[PATCH v1 07/18] perf parse-events: Fix -Wdiscarded-qualifiers under C23

[Shreenidhi Shedi]

glibc >= 2.42 defaults to -std=gnu23, which promotes
    -Wdiscarded-qualifiers to an error.

util/print-events.c:206:21: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  206 |                 buf = strchr(nd->s, '@');

util/print-events.c:215:29: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  215 |                         ptr = strchr(nd2->s, '@');

Signed-off-by: Shreenidhi Shedi <yesshedi@xxxxxxxxx>
---
 tools/perf/util/print-events.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c
index c4d5d87fae2f..1ef1a3ed8051 100644
--- a/tools/perf/util/print-events.c
+++ b/tools/perf/util/print-events.c
@@ -203,7 +203,7 @@ void print_sdt_events(const char *subsys_glob, const char *event_glob,
 	strlist__delete(bidlist);
 
 	strlist__for_each_entry(nd, sdtlist) {
-		buf = strchr(nd->s, '@');
+		buf = strchr((char *)nd->s, '@');
 		if (buf)
 			*(buf++) = '\0';
 		if (name_only) {
@@ -212,7 +212,7 @@ void print_sdt_events(const char *subsys_glob, const char *event_glob,
 		}
 		nd2 = strlist__next(nd);
 		if (nd2) {
-			ptr = strchr(nd2->s, '@');
+			ptr = strchr((char *)nd2->s, '@');
 			if (ptr)
 				*ptr = '\0';
 			if (strcmp(nd->s, nd2->s) == 0)
-- 
2.54.0