You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
828 B
21 lines
828 B
--- a/gcc/varpool.c
|
|
+++ b/gcc/varpool.c
|
|
@@ -329,8 +329,16 @@ ctor_for_folding (tree decl)
|
|
|
|
/* Variables declared 'const' without an initializer
|
|
have zero as the initializer if they may not be
|
|
- overridden at link or run time. */
|
|
- if (!DECL_INITIAL (real_decl)
|
|
+ overridden at link or run time.
|
|
+
|
|
+ It is actually requirement for C++ compiler to optimize const variables
|
|
+ consistently. As a GNU extension, do not enfore this rule for user defined
|
|
+ weak variables, so we support interposition on:
|
|
+ static const int dummy = 0;
|
|
+ extern const int foo __attribute__((__weak__, __alias__("dummy")));
|
|
+ */
|
|
+ if ((!DECL_INITIAL (real_decl)
|
|
+ || (DECL_WEAK (decl) && !DECL_COMDAT (decl)))
|
|
&& (DECL_EXTERNAL (decl) || decl_replaceable_p (decl)))
|
|
return error_mark_node;
|
|
|
|
|