Xcode 16 beta 5 compatibility

.gitignore

@@ -59,4 +59,8 @@ DerivedData
 
 # Test output
 report.llcov
-report.json
+report.json
+
+# VSCode
+.vscode
+.rdbgrc*

lib/slather/project.rb

@@ -132,21 +132,26 @@ def profdata_coverage_files
 
     def pathnames_per_binary(binary_path)
       coverage_json_string = llvm_cov_export_output(binary_path)
-      coverage_json = JSON.parse(coverage_json_string)
-      coverage_json["data"].reduce([]) do |result, chunk|
-        result.concat(chunk["files"].map do |file|
-          filename = file["filename"]
-          path = Pathname(filename)
-          # Don't crash if the file doesn't exist on disk.
-          # This may happen for autogenerated files that have been deleted.
-          filename = path.exist? ? path.realpath : filename
-          {"filename" => filename, "segments" => file["segments"]}
-        end)
+      if coverage_json_string.strip != ""
+        # JSON.parse will crash on an empty string, so just skip everything if the string is empty.
+        coverage_json = JSON.parse(coverage_json_string)
+        coverage_json["data"].reduce([]) do |result, chunk|
+          result.concat(chunk["files"].map do |file|
+            filename = file["filename"]
+            path = Pathname(filename)
+            # Don't crash if the file doesn't exist on disk.
+            # This may happen for autogenerated files that have been deleted.
+            filename = path.exist? ? path.realpath : filename
+            {"filename" => filename, "segments" => file["segments"]}
+          end)
+        end
       end
     end
     private :pathnames_per_binary
 
     def create_coverage_files_for_binary(binary_path, pathnames_per_binary)
+      return [] unless pathnames_per_binary != nil
+
       coverage_files = []
 
       begin
@@ -482,7 +487,16 @@ def decimal_f decimal_arg
     def find_binary_file_in_bundle(bundle_file)
       if File.directory? bundle_file
         bundle_file_noext = File.basename(bundle_file, File.extname(bundle_file))
-        Dir["#{bundle_file}/**/#{bundle_file_noext}"].first
+
+        # Search for .debug.dylib binaries
+        # See https://developer.apple.com/documentation/xcode/build-settings-reference#Enable-Debug-Dylib-Support for details
+        debug_dylib_matches = Dir["#{bundle_file}/**/#{bundle_file_noext}.debug.dylib"]
+
+        if debug_dylib_matches.length() > 0
+          debug_dylib_matches.first
+        else
+          Dir["#{bundle_file}/**/#{bundle_file_noext}"].first
+        end
       else
         bundle_file
       end