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-rw-r--r--tools/perf/ui/stdio/hist.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 66aa4eb369f1..5565105c9688 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -5,6 +5,7 @@
#include "../../util/sort.h"
#include "../../util/evsel.h"
#include "../../util/srcline.h"
+#include "../../util/string2.h"
#include "../../util/sane_ctype.h"
static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
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