PR ipa/92799 - ICE on a weakref function definition followed by a declaration

gcc/testsuite/ChangeLog:

	PR ipa/92799
	* gcc.dg/attr-weakref-5.c: New test.

gcc/ChangeLog:

	PR ipa/92799
	* cgraphunit.c (process_function_and_variable_attributes): Also
	complain about weakref function definitions and drop all effects
	of the attribute.

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/attr-weakref-5.c b/gcc/testsuite/gcc.dg/attr-weakref-5.c
new file mode 100644
index 0000000..e2f0406
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/attr-weakref-5.c
@@ -0,0 +1,31 @@
+/* PR middle-end/92799 - ICE on a weakref function definition followed
+   by a declaration
+   { dg-do compile }
+   { dg-options "-Wall" } */
+
+static __attribute__ ((weakref ("bar"))) void f0 (void) { }   // { dg-warning "'weakref' attribute ignored because function is defined" }
+
+extern void f0 (void);
+
+void* use_f0 (void) { return f0; }
+
+
+static __attribute__ ((weakref ("bar"))) void f1 (void) { }   // { dg-warning "'weakref' attribute ignored because function is defined" }
+
+static void f1 (void);
+
+void* use_f1 (void) { return f1; }
+
+
+static __attribute__ ((weakref ("bar"))) void f2 (void);
+
+static void f2 (void) { }                                     // { dg-error "redefinition" }
+
+void* use_f2 (void) { return f2; }
+
+
+static __attribute__ ((weakref ("bar"))) void f3 (void);
+
+void f3 (void) { }                                            // { dg-error "redefinition" }
+
+void* use_f3 (void) { return f3; }