GIT_SILENT Upgrade ECM and KF5 version requirements for 5.46.0 release.

The GIMP image loader had a limit to 16K x 16K pixels, because this would
already exhaust the 2 GByte address space limit of 32 bit systems.

Remove this limit on 64 bit systems to allow the full 32K x 32K size.

BUG: 391970

Differential Revision: https://phabricator.kde.org/D12557

CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.0)
 project(KImageFormats)
 
 include(FeatureSummary)
-find_package(ECM 5.45.0  NO_MODULE)
+find_package(ECM 5.46.0  NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://projects.kde.org/projects/kdesupport/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 

src/imageformats/xcf.cpp

@@ -713,7 +713,8 @@ bool XCFImageFormat::composeTiles(XCFImage &xcf_image)
 
     // SANITY CHECK: Catch corrupted XCF image file where the width or height
     // of a tile is reported are bogus. See Bug# 234030.
-    if (layer.width > 32767 || layer.height > 32767 || layer.width * layer.height > 16384 * 16384) {
+    if (layer.width > 32767 || layer.height > 32767
+        || (sizeof(void *) == 4 && layer.width * layer.height > 16384 * 16384)) {
         return false;
     }