diff options
Diffstat (limited to 'qtest.c')
| -rw-r--r-- | qtest.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/qtest.c b/qtest.c index da4826c69f..ce4c6dbbf9 100644 --- a/qtest.c +++ b/qtest.c @@ -133,6 +133,7 @@ static bool qtest_opened; * < OK * * ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0. + * For 'memset' a zero size is permitted and does nothing. * * DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller * than the expected size, the value will be zero filled at the end of the data @@ -493,10 +494,12 @@ static void qtest_process_command(CharDriverState *chr, gchar **words) len = strtoull(words[2], NULL, 0); pattern = strtoull(words[3], NULL, 0); - data = g_malloc(len); - memset(data, pattern, len); - cpu_physical_memory_write(addr, data, len); - g_free(data); + if (len) { + data = g_malloc(len); + memset(data, pattern, len); + cpu_physical_memory_write(addr, data, len); + g_free(data); + } qtest_send_prefix(chr); qtest_send(chr, "OK\n"); |