From 4e9842ef33789dae702302509d6c6b8d0acccb13 Mon Sep 17 00:00:00 2001
From: Greg King <gregdk@users.sf.net>
Date: Sun, 9 Aug 2015 06:27:05 -0400
Subject: [PATCH 1/1] Stopped extern declarations from changing previous
 static, but otherwise identical, declarations.

---
 src/cc65/symtab.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cc65/symtab.c b/src/cc65/symtab.c
index 1f63e9430..0e4de4ea2 100644
--- a/src/cc65/symtab.c
+++ b/src/cc65/symtab.c
@@ -813,6 +813,11 @@ SymEntry* AddGlobalSym (const char* Name, const Type* T, unsigned Flags)
             }
         }
 
+        /* An extern declaration must not change the current linkage. */
+        if (IsFunc || (Flags & (SC_EXTERN | SC_DEF)) == SC_EXTERN) {
+            Flags &= ~SC_EXTERN;
+        }
+
         /* Add the new flags */
         Entry->Flags |= Flags;
 
-- 
2.39.2