From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Mon, 14 Aug 2017 14:10:48 +0200
Subject: [PATCH] genmoddep: Check that no modules provide the same symbol.

The semantics of 2 modules providing the same symbol are undefined. So
ensure that it doesn't happen.
---
 grub-core/genmoddep.awk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/grub-core/genmoddep.awk b/grub-core/genmoddep.awk
index bd98d84cdd7..8976beb91d0 100644
--- a/grub-core/genmoddep.awk
+++ b/grub-core/genmoddep.awk
@@ -18,6 +18,10 @@ BEGIN {
 
 {
   if ($1 == "defined") {
+    if ($3 in symtab) {
+      printf "%s in %s is duplicated in %s\n", $3, $2, symtab[$3] >"/dev/stderr";
+      error++;
+    }
     symtab[$3] = $2;
     modtab[$2] = "" modtab[$2]
   } else if ($1 == "undefined") {