[PATCH v2 01/20] hw/core/loader.c: Fix type conflict of GLib function pointers

Kohei Tokunaga posted 20 patches 6 months, 3 weeks ago
There is a newer version of this series
[PATCH v2 01/20] hw/core/loader.c: Fix type conflict of GLib function pointers
Posted by Kohei Tokunaga 6 months, 3 weeks ago
On Emscripten, function pointer casts can result in runtime failures due to
strict function signature checks. This affects the use of g_list_sort and
g_slist_sort, which internally perform function pointer casts that are not
supported by Emscripten. To avoid these issues, g_list_sort_with_data and
g_slist_sort_with_data should be used instead, as they do not rely on
function pointer casting.

Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
---
 hw/core/loader.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

V2:
- Updated the commit message to explicitly explain that function pointer
  casts are performed internally by GLib.

diff --git a/hw/core/loader.c b/hw/core/loader.c
index 2e35f0aa90..93a8b45d28 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -1410,7 +1410,7 @@ typedef struct RomSec {
  * work, but this way saves a little work later by avoiding
  * dealing with "gaps" of 0 length.
  */
-static gint sort_secs(gconstpointer a, gconstpointer b)
+static gint sort_secs(gconstpointer a, gconstpointer b, gpointer d)
 {
     RomSec *ra = (RomSec *) a;
     RomSec *rb = (RomSec *) b;
@@ -1463,7 +1463,7 @@ RomGap rom_find_largest_gap_between(hwaddr base, size_t size)
     /* sentinel */
     secs = add_romsec_to_list(secs, base + size, 1);
 
-    secs = g_list_sort(secs, sort_secs);
+    secs = g_list_sort_with_data(secs, sort_secs, NULL);
 
     for (it = g_list_first(secs); it; it = g_list_next(it)) {
         cand = (RomSec *) it->data;
-- 
2.25.1
Re: [PATCH v2 01/20] hw/core/loader.c: Fix type conflict of GLib function pointers
Posted by Philippe Mathieu-Daudé 6 months, 3 weeks ago
On 22/4/25 07:27, Kohei Tokunaga wrote:
> On Emscripten, function pointer casts can result in runtime failures due to
> strict function signature checks. This affects the use of g_list_sort and
> g_slist_sort, which internally perform function pointer casts that are not
> supported by Emscripten. To avoid these issues, g_list_sort_with_data and
> g_slist_sort_with_data should be used instead, as they do not rely on
> function pointer casting.
> 
> Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
> ---
>   hw/core/loader.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>