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chardev/baum: Use definitions to avoid dynamic stack allocation 

We know 'x * y' will be at most 'X_MAX * Y_MAX' (which is not
a big value, it is actually 84). Instead of having the compiler
use variable-length array, declare an array able to hold the
maximum 'x * y'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220819153931.3147384-3-peter.maydell@linaro.org
master
Philippe Mathieu-Daudé 2022-08-19 16:39:22 +01:00 committed by Peter Maydell
parent f63a6e381c
commit 1e3acd3357
1 changed files with 4 additions and 4 deletions
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8
chardev/baum.c
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@ -383,9 +383,9 @@ static int baum_eat_packet(BaumChardev *baum, const uint8_t *buf, int len)
switch (req) {
case BAUM_REQ_DisplayData:
{
uint8_t cells[baum->x * baum->y], c;
uint8_t text[baum->x * baum->y];
uint8_t zero[baum->x * baum->y];
uint8_t cells[X_MAX * Y_MAX], c;
uint8_t text[X_MAX * Y_MAX];
uint8_t zero[X_MAX * Y_MAX];
int cursor = BRLAPI_CURSOR_OFF;
int i;
@ -408,7 +408,7 @@ static int baum_eat_packet(BaumChardev *baum, const uint8_t *buf, int len)
}
timer_del(baum->cellCount_timer);
memset(zero, 0, sizeof(zero));
memset(zero, 0, baum->x * baum->y);
brlapi_writeArguments_t wa = {
.displayNumber = BRLAPI_DISPLAY_DEFAULT,