If a line of more than 256 bytes is generated, the test will fail but the reason is not clear. Add a check for this condition and print a helpful message.
Signed-off-by: Simon Glass sjg@chromium.org ---
test/ut.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/test/ut.c b/test/ut.c index a0fe5facac7..350509a2926 100644 --- a/test/ut.c +++ b/test/ut.c @@ -68,11 +68,17 @@ static int readline_check(struct unit_test_state *uts) int ut_check_console_line(struct unit_test_state *uts, const char *fmt, ...) { va_list args; + int len; int ret;
va_start(args, fmt); - vsnprintf(uts->expect_str, sizeof(uts->expect_str), fmt, args); + len = vsnprintf(uts->expect_str, sizeof(uts->expect_str), fmt, args); va_end(args); + if (len >= sizeof(uts->expect_str)) { + ut_fail(uts, __FILE__, __LINE__, __func__, + "unit_test_state->expect_str too small"); + return -EOVERFLOW; + } ret = readline_check(uts); if (ret < 0) return ret; @@ -83,11 +89,17 @@ int ut_check_console_line(struct unit_test_state *uts, const char *fmt, ...) int ut_check_console_linen(struct unit_test_state *uts, const char *fmt, ...) { va_list args; + int len; int ret;
va_start(args, fmt); - vsnprintf(uts->expect_str, sizeof(uts->expect_str), fmt, args); + len = vsnprintf(uts->expect_str, sizeof(uts->expect_str), fmt, args); va_end(args); + if (len >= sizeof(uts->expect_str)) { + ut_fail(uts, __FILE__, __LINE__, __func__, + "unit_test_state->expect_str too small"); + return -EOVERFLOW; + } ret = readline_check(uts); if (ret < 0) return ret;