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tests: Avoid calling function with wrong type

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Calling a function with the wrong type is immediate undefined behavior,
even if the ABI says it should be harmless.  UBSAN picks it up
immediately, and any decent control-flow integrity mechanism will as
well.

Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com>
This commit is contained in:
Demi Marie Obenour 2024-08-05 12:49:49 -04:00
parent 4273a5edc8
commit 290c36bc50
3 changed files with 23 additions and 11 deletions
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14
tests/test-compositor.h
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@ -118,5 +118,17 @@ struct client_info *client_create_with_name(struct display *d,
void *data,
const char *name);
#define client_create(d, c, data) client_create_with_name((d), (c), data, (#c))
static inline void noarg_cb(void *data)
{
void (*cb)(void) = data;
cb();
}
static inline struct client_info *client_create_with_name_noarg(struct display *d,
void (*client_main)(void),
const char *name)
{
return client_create_with_name(d, noarg_cb, client_main, name);
}
#define client_create_noarg(d, c) \
client_create_with_name((d), (void(*)(void *)) (c), NULL, (#c))
client_create_with_name_noarg((d), (c), (#c))