[PATCH] perf build-id: Fix filename size calculation

[Namhyung Kim]

The filename is a pointer variable so the sizeof(filename) will return
length of a pointer. Fix it by using 'size'.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxx>
---
 tools/perf/util/header.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4c7c2d73251f..c0b70c697a36 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -296,7 +296,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
 	if (mkdir_p(filename, 0755))
 		goto out_free;
 
-	snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id);
+	snprintf(filename + len, size - len, "/%s", sbuild_id);
 
 	if (access(filename, F_OK)) {
 		if (is_kallsyms) {
-- 
1.7.9.2

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