Commit f9c31273 for libheif

commit f9c31273232120e842cdb54267fa568dbd78f152
Author: Dirk Farin <dirk.farin@gmail.com>
Date:   Thu Jul 2 12:19:56 2026 +0200

    Check decoded image dimensions in meta-size-0 test (#1857)

    The regression test for a 'meta' box with size 0 only asserted that
    FileLayout::read() succeeded and produced a meta box. Also read the file
    through the high-level API and verify the primary image dimensions
    (33x11). This confirms that resolving the box to the end of the file
    lets the nested 'iprp'/'ispe' metadata parse correctly, not just that
    the outer box boundary was accepted.

    The check uses the 'ispe' dimensions, so it does not require an AV1
    decoder to be available.

diff --git a/tests/file_layout.cc b/tests/file_layout.cc
index 39c48403..afcf6140 100644
--- a/tests/file_layout.cc
+++ b/tests/file_layout.cc
@@ -60,4 +60,14 @@ TEST_CASE("meta box with size 0 (extends to end of file)") {

   REQUIRE(err.error_code == heif_error_Ok);
   REQUIRE(file.get_meta_box() != nullptr);
+
+  // The resolved 'meta' box must yield the correct image metadata. Read the
+  // file through the high-level API and check the primary image dimensions.
+  // These come from the 'ispe' box, so no AV1 decoder is required.
+  heif_context* context = get_context_for_test_file("meta_size_zero.avif");
+  heif_image_handle* handle = get_primary_image_handle(context);
+  REQUIRE(heif_image_handle_get_ispe_width(handle) == 33);
+  REQUIRE(heif_image_handle_get_ispe_height(handle) == 11);
+  heif_image_handle_release(handle);
+  heif_context_free(context);
 }