re PR c/35330 (ICE with invalid pragma weak)

2015-02-27  Kai Tietz  <ktietz@redhat.com>

	PR c/35330
	* c-pragma.c (handle_pragma_weak): Do not try to create
	weak/alias of declarations not being function, or variable
	declarations.

2015-02-27  Kai Tietz  <ktietz@redhat.com>

	PR c/35330
	* gcc.dg/weak/weak-17.c: New file.

From-SVN: r221053

gcc/c-family/ChangeLog

+2015-02-27  Kai Tietz  <ktietz@redhat.com>
+
+	PR c/35330
+	* c-pragma.c (handle_pragma_weak): Do not try to create
+	weak/alias of declarations not being function, or variable
+	declarations.
+
 2015-02-24  Thomas Schwinge  <thomas@codesourcery.com>
 
 	PR libgomp/64625

gcc/c-family/c-pragma.c

@@ -392,6 +392,9 @@ handle_pragma_weak (cpp_reader * ARG_UNUSED (dummy))
   decl = identifier_global_value (name);
   if (decl && DECL_P (decl))
     {
+      if (!VAR_OR_FUNCTION_DECL_P (decl))
+	GCC_BAD2 ("%<#pragma weak%> declaration of %q+D not allowed,"
+		  " ignored", decl);
       apply_pragma_weak (decl, value);
       if (value)
 	{

gcc/testsuite/ChangeLog

+2015-02-27  Kai Tietz  <ktietz@redhat.com>
+
+	PR c/35330
+	* gcc.dg/weak/weak-17.c: New file.
+
 2015-02-27  Richard Biener  <rguenther@suse.de>
 
 	PR lto/65193

gcc/testsuite/gcc.dg/weak/weak-17.c

+/* { dg-do compile } */
+/* { dg-require-weak "" } */
+#pragma weak int = foo
+
+/* { dg-warning "declaration of" "weak" { target *-*-* } 0 } */