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tree.c (handle_nodiscard_attribute): Do not warn about nodiscard applied to a constructor.

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/cp
2019-08-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* tree.c (handle_nodiscard_attribute): Do not warn about nodiscard
	applied to a constructor.

/testsuite
2019-08-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp1z/nodiscard6.C: New.

From-SVN: r274002
This commit is contained in:
Paolo Carlini 2019-08-02 08:52:42 +00:00 committed by Paolo Carlini
parent a684432bf7
commit c0cc62604f
4 changed files with 22 additions and 1 deletions
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5
gcc/cp/ChangeLog
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@ -1,3 +1,8 @@
2019-08-02 Paolo Carlini <paolo.carlini@oracle.com>
* tree.c (handle_nodiscard_attribute): Do not warn about nodiscard
applied to a constructor.
2019-08-02 Martin Liska <mliska@suse.cz>
* decl.c (grok_op_properties):

3
gcc/cp/tree.c
View File

@ -4361,7 +4361,8 @@ handle_nodiscard_attribute (tree *node, tree name, tree /*args*/,
{
if (TREE_CODE (*node) == FUNCTION_DECL)
{
if (VOID_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
if (VOID_TYPE_P (TREE_TYPE (TREE_TYPE (*node)))
&& !DECL_CONSTRUCTOR_P (*node))
warning_at (DECL_SOURCE_LOCATION (*node),
OPT_Wattributes, "%qE attribute applied to %qD with void "
"return type", name, *node);

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2019-08-02 Paolo Carlini <paolo.carlini@oracle.com>
* g++.dg/cpp1z/nodiscard6.C: New.
2019-08-02 Senthil Kumar Selvaraj <senthilkumar.selvaraj@microchip.com>
* gcc.dg/torture/ssa-fre-5.c: Add dg-require-effective-target int32.

11
gcc/testsuite/g++.dg/cpp1z/nodiscard6.C Normal file
View File

@ -0,0 +1,11 @@
// { dg-do compile { target c++11 } }
struct A
{
[[nodiscard]] A();
};
void foo()
{
A(); // { dg-warning "ignoring return value" }
}