[PATCH] selftests/harness: remove use of LINE_MAX

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Android was seeing a compliation error because its C library does not
define LINE_MAX.  This replaces the use of LINE_MAX / snprintf with
asprintf, which will change the behavior to not truncate the test name
if it is over 2048 chars long.

See also:
https://github.com/llvm/llvm-project/issues/88119

Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
---
 tools/testing/selftests/kselftest_harness.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 4fd735e48ee7..70fedd2411ed 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -1156,7 +1156,7 @@ void __run_test(struct __fixture_metadata *f,
 		struct __test_metadata *t)
 {
 	struct __test_xfail *xfail;
-	char test_name[LINE_MAX];
+	char *test_name;
 	const char *diagnostic;
 
 	/* reset test struct */
@@ -1164,8 +1164,8 @@ void __run_test(struct __fixture_metadata *f,
 	t->trigger = 0;
 	memset(t->results->reason, 0, sizeof(t->results->reason));
 
-	snprintf(test_name, sizeof(test_name), "%s%s%s.%s",
-		 f->name, variant->name[0] ? "." : "", variant->name, t->name);
+	asprintf(&test_name, "%s%s%s.%s", f->name,
+	         variant->name[0] ? "." : "", variant->name, t->name);
 
 	ksft_print_msg(" RUN           %s ...\n", test_name);
 
@@ -1203,6 +1203,7 @@ void __run_test(struct __fixture_metadata *f,
 
 	ksft_test_result_code(t->exit_code, test_name,
 			      diagnostic ? "%s" : "", diagnostic);
+	free(test_name);
 }
 
 static int test_harness_run(int argc, char **argv)
-- 
2.44.0.683.g7961c838ac-goog





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