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-rw-r--r--tools/perf/util/expr.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index aa631e37ad1e..8b4ce704a68d 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -45,6 +45,7 @@ __expr__parse(double *val, struct expr_parse_ctx *ctx, const char *expr,
#ifdef PARSER_DEBUG
expr_debug = 1;
+ expr_set_debug(1, scanner);
#endif
ret = expr_parse(val, ctx, scanner);