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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
	Clark Williams <williams@redhat.com>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Adrian Hunter <adrian.hunter@intel.com>
Subject: [PATCH 1/5] perf tests bp_account: Make global variable static
Date: Tue,  3 Mar 2020 16:48:23 -0300	[thread overview]
Message-ID: <20200303194827.6461-2-acme@kernel.org> (raw)
In-Reply-To: <20200303194827.6461-1-acme@kernel.org>

From: Arnaldo Carvalho de Melo <acme@redhat.com>

To fix the build with newer gccs, that without this patch exit with:

    LD       /tmp/build/perf/tests/perf-in.o
  ld: /tmp/build/perf/tests/bp_account.o:/git/perf/tools/perf/tests/bp_account.c:22: multiple definition of `the_var'; /tmp/build/perf/tests/bp_signal.o:/git/perf/tools/perf/tests/bp_signal.c:38: first defined here
  make[4]: *** [/git/perf/tools/build/Makefile.build:145: /tmp/build/perf/tests/perf-in.o] Error 1

First noticed in fedora:rawhide/32 with:

  [perfbuilder@a5ff49d6e6e4 ~]$ gcc --version
  gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8)

Reported-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/tests/bp_account.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/bp_account.c b/tools/perf/tests/bp_account.c
index d0b935356274..489b50604cf2 100644
--- a/tools/perf/tests/bp_account.c
+++ b/tools/perf/tests/bp_account.c
@@ -19,7 +19,7 @@
 #include "../perf-sys.h"
 #include "cloexec.h"
 
-volatile long the_var;
+static volatile long the_var;
 
 static noinline int test_function(void)
 {
-- 
2.21.1


  reply	other threads:[~2020-03-03 19:48 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03 19:48 [GIT PULL] perf/urgent fixes Arnaldo Carvalho de Melo
2020-03-03 19:48 ` Arnaldo Carvalho de Melo [this message]
2020-03-03 19:48 ` [PATCH 2/5] perf env: Do not return pointers to local variables Arnaldo Carvalho de Melo
2020-03-03 19:48 ` [PATCH 3/5] perf parse-events: Use asprintf() instead of strncpy() to read tracepoint files Arnaldo Carvalho de Melo
2020-03-03 19:48 ` [PATCH 4/5] perf bench: Share some global variables to fix build with gcc 10 Arnaldo Carvalho de Melo
2020-03-05  8:43   ` Rantala, Tommi T. (Nokia - FI/Espoo)
2020-03-05 15:16     ` Arnaldo Carvalho de MElo
2020-03-03 19:48 ` [PATCH 5/5] perf symbols: Don't try to find a vmlinux file when looking for kernel modules Arnaldo Carvalho de Melo
2020-03-04 10:54 ` [GIT PULL] perf/urgent fixes Ingo Molnar
2020-03-06 19:11 Arnaldo Carvalho de Melo
2020-03-06 19:11 ` [PATCH 1/5] perf tests bp_account: Make global variable static Arnaldo Carvalho de Melo

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