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- --- 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;
-
|
