diff mbox series

[v2,03/11] chardev/baum: Avoid dynamic stack allocation

Message ID 20220819153931.3147384-4-peter.maydell@linaro.org
State Superseded
Headers show
Series misc: Remove variable-length arrays on the stack | expand

Commit Message

Peter Maydell Aug. 19, 2022, 3:39 p.m. UTC 
From: Philippe Mathieu-Daudé <philmd@redhat.com>

Use autofree heap allocation instead of variable-length
array on the stack.

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>
---
 chardev/baum.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Richard Henderson Oct. 24, 2022, 11:13 p.m. UTC | #1 
On 8/20/22 01:39, Peter Maydell wrote:
> From: Philippe Mathieu-Daudé<philmd@redhat.com>
> 
> Use autofree heap allocation instead of variable-length
> array on the stack.
> 
> 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>
> ---
>   chardev/baum.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/chardev/baum.c b/chardev/baum.c
index 6a210ffd815..0a0d12661a4 100644
--- a/chardev/baum.c
+++ b/chardev/baum.c
@@ -299,7 +299,8 @@  static void baum_chr_accept_input(struct Chardev *chr)
 static void baum_write_packet(BaumChardev *baum, const uint8_t *buf, int len)
 {
     Chardev *chr = CHARDEV(baum);
-    uint8_t io_buf[1 + 2 * len], *cur = io_buf;
+    g_autofree uint8_t *io_buf = g_malloc(1 + 2 * len);
+    uint8_t *cur = io_buf;
     int room;
     *cur++ = ESC;
     while (len--)