perf header: Fix double fclose() on do_write(fd, xxx) failure
cppcheck reported:
[util/header.c:983]: (error) Used file that is not opened.
Thanks to Arnaldo Carvalho de Melo for pointing out that
fclose(NULL) is undefined behavior -> protect against it.
Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Link: http://lkml.kernel.org/r/1751778.SZQB4fNdIh@storm
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 7b24cf3..f6081cb 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -955,6 +955,7 @@
}
fclose(fp);
+ fp = NULL;
ret = do_write(fd, &mem_total, sizeof(u64));
if (ret)
@@ -981,7 +982,8 @@
ret = do_write_string(fd, buf);
done:
free(buf);
- fclose(fp);
+ if (fp)
+ fclose(fp);
return ret;
}