From f9df4186c17d686f1ca38f973d7a3a49e8e37c01 Mon Sep 17 00:00:00 2001
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From: Dirk Mueller <dmueller@suse.com>
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Date: Tue, 14 Jan 2020 18:53:41 +0100
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Subject: [PATCH] scripts/dtc: Remove redundant YYLOC global declaration
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gcc 10 will default to -fno-common, which causes this error at link
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time:
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(.text+0x0): multiple definition of `yylloc'; dtc-lexer.lex.o (symbol from plugin):(.text+0x0): first defined here
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This is because both dtc-lexer as well as dtc-parser define the same
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global symbol yyloc. Before with -fcommon those were merged into one
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defintion. The proper solution would be to to mark this as "extern",
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however that leads to:
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dtc-lexer.l:26:16: error: redundant redeclaration of 'yylloc' [-Werror=redundant-decls]
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26 | extern YYLTYPE yylloc;
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| ^~~~~~
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In file included from dtc-lexer.l:24:
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dtc-parser.tab.h:127:16: note: previous declaration of 'yylloc' was here
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127 | extern YYLTYPE yylloc;
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| ^~~~~~
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cc1: all warnings being treated as errors
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which means the declaration is completely redundant and can just be
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dropped.
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Signed-off-by: Dirk Mueller <dmueller@suse.com>
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Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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[robh: cherry-pick from upstream]
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Cc: stable@vger.kernel.org
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Signed-off-by: Rob Herring <robh@kernel.org>
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Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
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---
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scripts/dtc/dtc-lexer.l | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
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index 06c040902444..d1b3810156c7 100644
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--- a/scripts/dtc/dtc-lexer.l
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+++ b/scripts/dtc/dtc-lexer.l
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@@ -38,7 +38,6 @@ LINECOMMENT "//".*\n
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#include "srcpos.h"
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#include "dtc-parser.tab.h"
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-YYLTYPE yylloc;
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extern bool treesource_error;
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/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
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--
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2.25.1
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