From 673befd2d7745a90c1c4fcb6d2f0e266c04f8c97 Mon Sep 17 00:00:00 2001
From: Thomas Preud'homme <robotux@celest.fr>
Date: Fri, 20 Sep 2013 22:49:49 +0200
Subject: [PATCH] Report error when redefining enumerator

Prevent the following code from compiling:

enum color {RED, GREEN, BLUE};
enum rgb {RED, G, B};
---
 tccgen.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tccgen.c b/tccgen.c
index 77ff87c0..0f0aac58 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -2786,6 +2786,10 @@ static void struct_decl(CType *type, int u, int tdef)
                 v = tok;
                 if (v < TOK_UIDENT)
                     expect("identifier");
+                ss = sym_find(v);
+                if (ss)
+                    tcc_error("redefinition of enumerator '%s'",
+                              get_tok_str(v, NULL));
                 next();
                 if (tok == '=') {
                     next();
-- 
2.11.4.GIT