On 15/3/22 14:59, Markus Armbruster wrote:
Alex Bennée <alex.bennee@xxxxxxxxxx> writes:
Markus Armbruster <armbru@xxxxxxxxxx> writes:
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
<snip>
diff --git a/semihosting/config.c b/semihosting/config.c
index 137171b717..6d48ec9566 100644
--- a/semihosting/config.c
+++ b/semihosting/config.c
@@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
if (strcmp(name, "arg") == 0) {
s->argc++;
/* one extra element as g_strjoinv() expects NULL-terminated array */
- s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
+ s->argv = g_renew(void *, s->argv, s->argc + 1);
This did indeed break CI because s->argv is an array of *char:
../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
101 | s->argv = g_renew(void *, s->argv, s->argc + 1);
| ^
cc1: all warnings being treated as errors
So it did the job of type checking but failed to build ;-)
You found a hole in my compile testing, thanks!
I got confused about the configuration of my build trees. Catching such
mistakes is what CI is for :)
FYI Alex fixed this here:
https://lore.kernel.org/qemu-devel/20220315121251.2280317-8-alex.bennee@xxxxxxxxxx/
So your series could go on top (modulo the Coverity change).
