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-rw-r--r--lib/test_hexdump.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 940b1d318831..141d031e6a13 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -137,17 +137,26 @@ static void __init test_hexdump_overflow(size_t buflen, bool ascii)
{
char buf[TEST_HEXDUMP_BUF_SIZE];
const char *t = test_data_1_le[0];
+ size_t len = 1;
+ int rs = 16, gs = 1;
+ int ae, he, e, r;
bool a;
- int e, r;
memset(buf, FILL_CHAR, sizeof(buf));
- r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, buflen, ascii);
+ r = hex_dump_to_buffer(data_b, len, rs, gs, buf, buflen, ascii);
+
+ /*
+ * Caller must provide the data length multiple of groupsize. The
+ * calculations below are made with that assumption in mind.
+ */
+ ae = rs * 2 /* hex */ + rs / gs /* spaces */ + 1 /* space */ + len /* ascii */;
+ he = (gs * 2 /* hex */ + 1 /* space */) * len / gs - 1 /* no trailing space */;
if (ascii)
- e = 50;
+ e = ae;
else
- e = 2;
+ e = he;
buf[e + 2] = '\0';
if (!buflen) {