Align command size to fix undefined behavior

Merged rxi#67 Merge branch 'master' of github.com:gaultier/microui
namandixit · Oct 29, 2024 · 7698cda · 7698cda
2 parents 98a322b + 654a0b0
commit 7698cda
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/microui.c b/src/microui.c
@@ -425,6 +425,9 @@ void mu_input_text(mu_Context *ctx, const char *text) {
 **============================================================================*/
 
 mu_Command* mu_push_command(mu_Context *ctx, int type, int size) {
+  // Need to pad to the next multiple of 8 to respect alignment requirements.
+  size = (size+7) & -8;
+
   mu_Command *cmd = (mu_Command*) (ctx->command_list.items + ctx->command_list.idx);
   expect(ctx->command_list.idx + size < MU_COMMANDLIST_SIZE);
   cmd->base.type = type;