[PATCH v2 01/17] tests/qtest: Use qemu_hexdump_to_buffer() in qtest_memwrite()

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

Replace sprintf("%02x) by equivalent qemu_hexdump_to_buffer()
helper and silent when using Apple clang 17.0.0:

  ../tests/qtest/libqtest.c:1522:9: warning: 'sprintf' is deprecated:
    This function is provided for compatibility reasons only.
    Due to security concerns inherent in the design of sprintf(3),
    it is highly recommended that you use snprintf(3) instead.
    [-Wdeprecated-declarations]

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 tests/qtest/libqtest.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index 7f66c1bbb3b6..b6b9f8fe161d 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -1509,7 +1509,6 @@ void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size)
 void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 {
     const uint8_t *ptr = data;
-    size_t i;
     char *enc;
 
     if (!size) {
@@ -1517,10 +1516,7 @@ void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
     }
 
     enc = g_malloc(2 * size + 1);
-
-    for (i = 0; i < size; i++) {
-        sprintf(&enc[i * 2], "%02x", ptr[i]);
-    }
+    qemu_hexdump_to_buffer(enc, 2 * size + 1, ptr, size);
 
     qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x%s\n", addr, size, enc);
     qtest_rsp(s);
-- 
2.55.0