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-rw-r--r--gcc/c-decl.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index 16cf655..8fc1f19 100644
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -1335,6 +1335,19 @@ duplicate_decls (tree newdecl, tree olddecl, int different_binding_level,
Currently, it can only be defined in the prototype. */
COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
+ /* If either declaration has a nondefault visibility, use it. */
+ if (DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT)
+ {
+ if (DECL_VISIBILITY (newdecl) != VISIBILITY_DEFAULT
+ && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
+ {
+ warning ("%J'%D': visibility attribute ignored because it",
+ newdecl, newdecl);
+ warning ("%Jconflicts with previous declaration here", olddecl);
+ }
+ DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
+ }
+
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
DECL_STATIC_CONSTRUCTOR(newdecl) |= DECL_STATIC_CONSTRUCTOR(olddecl);