 0; // { dg-error "accessing uninitialized array element" }
}
constexpr bool
{
W t = { 1, 2 };
V s = __builtin_bit_cast (V, t);
- return s.b.a[1] == 1;
+ return s.b.a[1] == 1; // { dg-error "accessing uninitialized array element" }
}
constexpr bool a = f1 ();
constexpr bool b = f2 ();
-constexpr bool c = f3 (); // { dg-error "accessing uninitialized array element" }
-constexpr bool d = f4 ();
+constexpr bool c = f3 (); // { dg-message "in .constexpr. expansion" }
+constexpr bool d = f4 (); // { dg-message "in .constexpr. expansion" }
constexpr bool e = f5 ();
-constexpr bool f = f6 (); // { dg-error "accessing uninitialized array element" }
+constexpr bool f = f6 (); // { dg-message "in .constexpr. expansion" }
{
T1 t = { 0, 0, 0, 0, 0, 0, 0 };
S s = __builtin_bit_cast (S, t);
- unsigned char a = s.a;
+ unsigned char a = s.a; // { dg-error "accessing uninitialized member" }
return true;
}
{
T2 t = { 0, 0, 0, 0, 0, 0, 0 };
S s = __builtin_bit_cast (S, t);
- unsigned char b = s.b;
+ unsigned char b = s.b; // { dg-error "accessing uninitialized member" }
return true;
}
{
T3 t = { 0, 0, 0, 0, 0, 0, 0 };
S s = __builtin_bit_cast (S, t);
- unsigned char c = s.c;
+ unsigned char c = s.c; // { dg-error "accessing uninitialized member" }
return true;
}
constexpr bool a = f1 ();
constexpr bool b = f2 ();
constexpr bool c = f3 ();
-constexpr bool d = f4 ();
-constexpr bool e = f5 (); // { dg-error "accessing uninitialized member" }
-constexpr bool f = f6 (); // { dg-error "accessing uninitialized member" }
-constexpr bool g = f7 (); // { dg-error "accessing uninitialized member" }
+constexpr bool d = f4 (); // { dg-message "in .constexpr. expansion" }
+constexpr bool e = f5 (); // { dg-message "in .constexpr. expansion" }
+constexpr bool f = f6 (); // { dg-message "in .constexpr. expansion" }
+constexpr bool g = f7 (); // { dg-message "in .constexpr. expansion" }
{
V f { .b = 42 };
constexpr auto m = &V::a;
- return (f.*m) == 42;
+ return (f.*m) == 42; // { dg-error "accessing 'V::a' member instead of initialized 'V::b' member in constant expression" }
}
constexpr bool
}
static_assert (bar (), ""); // { dg-error "non-constant condition for static assertion" }
- // { dg-error "accessing 'V::a' member instead of initialized 'V::b' member in constant expression" "" { target *-*-* } .-1 }
+ // { dg-message "in .constexpr. expansion" "" { target *-*-* } .-1 }
static_assert (baz (), "");
constexpr B::B(V* v, A* a)
{
- dynamic_cast<B*>(a);
+ dynamic_cast<B*>(a); // { dg-error "accessing uninitialized member" }
}
-constexpr D d; // { dg-error "accessing uninitialized member" }
-// { dg-message "in 'constexpr' expansion of" "" { target *-*-* } .-1 }
+constexpr D d; // { dg-message "in 'constexpr' expansion of" }
fn5 ()
{
struct S { int a = 9; int b; } s;
- return s.b;
+ return s.b; // { dg-error "accessing uninitialized member" }
}
-constexpr int b = fn5 (); // { dg-error "accessing uninitialized member" }
-// { dg-message "in .constexpr. expansion of" "" { target *-*-* } .-1 }
+constexpr int b = fn5 (); // { dg-message "in .constexpr. expansion of" }
constexpr int
fn6 ()
constexpr int
foo ()
{
- A *a = new B ();
+ A *a = new B (); // { dg-message "allocated here" }
a->a = 4;
delete a;
- int r = a->foo ();
+ int r = a->foo (); // { dg-error "constant expression" }
return r;
}
-constexpr auto a = foo (); // { dg-error "constant expression" }
+constexpr auto a = foo (); // { dg-message "in .constexpr. expansion" }
f5 ()
{
int *p = new int; // { dg-message "allocated here" }
- return *p == 1;
+ return *p == 1; // { dg-error "the content of uninitialized storage is not usable in a constant expression" }
}
-constexpr auto v5 = f5 (); // { dg-error "the content of uninitialized storage is not usable in a constant expression" }
- // { dg-message "in 'constexpr' expansion of" "" { target *-*-* } .-1 }
+constexpr auto v5 = f5 (); // { dg-message "in 'constexpr' expansion of" }
constexpr bool
f6 ()
int *p = new int (2); // { dg-message "allocated here" }
int *q = p;
delete p;
- return *q == 2;
+ return *q == 2; // { dg-error "use of allocated storage after deallocation in a constant expression" }
}
-constexpr auto v6 = f6 (); // { dg-error "use of allocated storage after deallocation in a constant expression" }
- // { dg-message "in 'constexpr' expansion of" "" { target *-*-* } .-1 }
+constexpr auto v6 = f6 (); // { dg-message "in 'constexpr' expansion of" }
constexpr int *
f7 ()
struct alignas(64) S2
{
constexpr S2 ()
- : m_tabS1()
+ : m_tabS1() // { dg-error "used before its definition" }
{}
S1 m_tabS1[7];
};
constinit S2 objX; // { dg-error ".constinit. variable .objX. does not have a constant initializer" }
-// { dg-error "used before its definition" "" { target *-*-* } .-1 }
-// // { dg-message "in .constexpr. expansion of" "" { target *-*-* } .-2 }
+// { dg-message "in .constexpr. expansion of" "" { target *-*-* } .-1 }
constexpr S1::S1 ()
: m_i(14)
struct A { int a; };
struct B;
constexpr int B::*n = nullptr;
-constexpr auto a = std::is_corresponding_member (&A::a, n); // { dg-error "invalid use of incomplete type 'struct B'" }
-constexpr auto b = std::is_corresponding_member (n, &A::a); // { dg-error "invalid use of incomplete type 'struct B'" }
+constexpr auto a = std::is_corresponding_member (&A::a, n); // { dg-message "in .constexpr. expansion of" }
+constexpr auto b = std::is_corresponding_member (n, &A::a); // { dg-message "in .constexpr. expansion of" }
void
foo (int B::*m)
constexpr int
fn_bad (int n)
{
- __extension__ int a [n] = { 0 };
+ __extension__ int a [n] = { 0 }; // { dg-error "array subscript" }
int z = a [0] + (n ? fn_bad (n - 1) : 0); // { dg-message "in .constexpr. expansion of " }
return z;
}
}
constexpr int i1 = fn_ok (3);
-constexpr int i2 = fn_bad (3); // { dg-error "array subscript|in .constexpr. expansion of " }
+constexpr int i2 = fn_bad (3); // { dg-message "in .constexpr. expansion of " }
constexpr int
foo (int n)
{
- __extension__ int a[n] = { 1, 2, 3, 4, 5, 6 };
+ __extension__ int a[n] = { 1, 2, 3, 4, 5, 6 }; // { dg-error "array subscript" }
int z = 0;
for (int i = 0; i <= n; ++i)
z += a[i];
return z;
}
-constexpr int n = foo (3); // { dg-error "array subscript|in .constexpr. expansion of " }
+constexpr int n = foo (3); // { dg-message "in .constexpr. expansion of " }
{
if (b != 2)
a = a / b; // { dg-error "..7 / 0.. is not a constant expression" }
+ // { dg-error "overflow in constant expression" "" { target *-*-* } .-1 }
return a;
}
constexpr int k1 = fn3 (8, 4);
constexpr int k2 = fn3 (7, 0); // { dg-message "in .constexpr. expansion" }
-constexpr int k3 = fn3 (INT_MIN, -1); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr int k3 = fn3 (INT_MIN, -1); // { dg-message "in .constexpr. expansion of " }
SA (k1 == 2);
fn7 (const int *a, int b)
{
if (b != 3)
- return fn6 (*a, b);
+ return fn6 (*a, b); // { dg-error "null pointer" }
return 7;
}
constexpr int n1 = 7;
constexpr int n2 = fn7 (&n1, 5);
-constexpr int n3 = fn7 ((const int *) 0, 8); // { dg-error "null pointer|in .constexpr. expansion of " }
+constexpr int n3 = fn7 ((const int *) 0, 8); // { dg-message "in .constexpr. expansion of " }
constexpr int
fn8 (int i)
fn9 (int a, int b)
{
if (b != 0)
- return a + b;
+ return a + b; // { dg-error "overflow in constant expression" }
return a;
}
constexpr int p1 = fn9 (42, 7);
-constexpr int p2 = fn9 (__INT_MAX__, 1); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr int p2 = fn9 (__INT_MAX__, 1); // { dg-message "in .constexpr. expansion of " }
constexpr int p3 = fn9 (__INT_MAX__, -1);
constexpr int p4 = fn9 (INT_MIN, 1);
-constexpr int p5 = fn9 (INT_MIN, -1); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr int p5 = fn9 (INT_MIN, -1); // { dg-message "in .constexpr. expansion of " }
SA (p1 == 49);
SA (p3 == __INT_MAX__ - 1);
fn10 (int a, int b)
{
if (b != 0)
- return a * b;
+ return a * b; // { dg-error "overflow in constant expression" }
return a;
}
constexpr int q1 = fn10 (10, 10);
-constexpr int q2 = fn10 (__INT_MAX__, 2); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
-constexpr int q3 = fn10 (INT_MIN, 2); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr int q2 = fn10 (__INT_MAX__, 2); // { dg-message "in .constexpr. expansion of " }
+constexpr int q3 = fn10 (INT_MIN, 2); // { dg-message "in .constexpr. expansion of " }
constexpr int q4 = fn10 (-1, -1);
SA (q1 == 100);
constexpr int
fn11 (double d)
{
- int i = d;
+ int i = d; // { dg-error "overflow in constant expression" }
if (i != 0)
return i;
return i * 2;
}
constexpr int r1 = fn11 (3.4);
-constexpr int r2 = fn11 (__builtin_inf ()); // { dg-error "overflow in constant expression|in .constexpr. expansion of " }
+constexpr int r2 = fn11 (__builtin_inf ()); // { dg-message "in .constexpr. expansion of " }
constexpr int
fn12 (int i)
return outa;
}
-static_assert(test01()); // { dg-error "outside the bounds" }
+static_assert(test01()); // { dg-error "non-constant condition" }
constexpr bool
test02()
return outa;
}
-static_assert(test02()); // { dg-error "outside the bounds" }
+static_assert(test02()); // { dg-error "non-constant condition" }
-// { dg-prune-output "non-constant condition" }
+// Errors occuring within <algorithm> internals:
+// { dg-error "outside the bounds of array" "" { target *-*-* } 0 }
// { dg-prune-output "in 'constexpr'" }
static_assert( std::gcd(2ull, LLONG_MIN) == 2 );
// But |INT_MIN| cannot be represented in common_type<int, int> i.e. int.
-constexpr int a = std::gcd(INT_MIN, 1); // { dg-error "overflow" }
-constexpr int b = std::gcd(1, INT_MIN); // { dg-error "overflow" }
+constexpr int a = std::gcd(INT_MIN, 1); // { dg-error "in .constexpr." }
+constexpr int b = std::gcd(1, INT_MIN); // { dg-error "in .constexpr." }
// And |LLONG_MIN| cannot be represented in long.
-constexpr long long c = std::gcd(LLONG_MIN, 1); // { dg-error "overflow" }
-constexpr long long d = std::gcd(1, LLONG_MIN); // { dg-error "overflow" }
+constexpr long long c = std::gcd(LLONG_MIN, 1); // { dg-error "in .constexpr." }
+constexpr long long d = std::gcd(1, LLONG_MIN); // { dg-error "in .constexpr." }
+
+// { dg-error "overflow" "" { target *-*-* } 0 }
static_assert( std::lcm(1u, INT_MIN) == INT_MAX+1u );
// But |INT_MIN| cannot be represented in common_type<int, int> i.e. int.
-constexpr int a = std::lcm(INT_MIN, 1); // { dg-error "overflow" }
-constexpr int b = std::lcm(1, INT_MIN); // { dg-error "overflow" }
+constexpr int a = std::lcm(INT_MIN, 1); // { dg-error "in .constexpr." }
+constexpr int b = std::lcm(1, INT_MIN); // { dg-error "in .constexpr." }
// And the LCM of 50000 and 49999 cannot be represented in int.
-constexpr int c = std::lcm(50000, 49999); // { dg-error "overflow" }
-constexpr int d = std::lcm(49999, 50000); // { dg-error "overflow" }
+constexpr int c = std::lcm(50000, 49999); // { dg-error "in .constexpr." }
+constexpr int d = std::lcm(49999, 50000); // { dg-error "in .constexpr." }
// Similarly for unsigned, but the diagnostic is a failed assertion instead.
-constexpr int e = std::lcm(500000u, 499999); // { dg-error "in 'constexpr'" }
-constexpr int f = std::lcm(499999u, 500000); // { dg-error "in 'constexpr'" }
+constexpr int e = std::lcm(500000u, 499999); // { dg-error "in .constexpr." }
+constexpr int f = std::lcm(499999u, 500000); // { dg-error "in .constexpr." }
+
+// { dg-error "overflow" "" { target *-*-* } 0 }
// { dg-error "unreachable" "" { target *-*-* } 0 }
projects / thirdparty / gcc.git / commitdiff
