From 1423c33fb8cef4fbc2ca140bbb0411a9491f948d Mon Sep 17 00:00:00 2001 From: Hassan Raza Date: Fri, 28 Aug 2026 14:33:16 +0500 Subject: [PATCH] Fix alpha mask leak when growing the font canvas --- kitty/fonts.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kitty/fonts.c b/kitty/fonts.c index 1df0c55d8..63976b0a8 100644 --- a/kitty/fonts.c +++ b/kitty/fonts.c @@ -193,6 +193,7 @@ ensure_canvas_can_fit(FontGroup *fg, unsigned cells, unsigned scale) { #undef cs size_in_bytes = (sizeof(fg->canvas.alpha_mask[0]) * SUPERSAMPLE_FACTOR * SUPERSAMPLE_FACTOR * 2 * fg->fcm.cell_width * fg->fcm.cell_height * scale * scale); if (size_in_bytes > fg->canvas.alpha_mask_sz_in_bytes) { + free(fg->canvas.alpha_mask); fg->canvas.alpha_mask_sz_in_bytes = size_in_bytes; fg->canvas.alpha_mask = malloc(fg->canvas.alpha_mask_sz_in_bytes); if (!fg->canvas.alpha_mask) fatal("Out of memory allocating canvas");