diff mbox series

c++: Add noreturn attribute further test coverage [PR110345]

Message ID ZtmoKm1Zi8Ml5jq5@tucnak
State New
Headers
Series c++: Add noreturn attribute further test coverage [PR110345] |

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Commit Message

Jakub Jelinek Sept. 5, 2024, 12:46 p.m. UTC 
  Hi!

Another non-problematic attribute.

Tested on x86_64-linux and i686-linux, ok for trunk?

2024-09-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* g++.dg/cpp0x/attr-noreturn1.C: New test.


	Jakub
diff mbox series

Patch

--- gcc/testsuite/g++.dg/cpp0x/attr-noreturn1.C.jj	2024-09-05 13:45:58.193567109 +0200
+++ gcc/testsuite/g++.dg/cpp0x/attr-noreturn1.C	2024-09-05 13:57:50.457348169 +0200
@@ -0,0 +1,160 @@ 
+// C++ 26 P2552R3 - On the ignorability of standard attributes
+// { dg-do compile { target c++11 } }
+
+int arr[2];
+struct S { int a, b; };
+S arr2[2];
+
+[[noreturn]] void foo1 ();
+[[noreturn ("foobar")]] void foo2 ();		// { dg-error "'noreturn' attribute does not take any arguments" }
+[[noreturn (0)]] void foo3 ();			// { dg-error "'noreturn' attribute does not take any arguments" }
+
+void
+foo (int n)
+{
+  auto a = [] [[noreturn]] () { do { } while (true); };
+  auto b = [] constexpr [[noreturn]] {};	// { dg-warning "'noreturn' attribute does not apply to types" }
+						// { dg-error "parameter declaration before lambda declaration specifiers only optional with" "" { target c++20_down } .-1 }
+						// { dg-error "'constexpr' lambda only available with" "" { target c++14_down } .-2 }
+  auto c = [] noexcept [[noreturn]] {};		// { dg-warning "'noreturn' attribute does not apply to types" }
+						// { dg-error "parameter declaration before lambda exception specification only optional with" "" { target c++20_down } .-1 }
+  auto d = [] () [[noreturn]] {};		// { dg-warning "'noreturn' attribute does not apply to types" }
+  auto e = new int [n] [[noreturn]];		// { dg-warning "attributes ignored on outermost array type in new expression" }
+  auto e2 = new int [n] [[noreturn]] [42];	// { dg-warning "attributes ignored on outermost array type in new expression" }
+  auto f = new int [n][42] [[noreturn]];	// { dg-warning "'noreturn' attribute does not apply to types" }
+  [[noreturn]];					// { dg-warning "attributes at the beginning of statement are ignored" }
+  [[noreturn]] {}				// { dg-warning "attributes at the beginning of statement are ignored" }
+  [[noreturn]] if (true) {}			// { dg-warning "attributes at the beginning of statement are ignored" }
+  [[noreturn]] while (false) {}			// { dg-warning "attributes at the beginning of statement are ignored" }
+  [[noreturn]] goto lab;			// { dg-warning "attributes at the beginning of statement are ignored" }
+  [[noreturn]] lab:;				// { dg-warning "'noreturn' attribute ignored" }
+  [[noreturn]] try {} catch (int) {}		// { dg-warning "attributes at the beginning of statement are ignored" }
+  if ([[noreturn]] int x = 0) {}		// { dg-warning "'noreturn' attribute ignored" }
+  switch (n)
+    {
+    [[noreturn]] case 1:			// { dg-warning "'noreturn' attribute ignored" }
+    [[noreturn]] break;				// { dg-warning "attributes at the beginning of statement are ignored" }
+    [[noreturn]] default:			// { dg-warning "'noreturn' attribute ignored" }
+	 break;
+    }
+  for ([[noreturn]] auto a : arr) {}		// { dg-warning "'noreturn' attribute ignored" }
+  for ([[noreturn]] auto [a, b] : arr2) {}	// { dg-warning "'noreturn' attribute ignored" }
+						// { dg-error "structured bindings only available with" "" { target c++14_down } .-1 }
+  [[noreturn]] asm ("");			// { dg-warning "attributes ignored on 'asm' declaration" }
+  try {} catch ([[noreturn]] int x) {}		// { dg-warning "'noreturn' attribute ignored" }
+  try {} catch ([[noreturn]] int) {}		// { dg-warning "'noreturn' attribute ignored" }
+  try {} catch (int [[noreturn]] x) {}		// { dg-warning "attribute ignored" }
+  try {} catch (int [[noreturn]]) {}		// { dg-warning "attribute ignored" }
+  try {} catch (int x [[noreturn]]) {}		// { dg-warning "'noreturn' attribute ignored" }
+}
+
+[[noreturn]] int bar ();
+using foobar [[noreturn]] = int;		// { dg-warning "'noreturn' attribute ignored" }
+[[noreturn]] int a;				// { dg-warning "'noreturn' attribute ignored" }
+[[noreturn]] auto [b, c] = arr;			// { dg-warning "'noreturn' attribute ignored" }
+						// { dg-error "structured bindings only available with" "" { target c++14_down } .-1 }
+[[noreturn]];					// { dg-warning "attribute ignored" }
+inline [[noreturn]] void baz () {}		// { dg-warning "attribute ignored" }
+						// { dg-error "standard attributes in middle of decl-specifiers" "" { target *-*-* } .-1 }
+constexpr [[noreturn]] int qux () { return 0; }	// { dg-warning "attribute ignored" }
+						// { dg-error "standard attributes in middle of decl-specifiers" "" { target *-*-* } .-1 }
+int [[noreturn]] d;				// { dg-warning "attribute ignored" }
+int const [[noreturn]] e = 1;			// { dg-warning "attribute ignored" }
+struct A {} [[noreturn]];			// { dg-warning "attribute ignored in declaration of 'struct A'" }
+struct A [[noreturn]];				// { dg-warning "attribute ignored" }
+struct A [[noreturn]] a1;			// { dg-warning "attribute ignored" }
+A [[noreturn]] a2;				// { dg-warning "attribute ignored" }
+enum B { B0 } [[noreturn]];			// { dg-warning "attribute ignored in declaration of 'enum B'" }
+enum B [[noreturn]];				// { dg-warning "attribute ignored" }
+enum B [[noreturn]] b1;				// { dg-warning "attribute ignored" }
+B [[noreturn]] b2;				// { dg-warning "attribute ignored" }
+struct [[noreturn]] C {};			// { dg-warning "'noreturn' attribute does not apply to types" }
+int f [[noreturn]];				// { dg-warning "'noreturn' attribute ignored" }
+int g[2] [[noreturn]];				// { dg-warning "'noreturn' attribute does not apply to types" }
+int g2 [[noreturn]] [2];			// { dg-warning "'noreturn' attribute ignored" }
+int corge () [[noreturn]];			// { dg-warning "'noreturn' attribute does not apply to types" }
+int *[[noreturn]] h;				// { dg-warning "'noreturn' attribute does not apply to types" }
+int & [[noreturn]] i = f;			// { dg-warning "'noreturn' attribute does not apply to types" }
+int && [[noreturn]] j = 0;			// { dg-warning "'noreturn' attribute does not apply to types" }
+int S::* [[noreturn]] k;			// { dg-warning "'noreturn' attribute does not apply to types" }
+auto l = sizeof (int [2] [[noreturn]]);		// { dg-warning "'noreturn' attribute does not apply to types" }
+int freddy ([[noreturn]] int a,			// { dg-warning "'noreturn' attribute ignored" }
+	    [[noreturn]] int,			// { dg-warning "'noreturn' attribute ignored" }
+	    [[noreturn]] int c = 0,		// { dg-warning "'noreturn' attribute ignored" }
+	    [[noreturn]] int = 0);		// { dg-warning "'noreturn' attribute ignored" }
+void
+corge ([[noreturn]] int a,			// { dg-warning "'noreturn' attribute ignored" }
+       [[noreturn]] int,			// { dg-warning "'noreturn' attribute ignored" }
+       [[noreturn]] int c = 0,			// { dg-warning "'noreturn' attribute ignored" }
+       [[noreturn]] int = 0)			// { dg-warning "'noreturn' attribute ignored" }
+{
+}
+[[noreturn]] void
+garply ()
+{
+  for (;;)
+    ;
+}
+[[noreturn]] int
+xyzzyy ()
+{
+  return 0;					// { dg-warning "function declared 'noreturn' has a 'return' statement" }
+}						// { dg-warning "'noreturn' function does return" "" { target *-*-* } .-1 }
+[[noreturn]] void
+xyzzyy2 ()
+{
+}						// { dg-warning "'noreturn' function does return" }
+int grault (int [[noreturn]] a,			// { dg-warning "attribute ignored" }
+	    int [[noreturn]],			// { dg-warning "attribute ignored" }
+	    int [[noreturn]] c = 0,		// { dg-warning "attribute ignored" }
+	    int [[noreturn]] = 0);		// { dg-warning "attribute ignored" }
+void
+waldo (int [[noreturn]] a,			// { dg-warning "attribute ignored" }
+       int [[noreturn]],			// { dg-warning "attribute ignored" }
+       int [[noreturn]] c = 0,			// { dg-warning "attribute ignored" }
+       int [[noreturn]] = 0)			// { dg-warning "attribute ignored" }
+{
+}
+int plugh (int a [[noreturn]],			// { dg-warning "'noreturn' attribute ignored" }
+	    int b [[noreturn]] = 0);		// { dg-warning "'noreturn' attribute ignored" }
+void
+thud (int a [[noreturn]],			// { dg-warning "'noreturn' attribute ignored" }
+      int b [[noreturn]] = 0)			// { dg-warning "'noreturn' attribute ignored" }
+{
+}
+enum [[noreturn]] D { D0 };			// { dg-warning "'noreturn' attribute does not apply to types" }
+enum class [[noreturn]] E { E0 };		// { dg-warning "'noreturn' attribute does not apply to types" }
+enum F {};
+enum [[noreturn]] F;				// { dg-warning "'noreturn' attribute does not apply to types" }
+enum G {
+  G0 [[noreturn]],				// { dg-warning "'noreturn' attribute ignored" }
+  G1 [[noreturn]] = 2				// { dg-warning "'noreturn' attribute ignored" }
+};
+namespace [[noreturn]] H { using H0 = int; }	// { dg-warning "'noreturn' attribute directive ignored" }
+namespace [[noreturn]] {}			// { dg-warning "'noreturn' attribute directive ignored" }
+[[noreturn]] using namespace H;			// { dg-warning "'noreturn' attribute directive ignored" }
+struct [[noreturn]] I				// { dg-warning "'noreturn' attribute does not apply to types" }
+{
+  [[noreturn]];					// { dg-error "declaration does not declare anything" }
+  [[noreturn]] int i;				// { dg-warning "'noreturn' attribute ignored" }
+  [[noreturn]] int foo ();
+  [[noreturn]] int bar () { return 1; }		// { dg-warning "function declared 'noreturn' has a 'return' statement" }
+  [[noreturn]] int baz () { for (;;) ; }
+  [[noreturn]] int : 0;				// { dg-warning "'noreturn' attribute ignored" }
+  [[noreturn]] int i2 : 5;			// { dg-warning "'noreturn' attribute ignored" }
+  [[noreturn]] static int i3;			// { dg-warning "'noreturn' attribute ignored" }
+  static int i4;
+};
+[[noreturn]] int I::i4 = 0;			// { dg-warning "'noreturn' attribute ignored" }
+struct J : [[noreturn]] C {};			// { dg-warning "attributes on base specifiers are ignored" }
+#if __cpp_concepts >= 201907L
+template <typename T>
+concept K [[noreturn]] = requires { true; };	// { dg-warning "'noreturn' attribute ignored" "" { target c++20 } }
+#endif
+typedef int L [[noreturn]];			// { dg-warning "'noreturn' attribute ignored" }
+template <typename T>
+struct M {};
+template <>
+struct [[noreturn]] M<int> { int m; };		// { dg-warning "'noreturn' attribute does not apply to types" }
+typedef int N[2] [[noreturn]];			// { dg-warning "'noreturn' attribute does not apply to types" }
+typedef int O [[noreturn]] [2];			// { dg-warning "'noreturn' attribute ignored" }