[PATCH] perf tools: Fix bison warnings for pure parser

[Andi Kleen <andi@firstfloor.org>]

From: Andi Kleen <ak@linux.intel.com>

bison 3.4.1 complains during a perf build:

util/parse-events.y:1.1-12: warning: deprecated directive, use ‘%define api.pure’ [-Wdeprecated]
    1 | %pure-parser
      | ^~~~~~~~~~~~
  CC       /home/andi/lsrc/obj-perf/ui/browsers/map.o
util/parse-events.y: warning: fix-its can be applied.  Rerun with option '--update'. [-Wother]

util/expr.y:13.1-12: warning: deprecated directive, use ‘%define api.pure’ [-Wdeprecated]
   13 | %pure-parser
      | ^~~~~~~~~~~~
util/expr.y: warning: fix-its can be applied.  Rerun with option '--update'. [-Wother]

Change the declarations to %define api.pure

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/util/expr.y         | 2 +-
 tools/perf/util/parse-events.y | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index 432b8560cf51..803c0929c205 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -10,7 +10,7 @@
 #define MAXIDLEN 256
 %}
 
-%pure-parser
+%define api.pure
 %parse-param { double *final_val }
 %parse-param { struct parse_ctx *ctx }
 %parse-param { const char **pp }
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 6ad8d4914969..4eb10c27c30f 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -1,4 +1,4 @@
-%pure-parser
+%define api.pure
 %parse-param {void *_parse_state}
 %parse-param {void *scanner}
 %lex-param {void* scanner}
-- 
2.21.0