[patch c-family]: Fix Bug 35330 - [4.8/4.9/5 regression] ICE with invalid pragma weak

[Kai Tietz]

Hi,

This patch addresses the reported ICE about #pragma weak used on
declarations not var or function.

ChangeLog

2015-02-26  Kai Tietz  <kti...@redhat.com>

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

Bootstrapped and regression tested on x86_64-unknown-linux-gnu.  Ok for apply?

Regards,
Kai

Index: c-pragma.c
===================================================================
--- c-pragma.c  (Revision 221019)
+++ c-pragma.c  (Arbeitskopie)
@@ -392,6 +392,11 @@ handle_pragma_weak (cpp_reader * ARG_UNUSED (dummy
   decl = identifier_global_value (name);
   if (decl && DECL_P (decl))
     {
+      if (TREE_CODE (decl) != FUNCTION_DECL && TREE_CODE (decl) != VAR_DECL)
+       {
+         error ("weak declaration of %q+D not allowed", decl);
+         return;
+       }
       apply_pragma_weak (decl, value);
       if (value)
        {